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Big Electric Car Motor, Small Conversion

by Patrick L.

BIG electric car motor, no batteries (unlicensed driver)

BIG electric car motor, no batteries (unlicensed driver)

I started an EV conversion project with an old Lincoln SA-200 DC generator from a welding machine.
Before investing more money into it, do you think this will work? I tested the motor on 48 volt and it runs good (no load). Can I use it for regenerative braking?

Hi, Patrick -
Jim Husted from Hi-Torque Electric says:

"Way too much motor. Where do you put the batteries?
The most common mistake people tend to make is put in too SMALL a motor for their conversion; and the second most common mistake? Too LARGE a motor. It’s a little like Goldilocks; you want it just right. 8^)

Everyone is battery limited by definition, so you don’t want to carry more weight than is needed as it could be used for battery weight, or just a lighter, more economically running conversion.

As for re-gen, it’s got some nice attributes, but the most I’ve ever heard of (reliably) is about 10% recovery in energy. This would equate to 22 to 44 miles in range from a 20 to 40 mile conversion. There’s more complexity and costs to do this so each must weigh their own needs.

I would not suggest using a brushed series wound DC motor for re-gen as brush arcing will occur."

- Jim

P.S. from Lynne: About Jim Husted...

He's with a company called Hi-Torque Electric; if you've been around EV-land for long you've already heard of him; he's been building and repairing EV motors since before you were born: )

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by: Anonymous


my idea
by: Anonymous

what if you try a alternator to recharge it?

good luck
by: Anonymous

rite, pumping out amps... so basically, your not looking for a car that stores a huge amount of energy, your trying to build a vehicle that will charge a crap load and only need to exert it's self a little to move... that might work, but it's rather un orthodox. good luck to you.. that thing looks like it could pull a house if it wanted to. hope u don't blow the guts out of the transmission, remember electric motors achieve max torque at zero RPM, which means if u tromp on the gas u mite not go anywhere but the garage...

by: Anonymous

My dad had a Lincoln SA-200. He was a pipe fitter and had it in the back of a Ford F-250. He had about 100 foot of leads so could weld a ways away from the truck if he needed to.

As far as working in an electric car, I would think it would have lots of power, but it's also heavy.

Anyway, interesting project, good luck with it.

not that big
by: Patrick L.

I know my motor looks a bit overkill but, I'm not looking for top distance, I'm looking for top acceleration. If you take a look at the White Zomby, 2 motors back to back, is perfect for the car's intended use.

Also, this motor does not arc at the brushes, remember it use to be a welder.

It was designed for pumping out amps.

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