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ISIS Torque Sensing Bottom Bracket

July 27, 2014 3:02:45 AM PDT

A number of people with modern bikes have been hesitant to add a torque sensing bottom bracket to their ebikes because it meant changing over their cranksets to a square taper model as well.

Torque Sensing BB with ISIS Spindle

Well, at least there is one choice for a splined interface. The company NCTE has produced a torque sensor that has the same electrical specifications as the THUN devices, but which uses an ISIS spindle. We've got a 128mm spindle length model in stock for those with ISIS cranks keen to try it out. 

Posted By Justin Lemire-Elmore

Needless to say we had a pretty fun booth display and demo ebike fleet at the Vancouver Maker Faire last month. Thanks to all who came out to pay a visit and support the creative DIY and maker scene in town.

 

Heading out to Maker Faire by ebike caravan  Ebikes at 2014 Vancouver Maker Faire Departing from 2014 Maker Fair, John with Cargo Trike

This coming weekend is the annual VEVA Electrafest Show, featuring nothing but local electric vehicles, from little DIY e-scooters up to full sized commercial electric cars. We're not going to have a full booth presence, but Justin will certainly be there with the latest version of our weight sensing inline-motor electric longboard, and perhaps some other projects up his sleeve.

If you are in the Vancouverarea and have an ebike or EV project you want to show off, it's free and not too late to register for the show and include your vehicle in the mix! The event is at the Concord Pacific, just by science world, and conveniently not too far from our shop either. 

Posted By Justin Lemire-Elmore

Map of Vancouver Mini Maker Faire Layout


Our commute to Maker Faire this year won’t be nearly as epic as the 1800km journey last spring, but we hope the excitement is just as strong. This year we are proud to be not just an exhibitor but also a sponsor at the Vancouver Mini Maker Faire, happening at the PNE fairegrounds next weekend, June 7 & 8. We’ll have an outdoor “ebike eplayground” in the North West corner of the event and as always look forward to sharing grins with locals.  

Posted By Justin Lemire-Elmore

Spoke Calculator with Paired Holes

May 31, 2014 3:18:00 AM PDT

Enhanced Spoke CalculatorWe’ve finished a significant round of enhancements to our online ebike spoke calculator application to better serve the needs of people lacing hub motor wheels.

  • Dimensionally accurate real time drawing of the motor, rim, and selected lacing pattern, so you have confidence to see that the hub/rim choices are correct
  • Measurement of the spoke angle at the rim to indicate possible stresses at the nipple and threads.
  • Allowance of paired spoke holes. Many large diameter hub motors have spoke holes grouped in two rather than uniformly distributed, but there are few tools out there to help calculate the appropriate length.

 

Check it out. We've added a number of new motor sizes (like the Magic Pie3, Crysatlyte Crown, Heinzmann PRA etc.), and are open to add additional suggestions via the related endless-sphere thread

Posted By Justin Lemire-Elmore

Trip Analyzer for Cycle Analogger Data

May 31, 2014 3:14:00 AM PDT

Also on the web software front, we’re making progress on a web application to take information saved from the Cycle Analogger device and view both your route and energy usage statistics through interactive graphs and maps, all within your browser window.

 Cycle Analyst Analogger Trip Analysis Program

There is still a long way to go to hit all our desired features, but it’s worth having a look now if you’ve got logs of CA and GPS data and have been stumped on how best make use of it. Additional discussion is here

Posted By Justin Lemire-Elmore

Faster Small Parts Shipping through Amazon

May 31, 2014 3:07:00 AM PDT

Amazon Torque Arm Purchase

Shipping small parts from our shop in Canada to American destinations has always been a tad expensive, so we’re experimenting with using Amazon as a fulfillment warehouse better serve US customers. Currently all three of our torque arms are available now, with free shipping for amazon prime subscribers:

And if it works out well we’re start hosting other small Grin Tech items like our ebike lights and DC-DC converters too. 

Posted By Justin Lemire-Elmore

The last few weeks we’ve been in the midst of a full inventory transition with some of our product lines, and we apologize to those who’ve had difficulty getting all their kit parts together. This is all wrapping up and there is good news to speak of for those who have been patient.

Grinfineon Controller: Proportional Regenerative Braking.

All of our motor controllers are now running a newer control chip with a customized firmware for proportional regen. We’ve done this in a way that requires no extra hardware. If you have a V3 Cycle Analyst, the regen control is mapped to the otherwise unused 0.0 to 0.8V throttle signal range, giving you full control of the braking force and regen current through the Cycle Analyst. Without a V3 CA, you can use a regular ebrake lever to activate regen, and then use the throttle to modulate the intensity.

Grinfineon Controller, Full Throttle Sweep showing Regen and Fwds RecgionsProportional Regen Curve with Ebrake and Throttle Modulation

We’ve also improved the LED behavior so that you can tell if the controller is operating in sensored or sensorless modes while running, and tidied up the total connector bundle. At the moment, the 20A and 25A controllers are all available with this firmware. The larger 35A and 40A controllers are still in the midst of firmware testing and revisions, but should be available shortly.

eZee 5 LED Console

The latest shipment of eZee kits also includes a simpler 5-LED console for those who don’t require the full details of a Cycle Analyst. This device has been customized for full compatibility with any controller that has a CA plug, whether from an eZee kit or not, and it includes a DC power plug for running front headlights too.

 eZee LED ebike consoleLED Console Panel

The top row of LEDs show the approximate battery voltage, while the bottom row of LEDs is controlled via the up/down buttons to set the ebike power level via current limiting, much like with a V2 Cycle Analyst.  With the 25A eZee controllers, 1 LED = 5 amps, 2 LEDs = 10 amps, etc.

 

Batteries

18650 Cells in eZee BatteriesAll our recent stock of higher capacity eZee batteries are using Japanese Sony V3 cells as standard. While the Samsungs have worked reliably, their cycle life at higher discharge currents left a little to be desired and we’re hoping the highly regarded Sony cells yield better longevity. 

For those who found 10Ah wasn't quite enough, but 20Ah excessive, we've also got the Allcell batteries stocked in a 48V 13Ah pack with power cells, and in 35V 15Ah with regular energy cells. 

 

Posted By Justin Lemire-Elmore

Cycle Analyst Setup Software

May 16, 2014 4:24:00 AM PDT

Screen Shot of CA3 Setup UtilityWe’ve got our first software releases completed for the V3 Cycle Analyst, allowing you to set, load, and save all of the advanced CA settings through a computer connection, rather than working via the 2 button interface. This makes it easier to share preconfigured setup configurations and restore defaults just as easily. It also provides acess to OEM features such as masking out certain setup menu screens.

Windows and Linux Versions are available to download from our CA3 Information Page.  This requires you are updated to the V3 Prelim6 firmware. 

Posted By Justin Lemire-Elmore

The Right Side Drive (RSD) Stokemonkey Cycle Stoker system has been refined after months of pilot testing, retooled for the new 2014 Edgerunner frames, and is now available as an independent conversion kit

Right Side Drive Stokemonkey Kit Contents

Some of the great features include:

  • V3 CA with built in pedal torque sensing through the clampset, for proportional torque assistance and human power readout
  • Patterson 2 speed crank with custom 39T chainring, both freewheels and provides a 62T equivalent front gear letting you pedal along at high speeds even with the small 20" rear wheel.
  • All cables lengths sized for a perfect fit on both the large and small 2014 Edgerunner frames, with all wires routed on the downtube for a clean install.
  • Works both with rugged internal hubs (like the Nuvinci) and regular derailleur gear systems.

The installation of this kit is a bit more involved than hub motor setups since it requires bottom bracket tools for the Patterson Crankset, but shouldn’t intimidate the mechanically inclined.  At the moment the kit is only sized for the Xtracycle Edgerunner frame, adapting to other bikes could be tricky but we are working next on a Yuba Mundo package.

Edgerunner Bike with RSD Stokemonkey Installed

Those wanting to purchase a complete Edgerunner with the RSD Stokemonkey Cycle Stoker installed can do so from Clever Cycles in Portland, and the G&O Family Cyclery in Seattle.  We also have a limited number of Black and Mocha Edgerunners with the Nuvinci hub available with this freewheeling conversion on our Edgerunner store site

Posted By Justin Lemire-Elmore

Store Kit Performance Preview

April 27, 2014 4:33:00 AM PDT

Among many website improvement tweaks, we’ve added an additional “performance as configured” data at the bottom of each conversion kit checkout page, which updates automatically as you choose different motors, controllers,and wheel size options in the kit builder:

Kit Performance Preview on Store Site

This provides a glimpse of the expected kit performance with both 36V and 48V batteries without having to separately build your setup on the simulator. So you can at a glance see the unloaded speeds along with the motor thrust, and have this update in real time depending on your motor and/or controller choice. 

