Originally Posted by BSV (Post 1541671)

Oh, this is a nice idea, too. Backup plan if the hex hubs don't turn up. We'll find out this evening.

We unfortunately do not have any lathe capabilities (yet. I am hoping to change this if we can ever attract any real mentors into the fold.)

Originally Posted by GCarnes (Post 1541674)

Last year my team extended the versaplanetary output shafts by threading another piece of thunderhex shaft onto the end and using a hex collar over the seam to keep it all together. Worked great and held up the whole season on both sides of our elevator.

Originally Posted by 3175student17 (Post 1542134)

You could get the hex coupler from The Robot Space:

http://www.therobotspace.com/Product...e=vex-217-4008

Originally Posted by BSV (Post 1541524)

Pardon the stupid question in advance. Almost-lone (and non-engineering) mentor trying to help kids figure stuff out, here... :)

We have some Vex versaplanetary gearboxes attached to a couple of bag motors to drive two mechanisms. They have 1/2" hex shaft outputs, and we wanted to connect them to a longer shaft that stretches across the body of the robot.

However, hex shaft couplers are totally out of stock at Vex (as is everything else). Is there some other way to connect the shafts, or someplace else to order a shaft coupler?

Feeling really dumb, here. Thanks for any help.