pic: Butterfly Drive V2

[GeeTwo]

Originally Posted by GeeTwo

• Be sure that the Colson ends of the modules, when faced with a lateral force, will contact the side walls of the tube away from the rotating axle, and preferably either between the wheels or above the green spacer/barrel nut where the tube is strongest.

Originally Posted by KohKohPuffs

• So the modules need to be somewhat the same width of the inside width of the boxtubing? I guess that makes sense. I might have solved the shaft bending, but the plates might take damage after one of those traction side impacts, so doing so would reduce the bend

If your modules are strong enough to not have to touch the sides, that's great. I was just suggesting that when/if they make contact, it should be at a point of strength on both pieces, and should not cause the axle to rub, which would cause extra wear and loss of drive force.

Originally Posted by KohKohPuffs

• Angle of rotation, I don't have exact numbers at the moment I'm writing this, but it's really easy to calculate using trig..

I don't have any CAD software on my computer, so all I can do here is guess from the perspective render.