Automotive Generator as a motor

B

BSFlyBoy

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I recently purchased a Jet mill, JVM830, that has an interesting modification. The original motor has been replaced with an old Jeep generator. The generator is and Auto-Lite labelled Generator 24 Volt D.C. with operational speed of 1750 to 8000. The power supply is missing, but the connector is an 8 spade male connector with two rows of 4 spades.
Anyone ever hear of such a thing or have a clue how to wire it? Also looking for the best alternative as that might be a lot easier to figure out.

Thanks
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Not practical unless you want to run on batteries
or build a hefty hi-current, low voltage supply
Spare ac/dc welder hanging around? That's about the size of it
 
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They were fairly common on older garden tractors They were known as a starter/generator They were connected to the crankshaft by a belt they were energized by the key as a starter When the engine came up to speed they acted as a generator

They weren’t very efficient and since they used bushings on the shaft they didn’t last long before needing new ones
 
That could be done... It'd be some cool bragging rights about redneck ingenuity... The first thing I see is that you've got an 25 amp, 24 volt generator. Best case scenario that's 0.8 of a horsepower. Being as this was wound as a generator only, I'm not convinced that the efficiency in going backwards will be maintained, so probably less, although I don't know any specs for certain on that particular specimen. But a wire (or winding) that's rated at 25 amps in one direction, will have the SAME rating in the other direction, so the volts/amps is not the expected outcome, but rather the absolute maximum conceivable outcome. I don't know that machine, and I am NOT a fan of hot rod motors to squeese more out of a machine than it's built for, but I think ("think") you'd be hurt for that, and your mill really wants more than that.

To run that you're going to need a 24 volt power supply capable of maintaining steady voltage at those amps. Or more likely (from a cost perspective) a couple of group 31 batteries to "buffer' a less capable power supply or two. Either way I'd bet you're 600 bucks in before you can even check to see if it's gonna work....

I love an adventure, but I think I'd investigate the replacement option first, as it's (probably) the simplest, most practical and most cost effective solution.
 
Yeah, I don't see any advantage to using that motor, I'd just replace it.
 
Chinesium motors and VFD’s are inexpensive and easy to get.
If you do a little homework, I’ll bet you can do a retrofit for about $375
 
I wonder if permanent magnet motors will become more common in the future.
 
Ended up ordering the same motor and controller that is in my Nova Voyager drill press. Should be in next week. If anyone has the original motor mounting plate for a JVM830, I'd love to buy it from you!
 
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