[Mentor's note: two threads on the same topic have been merged] I live here in Stephenville, TX and currently going to Tarleton for Civil engineering. A bit rusty and new to electrical components. But anyways, here in town lawnmower racing is kind of a big event. Many of us have 600cc crotch rocket motors on them, and they are very fast. I have one currently built I’ve been racing for years. Now i have been trying to convince myself to build an 4x4 model so I get better traction taking off. I have been wanting to build a electric driven one for a while and have been doing a ton of research until I found this site. Now I’m not for sure what all I would need to start this build, and I have a ton of questions. As in what size motor and phase motor to use, what electric speed controller would be best, do I need a certain battery or will the yellow top optimas be okay to use? Basically this is what I have so far. A 15hp 3 phase motor, 1735 rpm, 60 hz. Ill post a pic of it below. Now will this be enough power to move me in a light frame at a fast enough speed? We usually go about 100-125 ft drag strip on dirt. So I would be probably putting the motor in the middle with two sprockets and a chain to the front and back drive shaft. But basically what I’m asking is where would I start? 1. Can I even use this motor with car battery’s. 2. Is 15hp enough to move at a considerable speed?. 3. What kind (if any) converters, resisters, ie. other parts would you think i would need to assemble to make something like this. Any advise is welcome!!!