Just before tipping!Well we managed to have the most crashes in one ride during the cargo bike championships last friday; tip for future events, 2 wheels is better than 3 for fast cornering! Anyways this coming weekend is also packed with with activity, and that includes Grin having a booth both at the inaugural Main Street Bike Expo on Saturday June 10th, and also both Saturday and Sunday at the Vancouver Mini Maker Faire.

At the main street bike expo we'll have a good sampling of converted cargo ebikes, converted Bike Friday and Brompton folders, and some more typical converted commuters on display as well. If you want to learn about retrofits firsthand from us and also check out many other players in the local Vancouver cycling scene all under one roof then this is an event not to miss. It is happeng at the Ellis building on Main St. from 11am - 6pm.

Maker Faire PosterMain Street Bike Expo Poster

Secondly, as is traditional for our Maker Faire presence we've built yet another version of our weight sensing electric longboard. This one is very close to hitting all the marks for an electric skateboard conversion kit using our hands free lean control, including suspension trucks and a ruggedized miniature deck mounted CA. If you want a taste ride on this board in an event full of other creative DIY projects then get your Maker Faire tickets now.

Board BuildingRugged mini CA3 EnclosurePotted dual FOC motor controllers

Posted By Justin Lemire-Elmore

After missing the beat last year we're back to being involved with now the 3rd annual Vancouver Cargo Bike championship this Friday. It's happening once again at the end of Bike to Work Week at Creekside park, only this year there's a dedicated track so less dodging of pedestrians around the seawall bike path.

It's not too late to register and we'll be sponsoring a prize of a $150 (or 15% off an order) gift certificate for anything at Grin to a winner in the e-cargo category. We hope to see many of our customers there and if you've been considering a cargo ebike yourself this would be a great event to check out. We'll be racing our legendary Frankentrike and as always we have a fondness for the homemade and wacky.

Cargo Bike Championship Race MapCargo PosterOur Original Frankentrike, with a 700lb load of drywall scraps. The cargo haul during the race will be a little more forgiving.

Posted By Justin Lemire-Elmore

Hydraulic Stopping Power in your Hands

May 27, 2017 5:12:12 PM PDT

Magura MT4e BrakesWe've been able to add the powerful Magura MT4e hydraulic brake system to our offering of ebike kit accessories. This provides amazing hydraulic stopping power when you need it, with a built-in switch on the lever arm to activate regen or controller cutout.

If you already have hydraulic brakes then the TripWire is a great way to add electric cutoffs to your existing levers. But for those looking to upgrade their ebike from mechanical brakes to hydraulic or building up a new conversion from scratch, these Magura's are among the best.

The brake levers are a symmetric flip-flop design so the same lever works equally well on the left or right handlebar, and come fully bled with 2200mm long hoses. Magura has designed them so that you can then cut the hose to length without the complicated bleeding step if you follow their instructions (See Video Here). The hardware for cutting the hose to length is included with each kit.


Magura Brake Connector Options

We've got them stocked with 180mm disk rotors and various frame caliper adapters to fit this rotor size. For the electrical termination you can choose between a 15cm cable with 2-pin HiGo plug or a longer cable with JST-SM connectors for setups running a V3 Cycle Analyst.

Magura Brake Adapters

Posted By Justin Lemire-Elmore

Ebike parts tend to be lag the standards used in the modern bike industry by several years but we do our best to move things forwards. Recently the 650b aka 27.5" wheel size has largely replaced 26" as the standard for new mountain bikes, but hub motors in 650b rims have been nearly impossible to find. 

650b Rim Size Compared650b Rim Options in Hub Motor BuildsExample of 650b eZee Kit Motor

We've addressed this and now have our front and rear eZee kits available in a prebuilt 27.5" option with a Schwalbe Big Ben tire. We also have stock of both Alex DM24 and and Velocity Cliffhanger rims. We can now offer a 27.5" size for the 9C+ kits, Bafang G01 kits, TDCM IGH kits, and other custom wheel builds. This addition will ensure that Grin has a drop-in hub motor option for all the newer bikes out there.

Posted By Justin Lemire-Elmore

We're new stepping closer to the full release of the V3.1 Cycle Analyst firmware and are smoothing the upgrade process. The Cycle Analyst software suite has been updated to contain the latest 3.1b20 firmware. This latest build is available for Windows, Linux, and Mac. And if you are missing the USB->TTL programming cable, we have that now available on the amazon store too, along along with the digital aux buttons.