Posted By Justin Lemire-Elmore

New Item - Dual USB Power Adapter

March 1, 2014 1:50:00 AM PST

 

Well Dual Output USB Power Adapter for ebikesour first real blog post on the new website should interest many people here. After a year in development we're ready to launch a new DC-DC converter series with USB outputs to help accessorize your ebike.  The first of these is a 15 watt Dual converter, which runs off 24V-72V packs and has full 2A and 1A output ports.  These DC-DC adapters will enable you to turn your ebike battery into a rapid charge station for your phone/tablet/gps/bike light or other gadget.  

The power adapters are rugged, waterproof, made in Canada, and easily plug in to a Cycle Analyst's power port or Anderson tap. There is an embedded LED current gauge that shows how many amps are flowing on each USB port so you can be sure when a device is charging or fully charged. And the output is fully isolated from your ebike battery so there is no risk of shock, ground loops, or electrical interference.

The first production batch is in our curing oven and will be available from the DC-DC converter section of our website. 

ebike DC-DC Power Adapter Charging Devices

Posted By Justin Lemire-Elmore

After a few false starts over the past several years we’re finally going live with an updated web layout and back-end for ebikes.ca, ( in case you didn’t notice!)

 

ebikes.ca circa 2008 ebikes.ca homepage circa 2014
... 2004 ... 2008 ... 2014!

 

We hope with this new organization that it is faster and easier to find relevant information from the maze that was our website. Our goal was not to lose any info in the migration, and more importantly make it much easier to keep publishing new and interesting stuff.

The online store site in particular should be more convenient to navigate. You’ll notice that we’ve added a “specifications” tab with key technical details on the different parts. So for instance you can sort the list of hub motors by their motor kV constant, by their rim size, or by their weight, to hone in on the most suitable one for your project. 

Other things to note:

  • Account and Logins: It is now possible to register an account with us so that you don’t need to re-input address and other info each time you need to get something. You can of course checkout as a guest, but with an account you will be able to look at what you got on previous orders, check shipment status and tracking numbers etc.
  • Credit Card Payments: We can take credit card payments directly by secure checkout now without needing a Paypal account or a phone-in of the details.
  • Online Tools: The popular ebike simulator and spoke calculator are in the “tools” tab on the top, and we hope add a few more useful ebike related tools to this list over the course of the year.
  • Kit Bundles: Most of the conversion kits we’ve now made available in two types,  a) a basic option with throttle control and a V2 CA, or b) an  advanced PAS kit with a V3 Cycle Analyst and your choice of torque or PAS sensors for pedalec control. We hope that this simplifies the process of getting comprehensive set of compatible parts for your build.  

While a lot of the written content has been updated and made fresh, there are still some info sections that are still circa. 2006-ish and works in progress. So naturally, we’re working on them. In the meantime please let us know about any issues/glitches by email.  

Posted By Justin Lemire-Elmore

Cheer on An'So, Sat Feb 8th 7:30pm at Rio Theater

February 8, 2014 10:24:06 AM PST

AnSo_monocyclette_volcano (16K)

After giving radio interviews this week on CBC's radio Canada and On the Coast, our Anne-Sophie is gearing up for a full slide-show presentation of her 4600km unicycle journey across south America this Saturday evening at the Rio Theater. It's part of the Vancouver Mountain Film Festival and seats are still available for this and many other tales of adventure if you're looking for something to do on this first-ever family day long weekend.

Some Web Maintenance

Several people have noticed that our website has been occasionally unavailable in the past 24-48 hours. We are making a number of changes to the back-end with some updates resulting in a bit of downtime. So rest assured that everything is OK here and we are looking forwards to having some nice improvements to show for all this work fairly soon.

Posted By Justin Lemire-Elmore

Small Items to Start 2014

January 15, 2014 10:11:00 AM PST

For those who've been waiting, the remaining production batch of 72V capable 40A infineon controllers arrived last week and is in great supply. We hope everyone had a good holiday and have just a few small things to mention to start the year:

More PAS Sensor Mount Options

Magnets_On_Chainring (21K)
PAS12_Chainring (13K)

The split-disk PAS magnet rings have been a great convenience for those installing pedal assist systems on DIY ebikes without needing to take the crank off, but they only work with square taper bottom bracket spindles. For those with external bearing bottom brackets using ISIS or other splined standard, we now have a magnet ring option from King Meter that attaches directly to your small chainring instead. This works with 64mm 4-bolt and 74mm 5 bolt inner spiders, and comes with the universal CA3 compatible PAS pickup.

 

LED Rear Lights

We're now making the popular 8LED rear ebike lights available preterminated with a DC power jack, so that they are plug-and-play compatible with our Anderson Powerpole Tap. This makes wiring up your rear lights almost as easy as the front lights (which just plug into the Cycle Analyst). We will continue to offer the non-terminated version for those who want their lights hard-wired and/or who want to take advantage of the 3rd signal wire to control the flash mode.

8LED_Lights_Compared_TN (20K) 8LED_With_Tap (19K)

Stokemonkey Install Tools

This isn't much, but we have both crank puller and chain breaker tools available for those installing a Stokemonkey drive on their cargo bike. We'll soon have large gear pullers for opening hub motors, and some other ebike specific repair and install hardware available.

Tidy Wiring Kit

Wiring_Tidy_Kit (20K)

There are a few tricks to making a DIY ebike looks as neat and professional as a turn-key ebike, and most of them center around wire and cable management. With proper use of spiral wrap (to bundle cables together), Velcro sleeves (to cover and protect connectors), and zip ties to secure it all to the frame, you can turn a rats nest frankenproject into a pretty clean machine. We've put together a 'WireRouteKit' to help people straighten their mess.

These items are listed on the Wiring Accessories section of our store site, and we will have them listed with the conversion kits shortly.

Posted By Justin Lemire-Elmore

We're currently running the first small-scale production run of EdgeRunner cargo bikes featuring a freewheeling right side drive Stokemonkey setup (Renamed Cycle Stoker in 2014and are open to sales to early adopters. Priority will be to customers local in BC, although keen technically minded folks elsewhere are free to apply too.

This bike has all the benefits of the original Stokemonkey for cargo and passenger hauling, with the further bonuses of:

  • 1) Integrated torque sensing proportional pedal assist, via strain sensors and a V3 Cycle Analyst
  • 2) Single right side chain with freewheeling crankset, so the motor can run independent of the pedals.

Combined with the Nuvini CVT hub on the back, the result is a seamless mid-drive system that can change gears on the fly and under load. The introductory price of the complete bike without battery is $3295, with any of the 36V and 48V battery options being well suitable.

Posted By Justin Lemire-Elmore

Missing Prototype Edgerunner

December 17, 2013 10:28:59 PM PST

On a related note, our development platform Edgerunner bike got stolen a few weeks ago from downtown Vancouver. Portable angle grinders, what can ya do. So if any folks see this blue cargo bikearound town, notable for the wooden deck (most others would have the black FlightDecks), then let us know.
Posted By Justin Lemire-Elmore

Battery Rails for EdgeRunners and Big Dummy Bikes

December 16, 2013 10:28:05 PM PST

The Twist Battery Rail we made for the electric EdgeRunner bikes has been updated to work both with the original ER frames, the new 2014 frames, and the Big Dummy frames as well. With this rail you can fit the flat eZee battery on the seatstays and for a tidy look under the deck, and we're making them available as a stand alone item on our site.

Posted By Justin Lemire-Elmore

No Love for Mocha? 20% Clearance Sale

December 15, 2013 10:26:00 PM PST

We sold out of the original eZee hub motor EdgeRunner bikes some time ago with the exception of the Mocha colour of which there are 4 remaining. The geared hub motor option is simple with plenty of torque, but we need the floor space and are offering a special on these last Mocha coloured ebikes at 20% off.

Posted By Justin Lemire-Elmore

Cycle Analyst V3 Adapter Module

December 14, 2013 10:25:07 PM PST

Want to integrate all the advanced V3 Cycle Analyst features with an older controller that only has a V2 CA style plug? We're now making a simple CA V3 Adapter Module that splits out the 6-pin CA3 plug into separate throttle, ebrake and CA connectors. This not only enables the Cycle Analyst to run your throttle directly, it also allows the CA control regenerative braking whenever the CA's throttle output drops below 0.5V.

Posted By Justin Lemire-Elmore

Last Day to Not Buy Nothing

December 14, 2013 10:23:55 PM PST

The 15% discount on GRIN products for people who didn't go out shopping on Black Friday is still going until the end of this weekend, right up until we get to the shop on Monday morning.

