Automotive Generator as a motor

[BSFlyBoy]

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

 

[markba633csi]

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

 

[projectnut]

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

 

[Jake M]

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.

 

[Eddyde]

Yeah, I don't see any advantage to using that motor, I'd just replace it.

 

[Ulma Doctor]

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

 

[m1kemex]

I wonder if permanent magnet motors will become more common in the future.

 

[Canus]

Might want to consider a treadmill motor. Check out DazeCars on YouTube.

 

[BSFlyBoy]

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!