Earlier this year we produced a video showcasing the new digital aux input buttons, and have now prepared 4 more short youtube videos highlighting some of the other new features available in the 3.1 firmware, from screen customization to factory resets. Have a look

 

Video showing the ability to view custom parameters on CA display New Ebrake Options
Youtube video showing the ability to customize what item(s) show up in the main screen. Youtube video showing new ebrake setup menu table, with proportinal regen, logic polarity, and minimum brake time.
Showing and Hiding Display Screens Factory Reset Feature
Video tutorial on selecting and hiding which display screens show up when still or when moving.  Demonstration of the new factory reset feature, where you can restore all of your CA3.1 settings to a factory default state. 
Posted By Justin Lemire-Elmore

Leaps of Joy, Spring Cargo Ebike Sale

March 14, 2017 7:12:23 PM PDT

At last Xtracycle has released the long awaited follow up of their FreeRadical bolt on cargo extenion kit, now called the Xtracycle Leap. It's a full redesign that is cleaner, more rugged, and more versatile than the original, with accomdation for 24" - 29" wheel sizes and a greatly improved frame attachment system.

Xtracycle Leap Views

We've got them in stock both stand alone and as part of a full electric package with a rear geared or direct drive hub motor. And to celebrate their arrival, and cargo ebikes in general, we're having a month long sales event on most of our cargo packages to kick start the season!  This includes:


  25% discount on the great value eZee Expedir bikes  
  (no coupon needed)  
  20% discount on the Yuba Cycle Stoker system   (coupon StokeRight)  
  15% discount on the classic Stokemonkey kit    (coupon StokeLeft)  
  10% discount on the new Leap + Motor kits   (coupon LeapHigh)  
  A free Satiator upgrade wih the Juiced Bikes ODK   (coupon FastCharge)  



To use the coupon codes, you'll need to be logged into our website with an account and then you will have the opportunity to put in the code during checkout. This sale will last until April 15th. 

Cargo Ebikes on Grin Floor
Plus, for local Vancouver customers are selling our floor model Yuba Mundo and 2014 Edgerunner ebikes, both with Cycle Stoker drive systems installed. So if you've been mulling over a cargo ebike purchase for a while but have been a bit leary of the prices, now is the time to drop by our shop for a visit.

Posted By Justin Lemire-Elmore

Vancouver Bike Show LogoWe're used to travelling all around to various trade shows and events but it's been a while since we've had one in our own backyard. This coming weekend Grin will have a booth in the Vancouver Bike Show at the Vancouver Convention Center downtown.

Not only will we be showing off some of the great new Grin products like the LiGo batteries, All Axle hub motor, Tripwire brake cutoffs, Satiators and Phaserunners, and all that, but we're also running a sale on cargo ebikes, including 25% off on brand new eZee Expedirs. There will be floor models to try and both Bike Friday and Brompton folding bike kits built up as well.

If you are into the Bike and/or Outdoor scene in Vancouver, there is a lot going on at the Convention center this weekend so we recommend you register and come for a visit. Our booth is B300 near the Bike Trials Show.

Floor Map of Vancouver Bike Show

UPDATE:  Our first day at the VBS has been really great and we look forwards to meeting many more local Vancouverites on Sunday. There is lots to see and we have some show specials to offer those who visit so it.our little booth.

Aaron at Updated display case booth at VBS 2017 Explaining all the kit options...

Posted By Justin Lemire-Elmore

Introducing the LiGo Batteries

February 21, 2017 1:21:11 AM PST

Last week was a momentous occasion for Grin Technologies, as our innovative LiGo battery modules got ready for primetime. I'll let the video do the talking!

Posted By Justin Lemire-Elmore

Digi Aux Buttons and CA 3.1 Beta

February 10, 2017 11:39:32 AM PST

Our product update and video for this week relates to something close to our hearts, the seemingly timeless Cycle Analyst. While the Version 3.0 CA firmware has been stabilized for some time, our partner Teklektik has been quietly working very hard towards a 3.1 release that fully realizes all of the features we had originally envisioned for this device. One of the best of these is a dual button control input, making on the fly adjustments easier than ever before. Have a look:

Using this requires first updating your Cycle Analyst firmware. The V3.1 beta releases have been published on endless-sphere since last spring, but the latest CA3.1B13 code is getting very close to the final release, and we think it's time fo a wider swath of users to check check it out. You can download it from ES or our CA3 info page, just keep in mind that an upgrade from a 3.0 device will overwrite all of your settings and statistics, so make sure to record those first before reflashing.

Digital Aux Input Buttons


We have the inexpensive dual buttons in stock to ship to anyone wanting to get a head start on this upgrade path for their CA devices. Then in March/April we expect to make the 3.1 firmware our new standard that is preloaded on all the CA3 devices, and we will have a number of video tutorials covering the many other new features.

