[Yellowbird911]

I would like to add an electric assist to my car. It is a BMW 528I and has the room to add a belt driven motor. This motor would run to the front crank. I have the skills and equipment to fabricate the set up. Will be for assist only with a 48 volt lead acid pack in the rear to start, will go lithium later if it works well. I only drive about 20 mile a day so range should not be a problem. Wish to link the throttle and the ESC together so the car will drive with standard controls, no seperate throttles. Problem is I am not sure how to control current. Would like to set it up so that when I accelerate the motor will apply up to a certain current, say around 150 amps. However this would be applied with in the first say 10% of throttle then stay at that current level up to full throttle. Anyone have any ideas on how to do this. Thanks for your time and assistant.