Originally Posted by
oneclick
A new (or good) chain on a worn sprocket will not fit. Checking the chain with calipers/chain-checker IS the only way to be sure.
Originally Posted by
oneclick
A ruler he doesn't have?
Do you think it would be possible to have a situation where the chain is significantly stretched, yet it sits down in all the low points on the large sprocket, and never jumps teeth on a sprocket while riding?