Posted By Justin Lemire-Elmore

New TDCM Torque Sensor for V3 Cycle Analyst

November 28, 2013 10:19:51 PM PST

Those after torque proportional pedal assist systems now have a new plug-and-play option available. The bottom bracket sensor from TDCM uses novel geometry to measure the backwards chain force on the cranks rather than the spindle torque in order to sense your pedaling force.

 

 

TDCM_Bracket (8K) TDCM_Forces (8K)

This enables it to sense both the left and right pedal effort, giving a more immediately responsive PAS system at a much lower cost than magnetostrictive torque sensors. On the other hand, it is not as accurate at measuring human watts as the THUN sensor, and the installation is a bit more complicated as well.

We have the TDCM units custom made to run directly off the 5-pin V3 Cycle Analyst plug just like the THUN sensors, and have these new pedal sensor options available in the CA Parts page in 114120, and 128mm spindle lengths. The TDCM is a better option if the main goal is proportional pedalec assist, while the THUN unit is best if accurate human power output is needed, or if the chainline is not perpendicular to the legs (e.g. recumbent bikes)

Posted By Justin Lemire-Elmore

20Ah AllCell Batteries

November 28, 2013 10:14:59 PM PST

We have been working for some time with AllCell to produce a custom frame-bag mounted battery pack using their unique PCM material both as a structural support for the cells, and as a means to keep the pack temperature under check. This is still progressing, surely, but in the meantime we're happy to offer their standard rectangular 36V 20Ah and 48V 20Ah batteries as an option for all of our kits. With a full 20Ah in the tank, these offer a nice high capacity choice for cases where the 10 and 14Ah eZee packs won't go the distance.

While these packs don't have a rigid enclosure or mounting hardware, they can fit inside regular trunk bags OK and offer a great long range battery choice with USA warranty and support.

And while we were skeptical of the claimed benefits of the PCM material, there is no doubt in our testing that it does effectively keep the pack temperature rise clamped at about 40 degrees Celcius. The graphs below show a direct comparison of the eZee flat pack and an Allcell pack we had assembled in the same geometry, under a steady high current (28A) discharge test.

Posted By Justin Lemire-Elmore

Buy Nothing Discount

November 28, 2013 10:12:27 PM PST

To everyone who didn't go bargain hunting and online shopping this Black Friday / Cyber Monday, and honoured buy nothing day instead, we respect that. We're offering you a 15% discount on all locally Grin manufactured items, which includes Torque Arms, ebike Lights, Cycle Analysts, Stokemonkey kits, Battery Rails, and DC-DC converters. Just indicate during the checkout that for whatever reason don't indulge in any consumer shopping over the long weekend, and we'll apply the appropriate discount. This will be valid until Dec 15th.

Posted By Justin Lemire-Elmore

USB Programming Cable Standard with V3 CA's

November 19, 2013 10:01:00 PM PST

 

The FTDI USB->TTL cables we'd been offering for programming the Cycle Analyst have been superbly reliable, but also a bit pricey. So we designed our own USB communication circuit based on the same chip family, and made them with an extra long (3m) cable so that it's easier to reach from your computer/laptop to the CA on your bike for reflashing. And as a plus, they now come included as standard with each V3 Cycle Analyst device.

Posted By Justin Lemire-Elmore
All of the 20,25, 35, and 40A controllers are in stock and have the same universal sensored/sensorless behaviour with automatic hall mapping and dual levels of regen. The controller store page info has been updated with complete details of the new specifications.
 
We also have some miniature 15A controllers suitable for the small geared Tongxin/Outrider hubs, and are releasing a set of kit packages based around these motors and controllers in a new 'mini geared kits' section of the store site. Next in the works on this front are narrow 80mm wide motors with roller gears for folding bicycles.
Posted By Justin Lemire-Elmore

Crown Motors and 24" Kits

November 19, 2013 10:01:00 PM PST

 
We have a few additions on the Crystalyte motor front. The popular H3540 and H3548 we have now available unlaced for those planning to do custom wheel builds. This also reduces the shipping cost substantially for orders going overseas. And the powerful Crown motors are in stock again, including in a 24" rim size which plays nice with fat tire bikes.
Posted By Justin Lemire-Elmore

eZee Kits: Black, Stronger Gears, Higher Efficiency...

November 19, 2013 10:01:00 PM PST

There have been a few updates to note in our line of eZee conversion kits.
 
Better Gears: After dealing with occasional random failures of the injection molded nylon gears in the eZee motors, these are now all being machined from a higher grade of gear stock. Depending on the batch we would sometimes see upwards of 2-3% failure rates on the molded gears, while so far there hasn't been a single tooth failure on the machined units. 
 
 
 
 

Thinner Laminations: Another update was made to the motor core itself. Instead of using 0.5mm thick laminations, they are now produced with thin 0.35mm material. This results in lower eddie current losses, lower unloaded currents (~1.8A vs. 3.2A) better efficiency (82% vs. 78%), and less motor heating. The simulator has been updated to reflect the new performance. 
 



 

Black: The rear motors are now all powdercoated black as standard. The front hubs are still a machined aluminum finish.
Posted By Justin Lemire-Elmore

November 2013, Holy Stockage

November 19, 2013 10:01:00 PM PST

After some supply difficulties at the end of fall we're now in a rare space of having almost everything we offer on hand and ready to ship. From Crystalyte HS and Crown motors, to front and rear eZee kits, to a whole new updated controller supply. We finished building a custom enclosure for our CNC machine and it is busy churning out battery rails and related hardware.
 
Posted By Justin Lemire-Elmore

New Items

November 12, 2013 10:01:59 PM PST

Every few months there are a few new items that have made it through the long journey from idea to production and are ready for announcement:
 
The Stand Alone Anderson Powertap
 
 
We are now offering a stand-alone version of the Anderson Powerpole tap that used to be a termination option for our LED lights. This handy cable plugs inline between your battery and controller and brings out a fused link to the battery voltage for running lights, DC-DC converters, audio amps, or what have you.
 
Cycle Analyst Security Screws
 
   
Some people have expressed concern about the Cycle Analyst or Lumenator lights getting stolen from their handlebars. Although we haven't heard many instances of this happening, we've sourced a set of security screws that can replace the Allen and Hand Turn bolts on the bracket so that these can't easily be undone.
 
Mini Geared Motor Kits

   
After a successful testing phase we're now offering for general sale a small geared hub motor for those for whom the powerful eZee kits are overkill. We settled on a 2.4 kg motor from Outrider, and have it stocked unlaced in both a standard (7.8 RPM/V) and fast (10.8 RPM/V) winding. These motors are available independently, or as part of an unlaced kit with 20A controller, CA, and spoke set.
 
Rolling Jackass Stand
 
 
Those who ride cargo bikes very quickly appreciate the value of a rugged centerstand for holding the bike stable while loading and unloading. The Rolling Jackass, invented by Val Kleitz and manufactured in Seattle by Haulin Colin, takes the cake for being the best of the best. This clever stand deploys with a handlebar lever so you can stabilize without getting of the bike, and fits the Edgerunner bikes just perfectly. We picked one up from Colin while riding down the coast and were so pleased that we had to stock them.
 
Dual Sensored/Sensorless Infineons, with Dual Levels of Regen Too
 
Our stock of 20, 25, and 40A Infineon Controllers has now been updated to run in both sensored AND sensorless configurations. So if the hall cable is not connected, they will automatically engage in a self starting sensorless mode, and if the halls are later plugged in the controller will automatically map the hall table and run sensored so that you don't have to play around with hall/phase pinout combinations.
 
As well, we now have them made with two levels of regen intensity to accommodate those who want maximum stopping power, as well as those who want regen current but want to keep it low to prevent damage to the battery or tripping a BMS circuit. There is an extra wire loop that can be snipped to double the electrical braking force if desired.
 
THUN Sensor
 
After a long backorder wait time the THUN torque sensing bottom brackets are available again. Unfortunately the costs on these went up substantially on this order so all the pricing has increased somewhat, but combined with a CA3 this is still the least expensive package for accurately measuring your direct human power output. Not to mention having proportional pedal assistance and everything else.
 
Crown Motors on Simulator
 
In addition to the small geared Outrider motors, we also have the Crystalyte Crown TC-80 and TC-100 motors fully modeled and put on our simulator. There are only a handful of Crown motors left so if you've been eyeing one of these for a summer build it would be good to get onboard soon. Our next shipment won't be until late September
Posted By Justin Lemire-Elmore

End of Summer Sundries

September 12, 2013 10:01:59 PM PDT

Thanks to all those who turned up and packed the Hub Community Bike Shop in Nanaimo for the intro workshop on ebike conversions. We were happy to see so many in the community keen about electric assist, and hopefully you learned a thing or two as well.
   
