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Old 03-13-2008, 06:29 PM   #6 (permalink)
frodus
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for most cars/small trucks, you need AT LEAST a 100lb motor in order to have the current carrying capability as well as the heat dissipation capability. Even at 100lbs, it may not move a car very well if the car is heavy. You never said what type of car it was.

a 24V 25lb motor will smoke in 5 minutes if you try to drive ANYTHING over about 300lbs.

No load amps is 45A, FLA is 150... at 17,000RPM!!!!!... so even if you COULD use it, 24V results in 17000 rpm. I bet this motor has almost NO torque. Plus, the gearbox you'd need to convert 17000 down to ~3-4000 to match the transmission would cost more than it would to get the right motor...

The main thing I'd be concerned with, is the fact that it says intermittent duty. Even if you got a torque curve for this, its just not suitable for a car.

EV's are not cheap, there's a reason. You can't just use a cheap motor and a cheap controller, you need current carrying capability, and many times, thats going to cost you.

Start looking at advanced DC motors and curtis or alltrax controllers. You need to start at the bottom before buying parts. You need to get rough drag/weight its got, and what speed you want to go. Then you can calculate the motor torque and HP needed to get you there. THEN you choose a motor, and a matching controller. And parallel to this, you have to decide what voltage you want to run (72, 96, 120, 144)... and how much battery weight you'll have, and how much distance you want (more lead = more range, voltage = speed, torque = amps).... Sounds like you haven't done alot of background research.

go here to see what I mean:
http://www.geocities.com/CapeCanaver...79/evcalc.html
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Travis Gintz
1986 Honda Electric VFR
www.evfr.net
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