The outer can of the motor turns, which is directly connected to the ball carrier. This is the part that would normally be the spur gear in a conventional set up. So the motor drives the balls, not either of the outdrives. The outdrives are free to rotate separately from each other and from the motor can and ball carrier.
Think of it just like a conventional Mardave or pan car ball diff, but the spur gear is the end bell of an independently spinning motor.
I think I might have a solution to my current problem, some components are on order and I will update the thread when they turn up and I have made a couple more parts. Should be interesting...
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