We also had a good time at the 2013 REV electric vehicle show, and want to thank VEVA for promoting this technology year after year and providing this platform. And it was nice to see the annual kWhr ebike ride and BBQ happen once again at Jericho beach. Some traditions are timeless.
     

Finally, Anne-Sophie successfully made it to Santiago, Chile, concluding her 4600 km solo unicycle ride up South America with only a few bumps and bruises. We've been happy to have her back and overseeing the active unicycle corner of our shop and many other behind the scenes operations.

Posted By Justin Lemire-Elmore
Through a partnership with King Meter, we've produced a modified version of their Pedal Assist Sensor (PAS) device to better integrate with the V3 Cycle Analyst. This device now has TWO quadrature output signals just like the THUN sensor, rather than a single output that responds in one direction only. This enables you to choose between installing on the left or right of the bottom bracket, and then indicate the forwards direction with the CA.
 
The input voltage range was increased to work from 5 up to 12V, so that it can run from the same CA connector designed for 12V THUN torque sensing bottom brackets, or normal 5V PAS sensors. As well, it still uses the split ring magnet sensor which can install without removing your cranks, and the sensor pickup is on a pivot assembly so that you can position it near the magnets regardless of frame geometry. All told, this is universal and easy to install PAS system for conversion kits that we've always wanted.
Posted By Justin Lemire-Elmore

We've managed a work-around strategy for dealing with controller mosfets and now have the 25A and 30A controllers in stock again, and the 20 and 40A coming shortly. All of our controllers now work both sensored and sensorless, and have a jumper cable to select between two levels of regen intensity depending on what you or your batteries want. Not only that, they will automatically map the hall sensors so that there is no need to mess around via trial and error to figure out the correct pinout with a given motor. The full details will soon be explained on the controller store page.

Posted By Justin Lemire-Elmore

The Stokemonkey Classic is Available Again

September 12, 2013 10:01:59 PM PDT

With all the hardware on hand, we're pleased to offer a re-release of the classic left-side-drive Stokemonkey system for cargo bikes. For all you Big Dummy, Xtracycle, Edgerunner, and Yuba riders who've been emailing for updates, well it has finally come. Full details are on the Stokemonkey Page.
 
The mounting hardware for the freewheeling right side drive Stokemonkey is still going through design refinements, and we don't expect this to be in production until December.
Posted By Justin Lemire-Elmore

The Battery Bootie

September 12, 2013 10:01:59 PM PDT

We believe that every piece of gear on an electric bicycle should handle the rain. In practice, that hasn't always been the case, and we've seen a few expensive eZee lithium batteries meet an early demise from water saturation corroding the BMS ciruit and leading to cell self-discharge. So it's been fun to partner with Feathercraft, a local collapsible kayak company that knows a think or two about waterproof fabric, to make a cover. The Battery Bootie has a velcro flap for key access, and can still allow the battery to slide on and off both the eZee rear racks and our CNC Twist Rail products.
Posted By Justin Lemire-Elmore

Adam's Basic Intro to Ebikes Guide

August 12, 2013 10:01:59 PM PDT

One final project that Adam finished just before his departure is a cute but thorough introductory guide to ebike conversions. Our website generally assumes some level of technical background or previous familiarity with electric bicycle hardware, so this guide offers a non-intimedating way to get acquainted with the very basics. We hope that people appreciate this nice parting gift from Adam.

Posted By Justin Lemire-Elmore

Labour Day Week Closure, Sep 2nd - Sept 8th

August 12, 2013 10:01:59 PM PDT

In part because of the stock situation, we've decided this will be a good time to do some serious renovation work at the shop, starting this coming labour day long weekend until Sept 8th. During this time both the online and physical stores will be closed, and our phone line may be disconnected. We will try our best to handle any urgent issues over email, and thank you in advance for your patience.

Posted By Justin Lemire-Elmore

Controller Out of Stockage

August 12, 2013 10:01:59 PM PDT

As a result of supply shortages and customs difficulties with performance mosfets, our summer production batch of infineon motor controllers was unfortunately set back by almost 2 months. That leaves us now out of stock on all the controller models, and until the new batch arrives sometime in September we won't be able to supply Nine Continent or Crystalyte conversion kits either. Sorry about that. We're also only down to only front 26" eZee kits, and front Crystalyte kits. New sea shipments from both eZee and Crystalyte are expected in late Sept / early Oct.

Posted By Justin Lemire-Elmore

Stokemonkey Status

August 12, 2013 10:01:00 PM PDT

We promise this will be the last Stokemonkey update until we actually announce universal availability,,, the last 10% always takes the longest time. BUT, for those who have been waiting patiently the news is good. Our updated bracket design works with the right side freewheeling drives as well as the classic stokemonkey configuration for driving the cranks. And, for those classic style stokemonkey builds, we’ve produced an updated clampset that fits tubes from 3/4" up to 1.75" in diameter, accommodating a wider range of frame types without shims or adapters.




 
Both are in their final stages of volume production and should be ready in early September.
Posted By Justin Lemire-Elmore

Clearance Items

July 12, 2013 10:01:59 PM PDT

There is still some good new stock on our clearance shelves for those doing bargain builds:

Crystalyte Sensorless 40A and 25A controllers - 50% Off
 
Now that we have our standard Infineon controllers working both sensored and sensorless, there is little need for the Crystalyte sensorless only controllers anymore and we are liquidating our remaining stock of these at half price. For someone with a direct drive hub motor setup with damaged or no halls, this is a great deal.
 
Slow Winding 20" Front Hub Motors - $95
 
There was an inadvertent mixup that had us with a large number of 20" front hub motor wheels that don't fit with our existing lineup too well and are on a firesale to clear space. These are a 10 turn winding motors with a power and speed similar to the Crysatlyte 409 motor. Great deal for projects can use a lower KV motor in a 20" rim.
 
All 9C Hubs and Kits
 
And finally, we are continuing with our sale of Nine Continent direct drive motors and kits. All the 20" units are out of stock, but we have the 26" and 700c in various front and rear, 2806, 2807, and 2808 windings still available.
Posted By Justin Lemire-Elmore
Then the following weekend is Electra Fest event hosted by the Vancouver Electric Vehicle Association. This is an open show for people to showcase their electric vehicles, large and small, from cars and trucks to skateboards and boats. It's a great way to spend a Saturday afternoon checking out what the local EV scene is up to, and we'll be there with our own wacky collection of stuff to ride.
Posted By Justin Lemire-Elmore
This coming Friday is the annual summer BBQ for the Kilowatt-Hour ebike ride. It also happens to be Adam's last day on the job before heading to the vibrant city of Montreal, and will be our sending off farewell party too. The ride starts from the Central Library at 6pm and will meander to Locarno Beach for cooking festivities.
 
There is usually an awesome turnout of ebike enthusiasts from all over Vancouver who come out for this summer ride, so if you fancy a Friday evening picnic on the beach then prepare some edible treats and meet up at the library.
Posted By Justin Lemire-Elmore

Then on Wednesday evening Justin and Robbie will be travelling to Hub City Cycles in Nanaimo to give an introductory workshop on electric bicycle conversions. This could be fun for islanders who are curious about what's involved in retrofitting a bicycle, or who have a bunch of burning questions for two aficionados. Details and address are on the Hub City website. 

Posted By Justin Lemire-Elmore

Ebike Survey

May 13, 2013 1:53:00 AM PDT

We're hoping it's not too late, but a research team at the Portland State University is doing an widespread survey of electric bike users in the USA, but they said Canadians are welcome to participate too. So if you have 10 minutes to spare and want to share your experience with electrics, fill it out here.

Posted By Justin Lemire-Elmore

9 Continent Motor and Kit Sale

May 13, 2013 1:53:00 AM PDT

We have all of our Nine Continent motors and related kits marked down in order to free up some precious shelf space. These are good value direct drive hub motors, but going forwards we are planning to stock just the higher-end Crystalyte and eZee motors and are clearing out the 9C for that reason. If you were considering a budget kit and don't require proper disk brake compatibility, this could be your chance to get a bargain.

Posted By Justin Lemire-Elmore

Split PAS sensors for CA3

May 13, 2013 1:53:00 AM PDT

We have a new supply of 12 pole PAS sensors for the V3 CA devices. These units have a split magnet disk and adjustable position pickup so there is no need to remove your cranks or bottom bracket to install them on a bike, and have been wired up for plug and play compatibility with the CA3 harness.

Posted By Justin Lemire-Elmore

2013 Crystalyte Details

May 13, 2013 1:53:00 AM PDT

The first 2013 Crystalyte shipment was unloaded last week and contains some updated parts worth mentioning:
 
 
Crown Motors
 
First are the new Crown motors, which use an intriguing side plate design with straight pull spokes and a wider/deeper motor stator that delivers plenty of power without the weight penalty of the large 54XX wheels. We have these in stocked in 26" downhill rims in two different winding options, however the exact performance modeling on the simulator will not be complete until June.
 
