Re: [CAD_CAM_EDM_DRO] tachogenerator

bondeoca wrote:

> Hello All
> I have picked up a G E tachogenerator hoping to use it as a spindle
> drive motor for my mill.
> It is a pm rated at 100 volts per 1000 rpm.It is apprx . 7 inches in
> dia. and 10 inches long,has
> four brushes 180 degree spacing. When I apply 100 volts it
> rotates ,but with a 2 inch pulley
> on the shaft I can stop it by hand a turn it in the opposite direction.
> So my question is , is there something I can easily do to this motor
> to increase its torque?
> I also notice the magnets for being quite large , do not seem very
> strong.
>

It is NOT a motor! It is a measuring instrument, designed to accurately
measure the speed of some mechanism.
Since all electrical machines are reversible, it is similar to a motor,
but it is optimized all wrong for use AS a motor.
Other than replacing the magnets and windings, I think it will be
impossible to make it function well as a motor.

Jon