Russell wrote:Miuan's suggestion is a good one, just snip one of the shunt wires (assuming there are 2). It's a waste though running around with a 12-FET controller putting out a say 15A.
If there was an OpenSource hardware and firmware controller... I would buy one instead.
Russell wrote:Really though you did buy the wrong kit if all you want is a little assist. The Bafang BPM (shown in your link) is much more powerful than the smaller 250W Bafangs, like the one I use. When you buy a little Bafang kit they include a little controller to go with it.
Maybe I do not want a little assist but a moderate assist. Maybe I will find I am better with an electric motorcycle...
I came from a 250W Cute-85 motor that runs at maximum 38km/h. Now I would like to go up to 44km/h and so maybe I need more 100W (also for wind days), so, 350W. That Bafang BPM seems to be the best that BMSBattery have for what I am looking for.
Russell wrote:Second, you ignored all the warnings about using a front motor on aluminum forks, especailly a powerful one. I run a little "250W" Bafang with a 20A controller with a 12S LiPo battery which peaks at around 950W and don't have a problem even without a torque arm...but I have steel forks.
I totally ignored the existence of torque arms and the reason for their existence. BMSBattery didn't sell them before my accident. I came from a 180W motor and after from the Cute-85 250W motor, all of the material I bough on BMSBattery on 2 years ago, 1 year ago and now few weeks ago. I always used the same bicycle with all this motors.
Russell wrote:So yeah you can de-rate the set-up you have or sell the kit and buy a lighter less powerful one.
I think I will de-rate. I bought now from BMSBattery the torque arms and KU93 controller. I am not really sure but later I can even change from the Bafang 500W front to rear motor.
I were doing with the Cute-85 250W motor 25km + 25km with a battery charge/day. Now I would like to do the same and sometimes even go behond to 33km + 33km, that's why I am looking to a bit more power/speed.