Hi all, my project is not a ev conversion persay, but this forum seems to be the place where I might find some answers.I have a 48 volt sepex golf cart I have converted to lithium ion using leaf cells. I have not beeen able to locate any information concerning the stock motor other than it is a GE 3.2 hp at 3060rpm. I have also installed a alltrax xct72500 controller good for up to 80 volts which i plan on getting to eventually. Can anybody tell me what the insulation is good for in this motor or a general guideline for brushed dc motors I know the lowest rating for a nema motor is 105c I would think it would be good for at least that but I dont know. The mechanical rpm limit i am told is 6000 rpm, does that sound about right and is their any way to increase that? Is the most heat produced in the commutator and the heat path mainly out through shaft and bearing? Or is the whole armeture approximately the same temperature?