It looks like 70% of the respondents didn't RTFA.
The whole point here is to eliminate sliding friction and be more efficient - I would've thought Ceramicspeed's name would alert folks to that...
I like the idea of continuous ridges on the 'cassette' - hard to imagine exactly how that would look though... Obviously there would need to be discrete locations for the driver where new ridges appear and they're evenly spaced, and with some of the ridges being continuous, power could be maintained during a shift - but the shifting would need to be electronic, very rapid, and controlled extremely precisely...
Perhaps some sort of constant-engagement system like a car's gearbox? But then there's a weight and efficiency cost...
Last edited by Kimmo; 07-08-18 at 09:02 PM.