Messing around lacing two rims together...

[Wildcat]

The forces are much too great for epoxy. Just 15 psi in the tubes pulled the rims apart.

 

[Fv2]

The forces are much too great for epoxy. Just 15 psi in the tubes pulled the rims apart.

I think when Luke did his he riveted them together.

On my attempt, I wanted a belt drive between the tires. So I welded steel between the rims to act as a pulley.

 

[Wildcat]

That's my next plan, rivets or nuts/bolts using supports with 3 rims. Heavy but bulletproof.