I'd be interested to see how you could design a chain to handle more torque in one direction than another. Tension, is just tension, right?
The gear faces can't be assembled "incorrectly". The only things I would worry about are:
1) Keeping chains and gears as "sets" (Since they have worn together.)
2) Keeping the orientation of the chain the same (Always the same side facing rearward, for example. The same worn together issue.)
I'd have to look at my sets to see if there is a special link on the chain to indicate front/rear.
Last edited by 98IntrepidTan; 04-26-2014 at 06:19 AM.