pic: 25lb Drivetrain

[asid61]

Originally Posted by cad321

Is there a reason you chose not to use bearing blocks on your drive wheels? Although I haven't built a WCD before, my understanding is that their benefits far outweigh the cons (the only con in this I could see is possibly weight as you're limiting it to 25lbs).

The other cons are cost, size, and time. If I had the gearboxes (and sheet metal brake) I could make this very quickly. It's possible to re-use the bearing blocks for sure, but the "set and forget" method of direct C-C chain is great.
From a machining standpoint, depending on which bearing blocks one is using, this can also be easier to machine than a "regular" WCD with bearing blocks.