[Jared]

Looks really cool! I love the octagon design.

A few questions/comments:
How do you remove the transmission?
What type of bearing blocks are you using (if any)?

If you're not direct driving a wheel, have you considered the 3 CIM ball shifter? You may be able to get the extra reduction stage between the output shaft and the wheel.

I'd be careful with that snap ring groove between the frame and the wheel. You generally want to avoid these where the shaft is transmitting torque.