I am planning on getting this http://www.goldmine-elec-products.com/prodinfo.asp?number=G17806
but I realize that the shaft is 0.377 In diameter.
How would you connect this to a wheel with say a 0.3 In internal diameter hole?
where do I get the hardware to connect these?
for a difference that marginal, I'd probably shave down the motor shaft.
what about this wheel
http://www.goldmine-elec-products.com/prodinfo.asp?number=G15594
It's far easier (IMO) to go from a larger shaft into a smaller hole than the other way around, especially if the smaller hole is in plastic. Boring out the hole with a drill press (hand drills or Dremel tool NOT recommended) isn't that hard, and for low speed things like wheels, a tiny bit off center won't matter much.
Going the other way, the most reasonable thing to do is to shape a piece on a lathe that has the right OD and the right ID to fit over the motor shaft and inside the wheel hole.
Mike
arduinopi:
what about this wheel
http://www.goldmine-elec-products.com/prodinfo.asp?number=G15594
Realize that wheel has a press-fit (IIRC) bushing on it - so you would need some way to drive that out (you could drift it out with a punch - maybe, or definitely with an arbor press) before resizing it.
I would, instead, look to see if you can get some inexpensive wheels from a hardware store (replacements for lawnmowers, for instance), so you can measure their hubs for sizing. Get it oversized, then find a nylon bushing (or series of bushings) that will nest and fit inside the hub. If you can't find an "exact" fit, you'll have to drill it out (and perhaps shim it up). Epoxy it all together, then drill a cross-hole thru the hub. Mount on the motor shaft, and mark the hole location, then bore the cross hole on the shaft of the motor. Mount the wheel, and secure with a cotter pin or a bolt/nut combo (with a locknut or loktite).