"John Hall" wrote: (clip) 1/8 HP, 2.5 A, 1 phase, 110 v. 1725 RPM (clip)
^^^^^^^^^^^^^^^^^
1725 is the "slip speed" of an induction motor whose field is going 1800
RPM. If you try to slow the motor down by reducing the voltage it will slow
down a little, maybe stall, overheat and probably burn out.