pic: 2.5in gearbox

[Mechvet]

Looks good so far!

What led to your choice of 2.5" colsons?

What gears are you using? I ask this because at smaller tooth counts for a more compact gearbox, you *might* be approaching the limit for some materials, such as aluminum. (note: I have done zero calculations for a smaller box. I'd suggest running some lewis gear numbers to see if you're inside the gear's envelope)

Am I correct in assuming that the two sprockets inside the gearbox mean this is for a WCD setup? If that's the case, how are you planning to mate this gearbox to the frame rail?