Originally Posted by AZjeff
That's a pretty amazing outside the box design. I can think of 2 possible problems, in 1st gear, the biggest, if the rider was really putting some force into it the sprocket would want to flex away from the 1 bearing in contact with it. The other problem would be wear with one bearing transmitting power onto one tooth. Normal chain/sprocket drivetrain spreads the force across all teeth wrapped by the chain. Still, fresh thinking that hopefully will be further developed. Thanks for sharing this.
Yup, that's what I was thinking as well, plus this prototype does not have the shifting mechanism. The way it is set up now, I don't see it being able to shift easily while putting down torque to the wheels, Mid gear changes going up a hill look pretty much impossible with this setup.