Some photos of the sprocket drive system are posted in the gallery.
http://www.chiefdelphi.com/forums/pi...DESC&sort=date
This prototype device was constructed to illustrate how a sprocket system could be built from the kit. It is not an optimum design.
The manufactured pieces include:
1. duplicating the two flat clamping plates in the kit (which can be done by drilling flat plates)
2. delrin spaces (washers) between the sprocket and inner bearing and between the outer bearing and the wheel
3. HDPE mounted on 2x4 pieces for the skid plates.
I'm happy to answer questions about the prototype. Feel free to email me.