Originally Posted by
JTGraphics
This is not just for compact crank setup in general its about 2-3 on rear before a front ring change.
Its only to keep your cadence around the same speed once you figure out your setup it will make sense to you.
only difference is that the most common double setup is a 13 tooth jump, while the most common compact setups are 16 tooth jumps, which make the effect a bit more pronounced.
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