On Friday, January 22, 2021 at 8:52:32 PM UTC-5, Snag wrote:
Am I correct in assuming that hooking the windings in
series will convert it to 220 ?

If you replace the neutral with a second ungrounded conductor.

Since this motor is a universal motor , is it speed controllable by varying the voltage ?

Hook up a $15 or $20 dollar AC 110-220V 10000W SCR Motor Speed Controller Volt Regulator to make sure.