 
 
 
 
 
 
Single Sided Hubs
 
We are also bringing back the single sided stub axle motors for those doing custom trike, quad, or trailer EV's where you want to grab the motor from just one end. In the past we had these with the now obsolete 400 series hubs, and have gotten a similar variant made of the larger HS motors, with a custom axle made up that is 17mm diameter and 90mm long.
 
 
 
 
 
 
 
 
 
Thermistors in Crystalyte
 
All of these Crystalyte hub motors now have a built in 10K NTC thermstor, enabling you to monitor motor temperature with the CA3 providing a safety roll back. This allows you to get the most short term power from the hub without risk of overheating from prolonged use.
 
Posted By Justin Lemire-Elmore

Arrival in SF

May 13, 2013 1:53:00 AM PDT

1800km later Justin and Robbie have completed their electric cargo bike ride from Vancouver into San Francisco and had a fabulous time meeting up with everyone at the San Mateo Maker Faire over the weekend. All prototype gear under test held up to the task. A big thanks to Frank, Ken, Will, Wake, Otmar, Pete, Bill, Michael, Eric, Patrick, and the many others who took them in and helped along the way make this a trip to remember.

Posted By Justin Lemire-Elmore

We are registered as "EV Grins" at the Bay Area maker faire, May 18-19th. As part of this we're trying to encourage a small gathering of DIY ebike builders who can make it to participate and show up with their home-brew ebike build. In addition to the custom Edgerunner builds we'll be riding down, we've also got a weight activated power skateboard and a continuously variable geared electric assist unicycle.

Posted By Justin Lemire-Elmore

Stokemonkey Further Update

April 13, 2013 1:53:00 AM PDT

The bikes that we are riding down are equipped with all kind of projects that we've been developing: from weight optimized direct drive thru-axle hub motors to programmable 95% efficient universal chargers, to field oriented sine wave motor controllers. And one item that we're really keen to put through its paces is the 2nd generation right side drive Stokemonkey.
We had anticipated releasing the new Stokemonkey earlier this year, but as we worked on it we noticed an opportunity to include an integrated torque sensing capability as well. This redesign enables proportional pedal assist modes and human power readouts without the need for a special THUN bottom bracket, and will hopefully be worth the wait.
Posted By Justin Lemire-Elmore

Tour of Cascadia, Vancouver to Maker Faire, SF

April 13, 2013 1:53:00 AM PDT

On the subject of tours, both Justin and Robbie are preparing to ride a pair of electric Edgerunner cargo bikes down to San Francisco during the first 2 weeks of May. Along the way we'll be meeting up with a number of ebike enthusiasts and businesses dotting the west coast. The trip will be detailed in this endless-sphere thread, and if you are en-route and want to be a part of the adventure or offer up some shelter and charging outlets, then drop us a line.

Posted By Justin Lemire-Elmore

An'So On a Roll

April 13, 2013 1:53:00 AM PDT

 
         

For those who haven't been following, our intrepid Anne-Sophie has successfully covered thousands of kilometers through Chile and Argentina on her handmade touring unicycle. Other than a few crashes and rough patches, the trip has been a delight of amazing sights and experiences, rendered more interesting by the many locals and friendly travelers on similar journeys.

Posted By Justin Lemire-Elmore

Visits and Helps

April 4, 2013 1:53:00 AM PDT

 

Just a short shout-out to some people who have helped us recently. Thank you to Eliza, a former engineering physics classmate who just finished a 2 month stint here in between her outdoors ed program. And thanks also to Abraham of Glow Worm Cycles in Australia, who came to visit for a week in April and helped us restore our cargo trike back to life.

Posted By Justin Lemire-Elmore

Battery Rail Photos

April 4, 2013 1:53:00 AM PDT

     
People have been making clever use of our in-house CNC'd twist battery anchor rails to secure their eZee batteries in ways that otherwise weren't very practical, such as this in-frame mount by Ross in Delta BC.
Posted By Justin Lemire-Elmore

The Science of Motor Heating

April 4, 2013 1:53:00 AM PDT

     
Of interest to those who are pushing the nominal power ratings on their hub motors, we started a set of experiments last month to understand and quantify the heat buildup and thermal dissipation properties of hub motors and the effects of different cooling strategies. Things were just getting interesting when we had to pause for trip preparation, but we plan to resume the experiments and get a wider set of results in June.
Posted By Justin Lemire-Elmore

Stock Arrivals, eZee and Crystalyte

April 4, 2013 1:53:00 AM PDT

We just unloaded a large shipment from eZee that replenishes all the front and rear eZee kits, in addition to the spare 144 hole hubs. The motors in this shipment were all made with thinner steel laminations, with a measurable improvement in efficiency over the first release of their V2 hub, and almost a 50% reduction in the no-load motor current.
 
Our next Crystalyte shipment has unfortunately faced months of setbacks, but is now scheduled to arrive around May 15th. Two things to note: first we've decided to completely replace the larger 5403 motor with the new "Crown" hub, which should offer comparable power levels but with less weight and standard 135mm axle spacing. Secondly, all of these motors will now include a built in thermistor, so that anyone can monitor and limit their motor temperature easily with a V3 Cycle Analyst.
Posted By Justin Lemire-Elmore

Headset Mount CA Bracket Option

April 4, 2013 1:53:00 AM PDT

 
   

We've also got a new mounting option available for the Cycle Analyst that attaches directly to the steer tube of a 1 1/8" bicycle. So for those with threadless headsets on their bikes this can provide a clean, centered, and theft-proof attachment point.

Posted By Justin Lemire-Elmore

3 Position Mode Switches

April 3, 2013 9:53:00 PM PDT

We're now making a 3-speed handlebar switch preconfigured for the V3 Cycle Analyst with internal resistors to switch between 1.6, 2.5, and 3.3V. This plugs into the Auxiliary input of the CA, and can be configured for low, medium, and high power modes, or it can be set up to automatically change between any preconfigured mode presets. It's a super handy way to quickly customize your ebike's behavior.
   
Posted By Justin Lemire-Elmore
The latest update to the Version3 Cycle Analyst firmware includes a lot of additional functionality, with auto-cruise control, enhanced PAS modes, remote preset mode selection, more intuitive display screens and some bug fixes too. We expect this to be the last 'Beta' firmware and plan to make the official V3.00 release code in the coming weeks.
Posted By Justin Lemire-Elmore

Speaking of Cargo

February 25, 2013 9:50:54 PM PST

XtraCycle Parts
 

We've now got a range of common Xtracycle accessories on hand for those wanting to more fully deck out their Edgerunner bikes, foot rests and wideloaders and even the front Bread Basket.And while we still have some quantity of eZee hub motor Edgerunners left, we expect them to be out of stock well before the next shipment comes in. So if you are waiting until spring to purchase, be aware that they could be sold out until much later in the summer.

Posted By Justin Lemire-Elmore

On More Than Just Cargo

February 25, 2013 9:50:54 PM PST

eBee_Motor_TN (13K)


And on that note, while the Stokemonkey really shines in assist with cargo bikes, it's not confined to that role. Paul Brodie recently built a sporty suspenion bike using the Stokemonkey motor mounted mid-frame along with a THUN torque sensor for throttle-free control. If you want to see a metal craftsman at work, have a look at the build sequence CycleEXIF website.

 
The completed ebike will be on display at the NAHBS 2013 Handmade Bike Show in Colorado this weekend.
 
Posted By Justin Lemire-Elmore

Stokemonkey Kit Update

February 25, 2013 9:50:54 PM PST

We mentioned the 2nd generation Stokemonkey motor last year thinking it would just be a short while before getting the remaining hardware piece sorted out with CleverCycles in order to re-release the kit. But then something unexpected happened. Partway through this process we worked out an elegant use of the motor on a right-hand drive with a Patterson crankset in a way that doesn't force the cranks to turn. Here it is on one of the Edgerunner prototypes:

Edgerunner with Stokemonkey

So the complete Stokemonkey kit is now getting a hardware redesign in order to accommodate both classic left side AND freewheeling right side installations. We don't expect the full package to be ready until late March or early April now, but we have listed the motors only for sale for people either making a DIY mount or replacing the motor on an existing Stokemonkey setup.

Posted By Justin Lemire-Elmore

After a successful design rollout with the Edgerunner bikes, we're now making a universal version of the clever 'twist' battery rail concept that will allow you to attach the eZee flat battery to almost any bike rack or structure.BattAnch_LTN (20K)

With this rail adapter, you don't have to buy the so-so quality eZee racks to mechanically lock the battery to your bike. The flexible clamp blocks can secure tightly to rack tubes from 4mm up to 12mm in diameter and at any angle. You can attach it horizontally on top of the rack and the battery sits up 15mm leaving enough space for panier hooks on the side. Or, you can clamp them on the side, leaving room for a trunk bag on top or giving you the option of having 2 or 3 batteries all locked to the rack.
 
