The Outrunner part of the motor will act like a spur gear and the shaft will run inside the motor to the other side. This is basically bolting the motor to the diff case which seems to benefit outrunner style motors. When will the final unit be built? It looks very easy, but I know there will be challenges with it. I think a new diff case will have to be built for quick access in case things needs to get changed. I also think a larger bearing would be nice to support the outrunner case in place better. Things can twist and bit and jumps will put a high load on it as well.
Maybe I got it all wrong, but it was worth a try
. Awesome idea to exploit the torque available in outrunners.