Posted By Justin Lemire-Elmore

Hailong 36V & 52V Batteries with UN38.3 approval

February 2, 2017 8:56:37 PM PST


We quietly started carrying Hailong downtube mount battery packs last fall, but didn't announce anything as they lacked UN38.3 certification and so were available for local pickup only. Well, that's all changed and we now have a 52V 13Ah downtube battery with UN38.3 documents that we can ship over the world. These battery packs are using the Panasonic GA cells, nominally 3.5Ah each but we'll rate them more conservatively at 3.3Ah.

Hailong Downtube Batteries Frame Bag as Alternate Mount for Downtube Packs
These are great low center of gravity batteries for ebikes running 20-25A motor controllers. The BMS circuit is capable of 40A continuous but usage at these levels isn't recommended for cell longevity. For bikes that don't have suitable waterbottle eyelets on the downtube, we also have sourced a nice Banjo Brothers frame bag that holds them neatly from the toptube, and helps your conversion look less like an ebike with the obvious battery exposed.

Not sure how to pick a battery?

Battery Kits Info PageWe've also recently rewritten our battery kits info page, updating it to reflect our 2017 battery options with summary explanation on choosing the best pack for your setup. 

This updated page also includes tips on parallel or series wiring for connecting batteries and other tidbits that you may find useful when considering a new battery purchase. 

Posted By Justin Lemire-Elmore

This time last year we were deep in the throes of converting and renovating a giant warehouse go become a new home for Grin, in preparation for a lengthy business move we didn't really ask for. And now that we're settled in, it's payoff time and are ready to rock like never before. For the foreseeable future we'll have a new product and/or video announcement to share with you every single week.

We'll start things off by announcing the TripWire, a new product for those looking for an ebrake cutoff solution that tacks onto existing brake levers rather than replacing them. We had tried developing devices based on magnets and reed switches, touch sensitive pads, and other technologies over the years, never quite coming up with a scheme we were happy with. Then out of the blue, one of our customers Tim O'Brien approached us with a solution that was truly great. I'll let Tim explain it himself here:

We've been working with Tim to iron out design details and hare happy to have received his first production batch over the holidays. They're available both with a short cable for plugging into a V3 Cycle Analyst device to enable proportional regen, and with a long cable length to go directly to the controller ebrake input if you don't have a CA3 in your setup.

Posted By Justin Lemire-Elmore

Holiday Hours and Wishes

December 21, 2016 5:07:30 PM PST

Best Wishes from all the us at our staff Christmas party

We wish everyone a splendid holiday season and we'll be busy as usual fulfilling orders and answering questions during the next few weeks, being closed just for the statutory holidays on Christmas and New Years. 

Plus for any real last minute shoppers we've decided to open our doors on Saturday Dec 24th from 11am to 4pm. We just received a fresh stock of beginner unicycles and have tons of Grin goodies to stuff under the tree. 

Posted By Justin Lemire-Elmore

72V Satiators, UL, CSA, and Adapters Galore

December 15, 2016 1:30:00 PM PST

72V Satiator ScreenThe 72V Satiators have now passed UL and CSA regulatory testing and are in full production in time for every ebike enthusiast's Christmas wish list. Thank you to all those who participated in the beta/pilot run earlier this year while we sorted out details. We've got them listed not only on our store site but also stocked at amazon.com so that our American friends can get free domestic shipping.

 

As well, we've greatly increased the number of adapter cables available for making the Satiator more plug and play compatible with 3rd party batteries and ebikes. This includes XT60 connectors used RC batteries, 5.5 x 2.5mm DC Barrel connectors used in most frame batteries, Rosenberger plugs on high-end European setups, and 4-pin XLR plugs for the Juiced bikes, along with our previous Anderson and RCA adapters.

Satiator Output Adapter Cables, XLR, DC, Rosenberger, XT-60, RCA, Anderson

All of these cables are available from the drop-down selector on the Satiator store pages and they all include the TRS jack for computer communications with the USB->TTL cable.

Drop down selector for Satiator adapter cable

Posted By Justin Lemire-Elmore

Geared Stokemonkey Motors and Shift Cutoff

November 20, 2016 11:29:31 AM PST

In April we had changes with the Stokemonkey kit including clampset options and a new SAW motor from Crystalyte. Well now we've got two more great updates. The first is a an option now to use a geared rather than direct drive motor. After a lot of testing we settled on the G02 Bafang hub as the perfect candidate, being 33% lighter and yet having 10-15% more torque with the same controller. With these motors, we use a simple fixed cog bolted on the disk mount and take advantage of the motor's intrinsic freewheel rather than using an external freewheel.

