[MattC9]

1.) Do you know how you will mount the gear boxes or transmissions?
2.) Do you plan on tensioning the chain? If so how?
3.) how do you plan to assemble the pieces? welds? rivets? screw?
4.) I like how you planned out the chain paths
5.) You might be able to make the side plates shorter to lose weight.

But looking good so far keep on working, this is how you truly get good at CAD!!