this post was submitted on 05 Nov 2023
15 points (100.0% liked)
bike wrench
747 readers
13 users here now
A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
This is a random guess: if the chain fell off while shifting, then the sideways forces of the derailleur acting upon the replaceable link could have dislodged the pins. But if the link was secured on both its faces, this shouldn't be possible. So instead, it could have been that one link face wasn't secured, and by sheer luck, the replaceable link never happened to 1) be at the derailleur while 2) shifting gear ratios.