Comparison of Geared and DD Stokemonkey MotorsGeared Stokemonkey Motor on Yuba Mundo CycleStoker

That said the geared motor can make a small audible buzz when running, so for those who prefer the silence and intrinsic rugged simplicity of the heavier direct drive motor we continue to offer both choices.

Gearesensor installed on Yuba Mundo Cycle Stoker KitThe second update is that we're offering the gearsensor.com shift cutoffs as an option with both the classic Stokemonkey and Cycle Stoker kits. This Czech made device goes inline with your shift cable and senses when you are changing gears to automatically cut motor power for a moment so that you have a smooth transition. We've had them in stock for a while, but only recently have had all of our CA3 devices updated to provide 5V power on the ebrake connector allowing for plug and play compatibility. These make the mid-drive motor operation seamless. 

Posted By Justin Lemire-Elmore

Statorade Success and Amazon Availability

November 17, 2016 3:40:00 PM PST

Luer Lock Syringe Tip on Statorade

We're calling our Statorade ferrofluid experiment that started last year a wild success. We've had fleet cargo ebike users (like Shift Delivery) see their average motor temperature drop from in the ~100-110°C range to ~70 degrees. It's enabled people to push the continuous power limits of their direct drive motors up a significant margin, and there's been no evidence at all of compatibility problems with glues, varnishes, and enamels inside the motors. Our recently updated Statorade product info page has the details. 

In order to make the Statorade easier to inject, we've updated the standard package to a Luer Lock style syringe with both a twist lock cap and a small diameter plastic needle. This allows you to drill just a tiny 2mm hole for precise injection with less risk of mess. And, as a plus for people in the US, we've got it stocked on Amazon for cheap shipping. Have a look.

Finally for those with lots of ebike motors in their garage, we've also started offering larger 50mL and 100mL bulk bottles of Statorade. They are on special price now until mid-December.  Our goal was to make all of our direct drive hub motors (Crystalyte, Nine Continent, TDCM, and Grin) statorade compatible in 2016 and we are happy to have succeeded in that.

Posted By Justin Lemire-Elmore

Grinfineon Goes Silent

November 12, 2016 1:29:43 AM PST

The custom line of Grinfineon motor controllers has undergone a big update this fall with the switch to a new control chip. It now runs in silent sine wave mode when the hall sensors are plugged in.

Trapezoidal vs Sinusoidal BLDC Motor Controller Drive

So with direct drive motors the assist is almost as silky smooth as the phaserunners, and in sensorless mode it can run motors up to 28,000 eRPM, making it compatible with even high pole count geared motors like the eZee, BMC, and MAC hubs at conventional cruising speeds. We really can call it universally compatible with any ebike motor in the catalog.

Sinewave Grinfineon Electric Bicycle ControllersThese controllers are all in stock in the 20A, 25A, 35A, and 40A models, and available with the purchase of most of our conversion kits too. We have completed a draft of an updated Grinfineon 2.0 user manual that details this new feature set.

 

On the downside, we did have to drop a few features that were present in the previous Grinfineon controller circuits:

  1. 1) The input voltage range is no longer compatible with 24V packs due to the use of a switching rather than linear regulator, so it is only for 36V and higher setups (LVC of 27V).
  2. 2) The automatic hall mapping feature is not available with this sine wave mode. So if you are running sensored, it is necessary to ensure you have the correct hall and phase pinout. Our current version is colour for colour matched with eZee and Crystalyte motors, but other hubs (Bafang, MXUS etc.) may require experimenting with the connections.
  3. 3) While we still have proportional / variable regen from a 0.0 to 0.7V throttle signal for use with a V3 Cycle Analyst, the regen from an external ebrake input is fixed at 50% of max. It does not change with application of the throttle voltage.

Very few people these days are using 24V setups and most customers using proportional regen feature have a V3 CA device, so the only real loss here was the automatic hall mapping. However, we found that this feature was causing complications with the trend to higher eRPM motors and decided in the interest of working with fast geared hubs it was best to stick with a fixed hall map. On the whole though, a very nice upgrade that we think you will like. We have remaining inventory of our trapezoidal Grinfineon 40A Devices (for 36-72V setups) with automatic hall mapping available at a special discount for those looking for a great controller deal.