With the twisting rather than sliding action to engage the rail, the battery can also fit in areas that otherwise don't have clearance for a battery to slide in and out. And once the battery is locked in place, it covers up the fasteners that holds the clamps together, so that even a thief equipped with tools wouldn't be able to take it off.
Posted By Justin Lemire-Elmore

Lets Go An'So

February 25, 2013 9:50:54 PM PST

AnSo_WindAnne-Sophie has handled all of our admin and accounting for the past 3 years in addition to running the little unishop here. However, last month she took off for what will surely be the adventure of a lifetime, attempting to ride a custom-made touring unicycleacross South America, from the tip of Patagonia heading north to Santiago, Chili, and possibly beyond.

 
For those interested in following the trip, have a look at the monocyclette.ca website, which has a map with GPS tracker that is updated with daily locations. With 80+ kph headwinds and plenty of long stretches of gravel road, it's been off to a great start! 
 
While we can never match An'So's knowledge and passion for unicycle know-how, we will do our best to keep the unicycle shop stocked and in good form until she gets back in June or July.
Posted By Justin Lemire-Elmore

Troubleshooting Guides

November 30, 2012 9:47:30 PM PST

It’s no secret that there are a lot of things that can (and do) go wrong with electric bicycles. In fact, we spend considerably more time helping people troubleshoot and solve problems than we do selling or making stuff. Adam has been busy summarizing some of the more frequent issues with a series of formal troubleshooting guides that can help identify common failures and do basic repair work. Have a look, from motor hall replacement to identifying shorted controller mosfets, plus DIY connector pinout guides and crimping instructions.

Posted By Justin Lemire-Elmore

Rear Light Stocking Stuffers

November 30, 2012 9:47:30 PM PST

Box_8LEDRB_TN (51K)

While on the subject of lights, we've got a pile load of our popular rear LED lights with various cosmetic defects that have accumulated over the years. Some have residue of the silicone mold stuck to the surface, others have visible air bubbles in the casting, others have too much or not enough die in the resin, and others are the result of us playing around with new manufacturing techniques. These are all perfectly functional with a lifetime guarantee, bright but not blinding, the perfect tail light for your 24V, 48V, 72V, or even 96V ebike. We’re selling them for $20 apiece, maximum 2 per person.

Posted By Justin Lemire-Elmore

Lumenators in Focus

November 30, 2012 9:47:30 PM PST

Old_New_Lens_TN (6K)Lens_Output_Compared_TN (4K)

We've also retooled the Cycle Lumenator lights with a new lens that provides a sharper beam focus, helping to project the light further down the road while reducing the amount of beam glare above the horizon and into oncoming traffic. Both the standard and multi-mode Lumenator lights have been updated with the new lens standard and are available now.

Posted By Justin Lemire-Elmore

New Front Lights

November 30, 2012 9:47:30 PM PST

Waterproof 12 LED Grin Ebike Light (3K)

We acquired a large CNC milling center for our shop this summer, and now that we know how to use it a whole world of possibilities has opened up. Among the first things we tackled was a redesign of our front LED array light molds, now renamed the Grin ElectroLights. The new model is still rugged, waterproof, and capable of running from 15-100V, but now uses a proper mounting bracket rather than zip ties for attachment, looks better, and is $10 cheaper as well.

The first production batches are hot off the press, (or epoxy curing oven, to be more precise) in time for your holiday wish list.

Posted By Justin Lemire-Elmore

eZee Batteries and Kits

November 30, 2012 9:47:30 PM PST

Along with the shipment of Edgerunner bikes came a resupply of the 36V 9Ah LiFePO4 and 48V 10Ah LiMn batteries, carrier racks, and other kits (like 700c rear) that were out of stock. For the batteries, we're committed enough to this design that we have written a full spec sheet and user manual for each model, click on image for full details.

Grin Tech User Manual for 36V 14.5 Ah Lithium Manganese (LiMn) Battery Grin Tech User Manual for 48V 10Ah Ah Lithium Manganese (LiMn) Battery Grin Tech User Manual for 36V 9Ah Lithium Iron Phosphate (LiFePO4) Battery
Posted By Justin Lemire-Elmore

Edgerunners - Available Now

November 30, 2012 9:47:30 PM PST

Edgrunner_Black (22K)

First and foremost is that 16 months after starting a project partnership with Naked Bikes, Xtracycle, and eZee, we have at last available for sale the Xtracycle Edgerunner electric utility bike.

The Edgerunner carries an impressive amount of cargo and passenger capacity with the Xtracycle longtail rear end, yet it still maintains an attractive and familiar bicycle aesthetic, and it handles like a regular bike too. The V2 eZee motor in the 20” rear wheel hides discretely under the saddle bags and provides ample hill climbing capability, while a high capacity 36V or 48V battery tucks neatly under the deck without resorting to a proprietary frame-mounted battery module.

Edgerunner_Frames_SM (18K)

We've been hesitant about dealing in turn-key ebikes in the past, but for us this one hits all the right marks and truly brings out the best of what an ebike can offer. We have the hub motor electric version available now in 3 different colour options, and are hard at work preparing a Stokemonkey variant with a Nuvinci rear hub for release in early 2013. They're listed here, on a new section of our store site.

Posted By Justin Lemire-Elmore

2012 Year End and Holidays

November 30, 2012 9:47:30 PM PST

This year has been a solid one for us and we want to thank all the great customers from all over the world who have made that happen. Below is a world map showing the destination of every outgoing shipment that we sent in 2012. Can you find yourself? Surprised at how many others in your city are fellow Grinners too? (The longitudinal resolution is cropped a bit to preserve anonymity).

2012_Sales_TN (39K)

Things have clearly come a long way from our manual pin map of 2007, and it's fascinating to see what a global phenomenon the DIY electric bike scene has grown into.

Let's keep that trend alive and healthy, as the world slowly comes to realize that ebikes are the answer to so many of our future troubles.

Open Sat Dec 22nd, 12-5pm, then Closed Dec 24th - Jan 3rd

We hope everyone gets to enjoy a great holiday too. We will be open this Saturday, Dec 22nd, from 12:00-5pm for anyone wanting to get parts for their winter build projects or get in on the Christmas specials. That will also be the last day to pick up one of the new Xtracycle Edgerunner ebikes this year. After that the shop will be closed until Jan 3rd 2013.

Did we say Christmas Specials?

XMAS_Motors_TN (8K)

In additional to the cosmetic defect rear LED lights mentioned last week, we've got a whole new stash of miscellaneous motors, batteries, controllers, lights, and Cycle Analysts which are priced to sell. Adam has compiled all of these on the endless-sphere For Sale forum where they are available first come first serve.

Posted By Justin Lemire-Elmore

Awesome Crimp Tool

November 30, 2012 9:46:47 PM PST

Crimping_Action (49K)

One thing that helps in the service and repair business is having the right tools. After going through a multitude of different crimping tools for the JST-SM connector used in all the signal wires of an ebike system, we finally found one with a precise wire-EDM cut die that does perfect crimps every time. This has been such a joy to use in our own repair work that we purchased a few case loads of them to offer to our DIY inclined customers as well, on our Misc. Parts page. It’s one item you’ll be glad to have in the tool box.

Posted By Justin Lemire-Elmore

V3 Cycle Analysts

September 30, 2012 9:41:26 PM PDT

We are now offering a torque assist bundle with all of our conversion kits based on the Version3 Cycle Analyst and THUN torque sensing bottom brackets. This allows any ebike kit to have proportional torque pedal assistance, with all the assist settings fully customizable. And unlike any other PAS system it also gives you a readout of your human power output in watts, something previously only available in expensive training power meters that start at $1000. Although the Version3 Cycle Analyst firmware is still in final beta state, we are making the unit generally available now as the hardware and B19 and B20 firmware have been totally solid.

In addition we've made available a number of upgrade and repair parts for advanced users of the Cycle Analyst, such as spare shunts, cable harnesses, mounting brackets etc. all listed on the the recently updated CA store site.

Posted By Justin Lemire-Elmore

Stokemonkey

September 30, 2012 9:41:26 PM PDT

New_Stokemonkey_TN (8K)

It's been a year since CleverCycles discontinued the Stokemonkey drive for longtail bikes due to sourcing complications. We've been working behind the scenes with them to bring about a next generation Stokemonkey and are glad to announce a new mid-drive motor that is smoother, 1kg lighter, and better waterproofed than the original.

