Can I run a novak ballistic motor with a sidewinder sct speed control? Thanks

sure, it just won't be sensored.

So not being sensored.How does that effect the motor?

It depends on the motor. A 4.5T will run like many other sensorless motors, but the resistance of a 17.5T will cause it to run very very poorly, if at all without the sensors. I would consider anything 10.5T and faster to be usable, but not smooth.