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?
Posts by Kraftzion
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Hey thanks for the info, It is hard to come by on anything golf cart related. Is there any other thermal limits in a brushed dc motor other than insulation value? I have tried to dig up a data sheet and no go. The motor tag or lack thereof only lists hp, the rpm I had to find on the web. And that is pretty much all the information that you can find on a motor of this type. My research indicates that sepex and shunt mean the same thing is this true?
Thanks again
Russ
Thanks again
Russ
1 - 3 of 6 Posts
