Removing a motor starting capacitor from an old 1 HP Craftsman electric motor

[mrchuck]

I bought a 3/4 hp bench grinder, Asian type, 1/2 inch shaft cheap because it was MISSING the capacitor that normally fits inside the hollow area of cast iron base.
I took it to our local electric motor repair place here, and they brought out a very large capacitor that was way too big for under the base.
So,,,I mounted the capacitor behind the grinder on a plywood base for the motor, and ran the wires up inside the motor.
It now starts instantly, and has as much wheel power that I can stand without danger.
So, if you have to you can mount a capacitor outside,, instead of trying to cram it all up inside the base of the grinder motor.

[rusty]

The only weird thing is....did it blow a fuse?
If the winding resistance is in fact that low, it should have blown the fuse when plugged in.....
It won't hum if the motor thermal protector is tripped, or broken either...
And humming doesn't always mean the capacator...
(A motor with seized bearings will hum, as will a motor with a bad start/shading winding, or a open starting switch.

But a motor that does nothing...something isn't connected to something somewhere...
Power cord? on/off switch? safety's?

[rusty]

PS: I'm sorta with scott on lightweight table saws, we have 2 in the shop, they are both broken, the plastic bases are horrid, I suppose for 1/4 masonite they would work tho, I wouldn't pay much for one to use for anything else after using the ones we had tho...

[Wrenchmensch]

Rusty:

All circuits were tested, including wall outlets, extension cords, table and motor switches.  All checked out.  The only down system were the windings. The motor was irrecoverable within a reasonable interpretation of that term.

Bob

[scottg]

  This is an old school belt drive saw?  If it is, there is still nothing better.
 Those modern saws are little more than a lightweight skillsaw bolted upside down to the bottom of an aluminum table!
 
  Anyway, saw motors are easy to get.
  Look to the trunion.  This is what the saw arbor spins in and what moves the arbor through the angles.
   Sometimes you see a big huge table and a flyweight trunion.   Yuck!
  Sometimes you see just the opposite. Not such a big table but a trunion that weighs 47 pounds!! 
      If you have one of those, another motor is easy to find, and worth it! 
     yours Scott

[Wrenchmensch]

Thanks, Scott!