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I’ve been thinking of doing the opposite, cutting it longer to reduce the chain tension in big-big. I never ride small-small, but often ride big-big. So would love to know the best chain length optimised for that ratio.
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On some derailleurs the chain tensioner is designed to move the upper pulley closer to the cassette when the chain is slack, to put it closer to the small cogs for better shifting. If you have too long a chain it might not work as intended.
This may make sod all difference in practice.
snoops
grams
@nejib
Any reason (other than aesthetical) to cut a chain shorter than the length required to clear the pulleys on small + small rings? All I can think of is increasing tension and potentially reducing chain slap.