Asking for Part Verification for Custom Drivetrain
12-30-23, 12:43 PM
#26
aged to perfection
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Nice conjecture about it being a fake chain. Nevermind the fact that I took it from the box directly from the North American distributor and sold it to myself at employee discount rate.
What the picture shows is the sideplates of the 1 single extra link I pressed back into the chain failed to exert enough swaging force to resist the chain link twisting in half when one side engaged the adjacent cog as it tends to do when one wishes to shift.
Thinner plates offer less area in the bore of each hole for interface and repeated pin insertion and removal swells up the hole resulting in looser interference fit. In short the pin fitment into each side-plate is more easily compromised than on thicker plates. In higher speed chains like 10, 11, 12 a pin insertion event should be considered a 1-time deal. Since the factory already did it once...You do the math.
What the picture shows is the sideplates of the 1 single extra link I pressed back into the chain failed to exert enough swaging force to resist the chain link twisting in half when one side engaged the adjacent cog as it tends to do when one wishes to shift.
Thinner plates offer less area in the bore of each hole for interface and repeated pin insertion and removal swells up the hole resulting in looser interference fit. In short the pin fitment into each side-plate is more easily compromised than on thicker plates. In higher speed chains like 10, 11, 12 a pin insertion event should be considered a 1-time deal. Since the factory already did it once...You do the math.
I'm not sure I could put a chain back together with a couple of rocks found at the trail side.
/markp
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12-30-23, 02:39 PM
#27
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For a moment I was tempted to continue my ride. But better sense prevailed and I headed directly home. Since then I carry a chain tool (that I've tested and know works well) as part of a multi-tool and a spare quick link. Of course, now that I'm properly prepared, I haven't had a chain problem.
