pic: West coast drive design

[42!]

Originally Posted by Hawiian Cadder

I was thinking more about the bearing for the middle wheel and gearbox.
if you are using flange bearings (which you have to with walls that thing) and take a hard side hit, have you ever had problems with the flange punching into the tube wall?

adding a bearing block, with holes rather than slots, could help to minimize the risk of this happening.

Excellent point, I hadn't considered that. And yes the bearing are flanged 1/2 inch hex bearings from Andymark, on a different note the gearboxes as they are shown in this have no protective covering around the gears, I've seen a couple teams do this (notably 254) and it saves some weight on the gearbox, Does anyone know any of the advantages or disadvantages this has?