While there are still some details to sort with the brackets and hardware before the full kit is available again, we do have some motors with cosmetic defects suitable for those doing custom DIY mid-drives. These hubs are already listed on our simulator in two different windings (StokeM08, 09) and fit a single speed freewheel with a bare minimum of axle protrusion. Here is a side view showing key dimensions. Please contact us for details if interested.

Posted By Justin Lemire-Elmore

Veltops

September 30, 2012 9:41:26 PM PDT

Veltop_Riding (19K)

Some people love the rain, some people don't mind suiting up head to toe in gortex in order to brave the rain. But for most people, riding in the rain sucks. While recumbent bike riders have had fairings and protection for some time, Veltop from France is the best full cover bike canopy for upright bikes that we have seen.

It's not perfect but it's a step in the right direction, and for those who want to stay mostly dry without suiting up, and who don't mind turning heads everywhere, this can be a fun way to go. Your electric hub negates any extra wind drag of the windscreen. We've got a few extras on hand and have listed them on a new 'cargo/rain' section of the store site.

Posted By Justin Lemire-Elmore

Crystalyte 5403

September 30, 2012 9:41:26 PM PDT

In our last Crystalyte shipment we brought it some of the very large 5400 series Crystalyte motors at the request of several customers. These motors are tanks, designed for 150mm rear dropouts, and their 13.5kg (27lb) mass means they can handle significant power levels for long periods of time before overheating.

Crystalyte_5403_TN (10K)

The hubs are on our simulator, and have been modeled in CAD as well. We only have a handful left from this order available both independently or as part of a kit with a 40A 72V controller.

Posted By Justin Lemire-Elmore

Smaller Motors on Simulator

September 30, 2012 9:41:26 PM PDT

Big_Small_Motors_TN (11K)

We've also dyno tested and modeled some lightweight (< 2.5kg) geared motors which are now on the simulator, including the Cute Q100 and a couple windings of Tongxin motor. It’s been on our mind for many years to have something in the small and light category for those who are only after 200-300 watts of assist. Whether one of these fits the bill is too early to say, but those who want to be on the on the early testing front can contact us for samples.

Posted By Justin Lemire-Elmore

eZee Kit Updates

August 1, 2012 5:37:00 AM PDT

More Powerful eZee Motors

eZee_Stator_TN (6K)

We've worked with eZee to help make a higher torque version of their geared hub motor, by upgrading to a wider 17mm stator core inside without any change to the external dimensions. This has increased the power and torque capability by almost 30% with only minimal increase in weight. We have the V2 eZee motors now in stock in all 20", 26" and 700c kit sizes and have modeled them on our motor simulator as well.

 

Change in the Accessories

There are several other changes we have made to the eZee kits as well. The eZee kits now come standard with a 25A rather than a 20A controller to take advantage of the extra torque capability of the motor. As well, previous items like the PAS sensor and ebrake cutoffs are now going to be handled via a Cycle Analyst, rather than directly to the controller.

LED Battery Indicator

The 3-LED indicator has also been eliminated. We will soon have a more comprehensive 5-LED option for those who want a basic indicator but don't require the full features of the Cycle Analyst.

Posted By Justin Lemire-Elmore

Kris Holm Disk Unicycles

July 31, 2012 9:37:00 PM PDT

KH_Spirit_Crank_TN (6K)
KH_Spirit_Crank2_TN (5K)

And last but not least, the new disk brake compatible Kris Holm unicycles are in stock at our little uni shop too. The KH spirit cranks include a standard 6-bolt disk attachment that puts the rotor on the outside of your unicycle frame, and with a retrofit bearing clamp you can easily take advantage of disk brakes on any older unicycle as well.

Posted By Justin Lemire-Elmore

V3 and Pedalec

July 31, 2012 9:37:00 PM PDT

Thun_Install_TN (5K)

Finally, the Cycle Analyst V3 Beta program is ready to ramp up to the next level for wider spread testing, as we have a fresh production run in stock. Please see the special V3 purchase page for details. We also have a good supply of Thun torque sensing bottom brackets with a custom cable harness that lets you install it and plug into a CA without any connector crimping, and are keen to see more riders experiment with a CA V3 pedalec mode.

Posted By Justin Lemire-Elmore

Robust Mounting Bracket

July 31, 2012 9:37:00 PM PDT

CA_Bracket_TN2 (7K)

While we were at it, we also tooled up a custom "Grin Tech" mounting bracket for the Cycle Analyst enclosure that is stiffer than the previous bike light bracket, uses 100% stainless steel fasteners so will not rust, and has a wider clamping range, going all the way down to 7/8" bars and up to 1.5"

Posted By Justin Lemire-Elmore

Molded Shunt and the Stand Alone Model

July 31, 2012 9:37:00 PM PDT

1mOhm_Shunt_TN (5K)

We're also manufacturing a precision 1.00 mOhm potted shunt as a separate product, which effectively converts a CA-DPS into the Stand Alone Cycle Analyst. When a Stand Alone CA is ordered, you now have a disconnect between the shunt and the CA which can facilitate wiring, and makes it easy to later use your CA as a direct plug-in device should you get a compatible controller.

Posted By Justin Lemire-Elmore

Aug 2012, New Cycle Analyst Standards

July 31, 2012 9:37:00 PM PDT

We've been working hard this year to update our Cycle Analyst line to keep relevant to the rapidly evolving ebike field. This includes big changes to the insides, slight changes to the outsides, and a very much revamped manufacturing process that will help us scale with the growing interest.

Version 2.3

CA_V23_TN (6K)

The standard Version 2 series of Cycle Analyst has been upgraded to V2.3. While the external operation is nearly identical to the V2.25, the internals are completely redesigned. All units now all come default with a communication cable both, usable not only for datalogging but also firmware upgrades. The change list is explained here.

Molded Shunt and the Stand Alone Model

1mOhm_Shunt_TN (5K)

We're also manufacturing a precision 1.00 mOhm potted shunt as a separate product, which effectively converts a CA-DPS into the Stand Alone Cycle Analyst. When a Stand Alone CA is ordered, you now have a disconnect between the shunt and the CA which can facilitate wiring, and makes it easy to later use your CA as a direct plug-in device should you get a compatible controller.

Robust Mounting Bracket

CA_Bracket_TN2 (7K)

While we were at it, we also tooled up a custom "Grin Tech" mounting bracket for the Cycle Analyst enclosure that is stiffer than the previous bike light bracket, uses 100% stainless steel fasteners so will not rust, and has a wider clamping range, going all the way down to 7/8" bars and up to 1.5"

V3 and Pedalec

Thun_Install_TN (5K)

Finally, the Cycle Analyst V3 Beta program is ready to ramp up to the next level for wider spread testing, as we have a fresh production run in stock. Please see the special V3 purchase page for details. We also have a good supply of Thun torque sensing bottom brackets with a custom cable harness that lets you install it and plug into a CA without any connector crimping, and are keen to see more riders experiment with a CA V3 pedalec mode.

Posted By Justin Lemire-Elmore

Past Fall Events

July 31, 2012 9:37:00 PM PDT

Finally, thanks to those who made it out to the Sooke Slow Food Cycle last month. It was an honour to be invited back to one's hometown in order to spread community awareness about electric bicycles, and to see local towns take increasing interest in low impact transportation alternatives.

Posted By Justin Lemire-Elmore
Grin_Signage (11K)

With June in force, we're extending the regular store hours to include Saturday as well from 12:00-5pm, and will be rotating our crew of staff to have someone knowledgeable on hand.
We’ve also finished making and installing an awesome all aluminum “Grin Technologies” on the building, so those of you trying to find us on the weekends will no longer have to treasure hunt for the little window signage.

 

Vancouver Maker Faire

The one exception will be Saturday June 23rd, where we will be present at the 2nd annual Vancouver Mini-Maker Faire, this time taking place at the PNE. We had a great time checking out neat projects once again at the San Mateo Fair last month, and look forwards to being a part of the Vancouver event.

Posted By Justin Lemire-Elmore

Lithium Battery Shipping Update

April 30, 2012 9:32:35 PM PDT

Li_Danger_TN (9K)

We now have dangerous goods training to ship lithium ebike batteries using Fedex air services. Unfortunately this adds a $50 FedEx hazardous material surcharge and about $10 in special packing material, but it does mean we can resume battery-only shipments anywhere in the world. The hazmat shipping is not yet added to our online cart checkout, so for the time being we will send updated quotes over email. We are also working on a solution for ground shipping to the US via a different carrier.

Posted By Justin Lemire-Elmore

And Power Ports on the V2 CAs

April 30, 2012 9:32:35 PM PDT

CA_Power_Port_TN (8K)

We've also standardized all of our V2.25 CA devices to include a short DC power plug as standard. By default this ships with a protective rubber cap, but if you ever want to connect a Lumenator light, DC-DC converter, or other device that can run off the pack voltage then it couldn't be more convenient to plug in. The power is right there at the CA, no additional wiring required.

