Thread: 1x9 Drivetrain
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Old 05-27-17 | 12:01 AM
  #19  
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Bike Gremlin
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Bikes: Heavy, with friction shifters

Originally Posted by PDKL45
For me it would not be a exercise in lowering gears, so much as a way to reduce complexity and redundancy.
44-32-22 crank, with a widely available 11-32 cassette works fine and simple. Giving a wider range than a 1x setup, with most readily, widely and cheaply available cassettes and RDs. Also allowing for less cross chaining. That is what front chainrings do - add gear range, without needing wide gaps between adjacent (rear) cog sizes to provide that, without having the chain run crossed on highest and lowest gear and requiring too many cogs to do all that. It is a simple, proven design that works.

Having 1x setup with a wide range cassette is the less simple solution IMO. To me it's similar to trying to make a car without a gearbox, trying to make an engine with a wider range of RPMs providing high torque (electric motors aside - they do that without problems), if you understand my analogy. With a 1x, instead of a 2, or 3x, you need a very wide range cassette, very long cage RD, sometimes hung lower than it is standard with an adapter, sometimes with and added front side chain catcher to prevent chain coming off the (front) chainring.
It also has you riding with a very few teeth involved on most flats. 30-11 combo will wear out a lot faster than say 42-15 (those two have similar gear ratio).

As for "redundancy", if avoiding that is a goal by itself, no one can argue it, though a compact 2x drivetrain is good at avoiding redundancy - and some don't find it practical exactly because of that - it requires a few back shifts after one front shift in order to stay in a similar gear range as before the front shift. Of course, 1x doesn't have that particular problem (and neither does a standard dobule, or a triple, but they do have the "redundancy" of gears).

Last edited by Bike Gremlin; 05-27-17 at 12:06 AM.
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