SinkMaster 401 Turns out to be DC Motor

[coldspot]

The GarbageDisposal Motor turned out to be a DC motor!!!

While I'm still trying to get it apart, (Sat unused for many years)

After working it over with a wire brush on the

incoming end, I finally got to see that it wasn't going

to come apart any further there. So tearing back into

Electrical end, I saw that the AC in wires ran into a

VERY tiny little square bridge rec. (Smallest I've ever seen,

this thing could probebly sit on a dime)!!!

IT came apart a bit more to show that it has brushes, and a

two magnet can, (might be multi pole magnets).

A bit more grinding today might show the trick to the teardown,

but I'll post more as info comes up.

[coldspot]

The Incoming end is the end to take apart

when dissambling one of these.

After drilling deep enough into the shaft

the spinning "Cutter" plate did come off to

show that the thing has threads on the shaft.

Now just to spend a few hours hacksawing the

end plate that holds the bushings into something usable.

I did set the Bridge rec on a dime and it's a bit larger than that,

but on a penny, the angled edge and square edges, did fit.

Still didn't test the magnets for multi-pole or single pole yet.

[Jerry]

Hi Coldspot.

This PM motor is the second most common garbage disosal motor. Most common is the AC induction (Garbogen).

The PM motor is very simular to a tredmill motor accept bushings rather then bearing, normaly less HP and a crapy shaft to try to conect anything to.

The small fullwave bridge diode is what I used on my last 8" dual rotor alt. Most of these bridges are rated around 6 amps. I used one bridge per coil. 9X6 for 54 amps of rectifier and there only about 1/2" square. They were also free.

This PM woun't make a very good wind genny but its a good doaner for its curved ceramic magnets. It has 2 magnets, one has N on its face the other has S on its face.

They can be cut, lengthwise will give you 2N and 2S for a smal 4 pole motor conversion. Low power but fun and free.

These would posably make a 4 magnet for a 6 pole 6 slot box fan to 3 phase conversion?

 I soak themn in a can of carboirater cleaner for a few days then gently poe them out.

                        JK TAS Jerry

[coldspot]

Thanks Jerry

Yes it's a bushing motor

Tested with hand drill unloaded

400. RPM = 11.6VDC
     
1600. RPM = 46.4VDC