Yup, it's an SCR based controller.
But I'm not looking to use the controller as a motor controller
. I was looking to use it as a bench variable power supply / small battery charger only.
The motor, on the other hand... I can think of a few little projects I might use it for as either a motor or generator.
I'm pretty sure the motor tag said .4 hp. I'll double check and get back to you.
The treadmill is a "Weslo cadence 815" WCTL8159
EDIT: another cool thing is there was a good wiring schematic taped inside the cover over the motor/controller/guts area.