Originally Posted by
AMoney
I measured the chain wear on one of my bikes today. On the Pedro Chain Checker Plus II, the #3 hook is easily going into links, which indicates a wear rate greater than .75%. However, when I measured the chain wear with a ruler, it only stretched by 1/32 of an inch. Based on these measurements, should I replace the chain immediately? Or, can I get a little bit more life out of my chain?
Always trust the humble RULER. Get rid of the fancy dancy chain checkers.
1/32 inch is only half time. Replace when it wears 1/16 inch.
Good write up and illustrations below:
http://atbicycle.blogspot.com/2014/0...nch-ruler.html
New chain:
Worn 1/16 inch - Replace chain.
Worn 1/8 inch - Your cassette is probably trashed at this point.