Originally Posted by
Scrabbler
How much is a chain strength weakened by removing and reinstalling a connecting pin?
28.3%.[SUP][citation needed][/SUP]
Originally Posted by
FBinNY
Actually the most common chain breakage injury is to the front derailleur, as the chain whips forward snagging the cage and tearing it off the bike.
At first I was having a hard time picturing that, but then I realised you've got all this force on the cranks that are suddenly free to turn, until a split-second later the chain hooks up the FD, and then you crank it right off the seat tube!
Ugly.