Quote:
Originally Posted by Tom Line
You are correct. I use the motor curve data from here:
http://www.chiefdelphi.com/media/papers/download/2593
Indeed, I try to do my math to confirm that I will get what I need without popping breakers. In addition, I've seen even a fresh battery drop voltage when you are pulling power to the drive train: doing your calculations at 12 volts may result in a performance problem in the field. Just our experience though, perhaps others differ.
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For systems where the voltage variation would have an appreciable effect on performance, we run all math scaled to 10V (just linearly scale down the free speed and stall torque).