The alloy wheel is actually fairly flogged out where the key engages when assembled. I expect the action of the quick forward/reverse changeover is fairly harsh on the drive components.
I was actually thinking of putting a key in and filling either side with arc weld and then grinding excess back. This still doesn't solve the flogged out alloy wheel hub issue. Another thought is to leave the key out and drill two holes through the wheel hub to pump some epoxy liquid steel in. If I get a flat I'll just have to fix it on the rim.
What do you think of a through drilled pin?
