I have a 2.5" diameter RA shaft. Based on my torque requirements and telescope size, I figured I will be needing a 15" worm wheel RA drive setup. I found this link on eBay (looks like Ed Byers product) but this doesn't seem to have any clutch available.
I was thinking of turning down a few inches length of the 2.5" shaft to 2" which takes care of the bore requirements of the worm wheel. However, I am not sure of the mounting of the worm wheel on the shaft. How will the worm wheel hold on to the shaft with no slippage of any kind? It is probably a very basic question but I have no experience in these areas.
Does the ad on eBay assume that the buyer will have the needed clutch which can latch on to the those mounting holes seen on the worm wheel?
Thanks for your inputs in advance.