Here is something i got from a recent Indiana FIRST Workshop that we held last weekend.......All this information came from Andy Bakers presentation so maybe he can add/explain even more......
GEAR AND SPROCKET MOUNTING
Shaft to gear or sprocket
-Trantorque (for medium to low loads)
-Collar clamp on a split hub
-Drill and tap through on a hub
-Dutchman's pin
-Weld
-NEVER use set screws for this
Gear or sprocket to wheel
-Skyway- pin whell to large shaft, or capture spokes w/ a hub
-Using 3-4 holes, attach to wheel, close to perimeter
