Cadence drive transmission
In addition to my RBS, I’m also working on a transmission that would have a constant cadence. The pedaling effort would wind a constant force spring and the spring force would drive the bike. It would be continuously variable and automatic shifting. The weight should be similar to a derailer system.
The ratio would only be 2:1 so it is not intended to compete with a 21 speed derailer setup. But it would be a nice step up over a fixed gear, or it could replace the crank gears and be used in conjunction with shifting hub gears. This would smooth out the cadence and require fewer gear shifts.
I would like to hear your thoughts as to whether I should pursue this?