[Ryan Dognaux]

Our team is looking at making a gear drive as well and I had a few questions having never built one.

Dustin stated in an earlier post that you can use the 1/2 inch tubing that Vex Pro sells and run 1/2 inch hex broached gears on it with no issues. Can anyone else verify this? It'd be nice if we didn't have to shave a few thousandths off the tubing to have the gears spinning with little to no resistance due to friction.

Using this setup would mean running 1/4 inch bolts through the tubing. Does anyone have recommendations on the type of fastener to use & what hardness grade? I've never ran anything smaller than a 1/2 inch bolt on a drive shaft so I'm curious what others have used.

Thanks for posting these designs, I know I've learned a lot from reading through these threads.