penneyma79
Pebble Pounder
Yeh good idea I was starting to think along those lines, I just wasn't sure how strong the joint would be.
Can't hurt to try though. I'll have to see what brass tube I've got lying around :mrgreen: The spare axles from Banggood are only £5 each so I've ordered a couple of sets 8)
For now it has gone back together with a ball bearing behind the pinion and a 0.5mm shim on the driveshaft side to remove slop. I added bearings in the hubs and another shim to keep the diff gear steady. Axles run with much less slop now.
I also took the opportunity to shorten the links down to their minimum length. This meant I had to move the shock tops back one hole to regain some movement. It is now 135mm wheelbase - 9mm less than out of the box which should give the drive shafts a bit of a break.
This might be a stretch, and I did NOT search threads yet- Has anyone tried casting their own gears and/or axles from resin of some sort? I know a lot of resins alone prob wont hold up long, but there are some that might. Axles I assume could be made composite by casting the ends right onto a hollow tube, could be a way to lengthen drive shafts too, would have to find a way to add mechanical adhesion between resin and whatever you use as a tube. JB weld is super strong, I'm curious with a decent pour, meaning no air bubbles, if all teeth would show up and not tear off under stress.
I am considering trying a ring and pinion in a lesser quality rc that is rebuild able to test this theory. By pressing ring into modeling clay, which is pretty hard when its cold, you should get good enough detail to accomplish a good one part mold. thoughts?