Hey you'd think with the launch of the Satiator we'd take a little break and relax for the holidays, but not at all.

Field Oriented BAC500+ Controllers

Many of our custom EV projects over the past few years have made use of an advanced Field Oriented Motor Controller from ASI (Accelerated Systems Inc.) of Toronto, rather than the more generic imported Infineon devices. We've talked about these before, and have now made a small pilot batch generally available to the enterprising public.

Some Evolution of the BAC500+ Field Oriented Controller Enclosure

Made almost 100% in Canada, this BAC500+ controller in a hardcoat anodized CNC'd enclosure can measurably increase your motor efficiency and torque output at low speeds, run sensorless with even the highest RPM motors, use field weakening to increase the top-end speed, and remove the motor buzz from even noisiest of hubs.

Dyno Graph of Improved Low End Torque and Efficiency Dyno Graph at 3 Different Levels of Field Weakening Plot of H3525 Unloaded Motor RPM v Field Weakening Current
     

For more information, have a look the descriptions and test results in the ES forum thread. We are down to single digit quantities remaining for those who who are tech savvy and want to taste the future of ebike control.

Cycle Stoking a Yuba

On another front, we renamed the Right Side Drive Stokemonkey to the Cycle Stoker several months back, and are now pilot testing a new model custom fit for the Yuba Mundo cargo bikes. Mid-drives like the Bafang BBS02 have made the rounds lately but this stands apart:

Cycle Stoker Prototype on a Yuba Mundo

  • Patterson 2-speed crankset, gives the equivalent of a 62T chainring for unprecedented high speed gear ratios even at a comfortable pedal cadence
  • Provides true Proportional Torque Assistance with all the custom settings of a V3 Cycle Analyst to dial in the desired performance
  • Uses of standard bicycle chain and bicycle components for the entire drive transmission, no special proprietary gears in the mix. 
 

If you have a Yuba Mundo bike and like being an early product tester to help work through any early release kinks, then please be in touch as we should have a half dozen kits ready by early January.

Grin Staff wishing you a Merry Christmas, (you won't find us in matching uniform like this too often.)

Finally, we at team Grin want to wish you all a Merry Christmas. We'll generally stay open with reduced staffing during the holiday but should still keep up on all the online orders. And in case you didn't see it, the -20% Satiator Promo for loyal customers will continue until the end of the December if you want to treat yourself to a little gift.