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Gday Matt
You currently have a stepper, so will need a stepper driver of some sort to run it. These can be made to run at any speed you want ( if the motor is capoable of it ) using a PIC type driver.
The main thing is to see how fast it is going to need to run
ie the motor you list has a 150:1 reduction gearbox built in already
so with a 3:1 reduction on top of that, you have a 450:1 reduction driving a 360 tooth wormwheel, so its not going to go real fast at the output axle :-)
Hurst do sell different motors that you just apply voltage to and they run at a set speed, but they are a different model type.
IIRC, the early Meades used these, and you needed to buy a specific version, as they were pre wired to go CW or CCW at a set speed.
Andrew
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