Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "This Is The World's First Geared CVT and It Will Blow Your Mind - Ratio Zero Transmission" video.

21:15 Finally you mention the need for one way clutches! I think these are the real killer for this design. All one way clutches I know of allow only choosing 2 from the following: - low wear rate - minimal backslash - high torque It seems that this design would need all three at the same time! Other than that, superb design and this video explains the mechanism pretty well.
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@Old_BMWs Wouldn't brake mechanism require friction surfaces and cause lots of wear and power loss?
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@HungrySharkMaster See the mechanism of this thing. The small gears that pull the center one at a time must freewheel in one direction and not rotate into another. This mechanism will not work at all without using one way clutch for each of these small gears. Yes, this limitation would be less problematic for a bicycle. But make no mistake, it's there not because it would be just nice to have, it's there because this mechanism will not work otherwise.
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