Sorry if this is the wrong group, but its as close to the right one I suspect I can find.
I'm an astronomer, and I am building a tracking system for my camera. The 1 rpm motor I have runs the wrong way, and I need to attach a pair of gears to simply reverse the direction of the motor.
Both shafts are 8mm dia, one is a piece of M8 threaded rod, the other is the motor shaft, which has a half flattened spine.
I need a pair of (maybe brass) gears to fit these two shafts (by grub screw). Must have a fairly high number of teeth to ensure smooth running (I think), and OD should be around 4cm.
Any pointers, suggestions, offers ?? (I am waiting for HPC to reply)
TIA
David Harris Telford Please demunge g8ina((at))blueyonder(dot)co(dot)uk to reply.