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Another Chain Length Question...

1057 Views 2 Replies 3 Participants Last post by  NordieBoy
Hi there,

This might be a dumb question, but I am new to how sensitive 12 speed drivetrains are to setup! I'm having difficulty getting my GX Eagle to shift cleanly through the cassette, and I wanted a sanity check on the chain length!

Pictures are taken unsagged, but there isn't much chain growth (2021 Sentinel).

How does it look? Before I break the chain to check, does anyone have any thoughts?


Big cog:

Small cog:

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Wrap the chain over the top of the chain ring and then pull the bottom piece of chain forward (in the small gear).

it will pick up tension. The first bit is sort of a loose tension. Then it becomes full tension as the clutch engages.

just match up the link on the chainring that holds the tension.

i find the chain will pass just underneath the clutch or the lower portion of the clutch.

in order to shift properly you must align your hanger and then set b gap with the tool while the bike is at sag.
Pop the shock off and the chain should never get tight in the lowest gear throughout the travel.
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