The Sram PC-1 is the only chain I've ever broken. Never again.
Originally Posted by
mutant eyebrow
I get tired of reading that 5mm or 7mm off is okay.
I've never thought about it enough to put an actual number on it but in the grand scheme of things a few mm is never any kind of big deal. Look at how slight 2mm is on a ruler and try to honesty tell me it would make a difference.
This bike had a chainline at one time that was off by at least a centimeter and I never came close to dropping the chain.
Originally Posted by
mutant eyebrow
I was rocking my road SS bike side to side with a lot of torque when the chain dropped.
Most likely because your frame flexed (which would have still happened had your chainline been perfect). Think about it.
At any rate, this thread wasn't intended to be about discussing chainline.