hey
a few more details: it'll be a remotely actuated device, and probably can't have a voltage greater than about 9V.
the motor will most probably be just a streaight DC one, using a worm gear to slow it down and up the torque, and then some sort of gearing mechanism to transfer the power.
i'm looking at using remote control car tx/rx with a range of about 2 metres.
sorry i can't be more specific, but it's something pretty special and i don't really want anyone to know exactly what i'm doing just yet.
thanks
zac
**Edit**
I want to use two signals at different frequencies, one to power the motor forwards, the other backwards. I have tried to think about how I can do this using filters, and I can, but that way I can't tell the motor to run for a caertain amount of time.