Centering the flywheel on the coupler should probably be done at a machine shop but a dial gauge can be used in a pinch.

After getting it centered a little epoxy was used to hold it in place temporarily then the hub was welded to the flywheel. Again I find myself wanting that 220v welder.


Here the motor, coupler, adapter plate and transmission all test fitted before welding the two sides of the adapter plate together. A single battery can be wired directly to the motor to get it to spin. Seems to spin the tranny pretty well :)

Btw, I have LOTS of batteries now...