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Thanks Trying to do a electric kart for the cheap. I have the parts to make a controller just don't want to drop $400 on a motor to get 15hp. Or I will find a beat up 4stroke dirt bike to get an engine. Also as far the alternator I would just stick a small 25aH batt on the kart with no...

Not to bring up a dead thread but..... An alternator will draw up to 5 hp per 100 amps of current draw you have. So 1 hp is just above 700w BUT that alt is 60% efficient if your lucky. So Lets say your kart needs 500w to keep everything working. You are sucking almost 1.5hp away. So if you take...