Posted By Justin Lemire-Elmore

Version3 Cycle Analyst - Upcoming Pilot Program

April 30, 2012 9:32:35 PM PDT

CA_V3Beta_TN (9K)

We had a booth at the Taipei Bike Show earlier this year and unveiled the Version3 Cycle Analyst device under development. Among other things, this unit can directly connect to a THUN torque sensor, enabling any ebike conversion to have a proportional torque control like BionX. It also features a battery state of charge graphic and a host of new capabilities in the setup menu.

The full details are discussed in the V3 CA endless-sphere thread where we are experimenting with a limited beta release. There will be a more general pilot batch later this month, so those wanting to build a non-proprietary pedalec ebike should stay tuned.

Posted By Justin Lemire-Elmore

Unicycle Party - May 11th Starting 6:30pm

April 30, 2012 9:32:35 PM PDT

KH_Party_TN (17K)

This Friday May 11th we're pleased to be hosting the book release party for Kris Holm's hot-off-the-presses "Essential Guide to Mountain and Trials Unicycling". This is the first comprehensive treatise on modern unicycle technique and skimming through the pages makes you want drop everything and hop on a one-wheeler. Some drinks and snacks will be provided and a good stash of books themselves will be on hand for anyone wanting a copy signed by Kris himself.

Plus, if everything goes as planned, we might even have a Grin Technologies sign installed on our building to help you find us, and some more novel geared unicycle projects for brave riders try out.

Posted By Justin Lemire-Elmore

May 2012, Cleanup and Party Time

April 30, 2012 9:32:35 PM PDT

Garage_Shelf_TN (18K)

It's been over a year since we moved to our new shop space in False Creek. Renovations are always ongoing but the last round included a big spring cleaning to organize piles of miscellaneous inventory we'd like to clear. This means lots of bargain goods on our garage sale shelf for those hunting for project parts. The list includes sample and prototype batteries, hub motors, slightly used or scratch & dent CAs and ebike lights, motor controllers and more. Available at the moment for walk-in customers only.

Posted By Justin Lemire-Elmore

Farewell to Louise

April 30, 2012 9:32:35 PM PDT

Finally, it is with some sadness that pay tribute to Justin's mom Louise, who died unexpectedly in a car accident at the end of May. She was large driving force in many of the ambitious shop and office renovations GRIN has done over the years, volunteering tons of elbow grease and bringing a special touch for all the colours, artwork, and plants that breathe life into a space. We will miss her, but the legacy of her help here will live on.

Posted By Justin Lemire-Elmore

Torque Arm Webpage

April 30, 2012 9:32:35 PM PDT

Trq_Page_TN (6K)

For those who've been a bit uncertain about ebike torque arms, when you need them, how to install them, etc. we've completed a long overdue section of our website devoted to this topic. Please have a look and let us know if it covers most all bases you'd want to know about.

Posted By Justin Lemire-Elmore

CVT Unicycle Project

April 30, 2012 9:32:35 PM PDT

Uni_Grinding (10K)
Uni_OnBench (18K)

One of the things we will have to show at Maker Faire is the infinitely geared Nuvinci unicycle project that Justin built in April/May. The hope is to have this fully electrified in time for the fair as well, after all, what could the world need more than a continuously-geared, chain-driven, electric-assist uni?

Posted By Justin Lemire-Elmore

‘Y’ Splitter Cables

December 31, 2011 9:26:15 PM PST

Dual_TN (8K)

That said, it is always easier on the packs to have lower current discharges, so runningtwo in parallel is often a good idea. You not only double the range, you increase thelongevity of the battery by having lower currents. We have 12g ‘Y’ battery joiner cablesin stock using high detent Anderson pins to make parallel arrangements easier.

On a similar note, we’ve also made a standard ‘Y’ splitter for the throttle signal as well,making it straightforward to run two motor systems off a single throttle signal. It’s noteveryone who wants to run dual motors, but we help with enough interesting projects running front and rear hubs, or trikes and quadracycles with side-by-side hubs, to make this worth stocking.

Posted By Justin Lemire-Elmore

Battery Current Limits

December 31, 2011 9:26:15 PM PST

We’ve had the BMS on both the 36V 14Ah and 48V 10Ah eZee lithium packs upgradedto handle up to 40A of current, meaning that it’s no longer necessary to run two batteriesin parallel for high power setups. These packs are all now made with the more premiumPP2250 Samsung Cells that are 5C discharge rated, as opposed to the 3C rated cells thatwere formerly in use.

Posted By Justin Lemire-Elmore

Analogger Manual

December 31, 2011 9:26:15 PM PST

AnaloggerManual_TN (5K)

If history is any guide, it takes us 12-18 months from releasing a product before wefinally get all the documentation and user guides finished. So on that note, we’re pleased to release the first proper revision of the Cycle Analogger owner’s manual. This explains many features that we had built into the device but had not yet advertized, from dualchannel temperature sensing to customizing the file names, and other tweaks. Feedback is always welcome.

Posted By Justin Lemire-Elmore

..and Disk Spacers

December 31, 2011 9:26:15 PM PST

DiskSpacer_TN (7K)

While we were at it, we also had a set of spacers made up to help deal with caliperclearance problems that often accompanies disk brake compatibility with Chinese hub motors. This is especiallya problem with the Nine Continent hubs that only give ~15mm of space for the caliper. The spacers are 1.6mm thick and either one or two of them can be placed under the disk as required.

Posted By Justin Lemire-Elmore

Rear Torque Arms...

December 31, 2011 9:26:15 PM PST

TorqArmRev4_CAD_TN (4K)

After a lot of design prototypes and field testing we have finished a new torque armspecifically for rear hub motors. This unit is made from thick ¼” stainless steel plate,meaning it can resist axle spinout in even highly overclocked motor axles. And theunique 2-piece design allows it to work with vertical dropouts, horizontal dropouts,machined cavity dropouts, and anything in between. The support arm clears up and abovemost fender eyelets and includes slots for up to 3 hose clamps for extra security.

Posted By Justin Lemire-Elmore

Drilled Motor Side Cover

December 31, 2011 9:26:15 PM PST

SidecoverHoles_TN (12K)

We’re now providing the option of a drilled out side cover for the Nine Continent andCrystalyte motors based on results from our water ingress tests. For people who rideregularly throughout the winter but bring their bikes indoors overnight, this provides thebest way to prevent water from getting trapped inside the hub and rusting out both thestator and the hall sensors. We also coat all the exposed iron with Boeshield T9, sothat the temporary water that does make it in will evaporate without leaving a trace.

Posted By Justin Lemire-Elmore

New Direct Drive Motor Options

December 31, 2011 9:26:15 PM PST

A few shipments came in over the winter adding more motor direct drive motor choices to our collection. The powerful HS35 series from Crystalyte which was previously only in the rear is now available as a front motor as well. They did this while still maintaining 17mm of disk caliper clearance, and a motor exit cable on the axle side rather than the end. We’ve also got our front and rear 20” Crystalyte motors made with an even faster winding choice,the HS3548, to make up for the smaller diameter.

From the Nine Continent shipment, we now brought in the somewhat slower 2808 hub as well. This motor wind has the highest copper fill factor of all the NC hubs (64 strands, vs. 60-63 strands in the other winds) and the slower wind is better suited for those running at high voltages.

Both this hub and the new HS3548 from Crystalyte have been fully modeled and put on our simulator too.

Posted By Justin Lemire-Elmore

Winter Riding Tips

December 31, 2011 9:23:00 PM PST

This is also the time of year when we start dealing with a lot of troubleshooting issues related to the cold and wet weather, so here are a few tips:

  • Lithium battery performance degrades a lot near freezing temperatures, resulting in 20-25% less capacity, and the battery BMS circuit can trip prematurely from additional voltage sag at these lower temperatures. If you can keep batteries indoor and warm until just prior to the ride, they'll deliver closer to full capacity.
  • If you are parking the ebike for winter, be sure that the lithium battery is stored in an initially charged state and is unplugged from the controller. A lithium battery that is flat and then stored for several months is liable to self-discharge to the point that the cells are irrecoverably damaged.
  • Water has a way of getting into even totally sealed hub motors and causing them to rust out on the inside. Usually the hub will run for weeks or even months with water in it before the corrosion builds up enough to have an effect, so we recommend opening up the motor on occasion to have a peak and let it dry out if necessary. We suspect that the primary avenue for water entry is through the inside of the wires, and so it's advisable to cover up the connector area.
Posted By Justin Lemire-Elmore

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