Posted By Justin Lemire-Elmore

New Rear Motor Options, TDCM IGH and 9C+

October 24, 2016 1:39:42 AM PDT

TDCM IGH Motor, 395 rpmThere are some new items in the rear hub motor department in stock here at Grin. First is a fast (395rpm) version of the 5 speed Internal Gear Hub (IGH) motor from TDCM. This high speed winding choice is perfect for folding and recumbent bikes with 20" wheels which can benefit from the internal hub gears, and is also great for people who want a fast ebike setup in a normal 26" wheel without resorting to high voltage batteries. 

In something of a Grin exclusive we've also had both the standard (300rpm) and fast (395rpm) motors in our latest batch made with 0.35mm laminations for reduced core loss, and using our custom high-flex 12 gauge phase cable for the motor lead wires. These Taiwanese made motors are in a different quality league than any of the direct drive hubs we're used to seeing from china and make for very clean derailleur-free ebike builds. The performance details of this new hub are already live on our simulator.

9C+ Rear Motor ExampleThe second update is that we've now got a rear version of the 9C+ motor series in 3 different windings. Like the front 9C+ motors from Grin, this one features 0.35mm laminations for minimal drag when pedaling, and has a thermistor and fully sealed side covers with a statorade injection port in the disk holes. At just $185 it's a great value motor with impressive performance for those who don't mind if the mechanical details like disk rotor alignment, flange wobble etc. are at Chinese standards. 

Posted By Justin Lemire-Elmore

New StVZO Lights

October 14, 2016 1:53:42 PM PDT

It's with a somewhat sad heart that we had to discontinue our popular Lumenator ebike lights earlier this year due to sourcing difficulties on some key parts.  While a Lumenator 2.0 is still in the future, we have two new 3rd party front bike lights which we are happy to offer in the meantime. Both the Benex200 and the RoximX4 have StVZ0 compliant optics, which means that they can provide plenty of light on the road without causing blinding glare to oncoming traffic and fellow cyclists.  Have a look at the image below to see the firm optical cutoff above the horizon. 

StVZO Ebike LightsStVZO Ebike Light Beams

The Benex200 has a 12-75V input range and features both light and motion sensors for automatic control. You can leave the light plugged in and it will automatically turn on whenever you are riding in the dark, and shut itself off after it is parked still for a while or the sun comes out.

The larger RoximX4 light works over an impressive 6V-85V range, meaning that you can power it from a 6V dyno hub right up to a 72V nominal ebike pack. We have custom wired our Roxim light to include a handle mounted push switch for easy on/off control. 

Both models have been terminated with the DC 5.5x2.1mm barrel jack so that they can plug in directly to a Cycle Analyst or Anderson Tap. While neither option is quite as bright as our Lumenator, they still work great as a primary ebike headlight for almost all road and trail riding during the upcoming winter season.

Posted By Justin Lemire-Elmore

Crystalyte H+ Motors, Statorade for All

September 30, 2016 10:18:00 AM PDT

Aug 2016 Clyte Sea Order UnpackingOur August shipment of Crystalyte hub motors has some nice upgrades, so much so that we're ready to call it the H+ motor series:

  • Solid Aluminum Stator Core, rather than pressed steel. Better heat absorption and less likely to bend during disassembly
  • 0.35mm Stator Laminations for reduced eddie current drag torque, and best of all
  • Injection Hole and fully sealed side plates for Statorade compatibility
 

Statorade Injection of H+ Motors H+ Motor Core Details

That makes our line of Crystalyte direct drive hub motors ripe and ready for high performance applications that can benefit from improved thermal dissipation and efficiency. To select one of these newer motors during checkout, just use the new Statorade Uprade option available on each of the kits.

Fill Port on NSM/SAW MotorsFor the smaller Crysatlyte SAW and NSM motors, as there is no disk brake we've had a small threaded hole put in the side plate that can be closed off with an M3 screw.  So those using the brompton and folding bike kits in hilly conditions can also run the motors longer without overheating by adding a small does of Statorade. 

Posted By Justin Lemire-Elmore

Say What?

July 31, 2016 8:40:53 PM PDT

More details to come later, but we thought you might like a peak at what Justin and some Grin Staff have been burning the midnight oil on for the past several weeks, a project making full use of current and future Grin products.

Complete build details with pictures of the internal parts and construction are on the unicyclist.com forum
http://www.unicyclist.com/forums/showthread.php?t=119436

Justin is currently at the 18th International Unicon event in Spain testing this out among the world's elite unicycle riders, but as a result we've slipped behind in our timeliness with technical support emails in the past few weeks and apologize for all who have been let down by that. We'll get caught up again as soon as possible and hope otherwise you continue to have a great summer of ebike building and riding, and a happy BC Day to boot.

Posted By Justin Lemire-Elmore