pic: 499 Prototype drivetrain final layout

[Andrew Schuetze]

The center axle is 0.125" lower and not adjustable. The outside axles have 1" slots which will allow for chain tensioning. The chain will be on the wheel side as there is not room between the transmission and frame rail. A universal hub will drive the center wheel and sprockets attached to the wheel or a second hub will drive the outer wheels via attached sprockets. The outer axles are dead axles which saves me bearing mounts on the saddles. The use of #25 chain is due to weight considerations. I'm told by other posters in a seperate thread that teams have been successful with #25 as long as tension is dealt with appropriately. If I can get some 1020 in the shop within a week or so, I will adjust the saddle widths to the smaller profile which will drop a few pounds and then we won't have to worry about weight as much and can use #35 chain.