Practical limit for number of rear cogs in the future?

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11-06-17, 01:23 PM

#126

SethAZ

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Quote:

Originally Posted by ThermionicScott

Just as there was more than one way to implement a derailleur, remember that there are many ways to implement a CVT. I think Timothy is on the right track, at some point discrete cogs will give way to those conical pulleys used in CVTs so that riders don't need to think about clicking through specific gear combinations. They'll just shift one way or the other through an analog range until it feels right. And the engineers will figure out how to keep the weight penalty low. For an OP about the future of cycling, why are you so quick to rule out "what could be"?

I'm about to receive a new bike with Di2, and I've been reading about Synchro Shift, where the computer controls both the front and rear derailleurs, so instead of manually shifting the FD when it's time to cross over you just shift up or down, and the computer automatically cross-shifts the FD and RD at the right point. The "right point" is user-programmable via an app that can save the settings down to the Di2. I'm looking forward to playing around with this, since I'm notoriously bad at shifting through my FD when I really should to keep my chainline reasonable. This will also let me automagically take better advantage of the 1-tooth range of my rear cogs.

Not quite the same as CVT, but definitely heading in a direction away from manual FD/RD shifting.