Originally Posted by
FBinNY
There'should no real guideline for single speed chains. It's simply a question of economics. The chain will run and transmit power up to 3% stretch, which is 6 times the guideline for derailleur chains. At that point you'd replace the chain and sprockets together. .
This is good to know, as I was about to check my FG chain and would have replaced it if it had the 1/8" stretch! I'd put a case around it, oiled it maybe 3 times (once per thousand miles roughly) and have never cleaned it. Since I'm accustomed to leaving chains alone until they complain, and it never has. Am I tempting fate with that?