RE: RC Electric Motor needed for non rc sciencel project?
"The other part is the control system to modulate the pwm signals.
Thanks"
That's actually fairly easy. In the R/C hobby market, you will find servo testers, and even digital readouts.
The readouts show between 1000 and 2000 for the "standard" range of servo travel, or the pulse with in ms.
Jomar (Electronic Model Systems) is one source.
The servo tester plus the usual ESC with a built in BEC and an appropriate battery plus the motor
can get the job done. A four pound disk has a lot of inertia to overcome with the usual model A/C motors.
This would require an extremely slow spinup and spindown, as well as support bearings.