littlebear72_91 wrote:Bob I was trying to identify which controller I have to see if I could go to 36 volts and how many amps. Looks like the controller can do 36 volts and at least 20 amps
Got ya.....Not trying to be a PITA but your numbers don't work out quite right. Why are you thinking you would get 36v 20a? That's only 720w and if you have a stock Currie controller (24v 35a) the stock controller would supply 840w. I'm thinking your stock controller running 36v would deliver a full 35a for 1260w. Otherwise, your taking a step backward.
Actually ... as demonstrated by the ebikes.ca simulator, 36V 20A is a fabulous performance increase over the 24V 35A controller.
Performance from ~9mph and up is greatly increased, without the increase in damaging heat at lower speeds.
Also, the lower amperage controller produces a torque curve that produces the greatest motor output at near to top speed, rather than at mid speed.
Instead of the motor losing power above 10 mph, power continues to increase right past 20 mph.
Of course, you could produce the exact same power profile with a larger controller ... it just requires throttle restraint at lower speeds.