From what I've been able to glean off websites, people seem to quote a range of 3-5V for this motor. Coil resistance of 20 Ohms gives 150-250mA current.
However I've been using Sparkfun's "Big Easy" and limiting the current to 150mA (bottom of its range) - and the motor runs very hot.
So I would be interested in the experiences of others - what kind of voltage/current has worked best?
I will probably be mucking about with these quite a lot since at 20p they are about as cheap as it gets