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is it just the standard tool to measure chain stretch or is there a different one for 11 speed
The same. Links are the same length.
Best to get one with 0.5 rather than the usual 0.75/1.0 - as when 11 speeds stretch they seem to suddenly go IME.
Park Tools changed to 0.5 a while back anyway. Probably when they renewed their deal with the chain manufacturers who were moaning people weren't changing perfectly good chains frequently enough 😉
p.s. as always - chains don't stretch. http://sheldonbrown.com/chain-wear.html
*makes note to produce "11-speed specific" tools*
p.s. as always - chains don't stretch
Yes they do. "stretch" means "get longer", which is what happens to the chain. It's the individual side plates that don't stretch.
[i]*makes note to produce "11-speed specific" tools* [/I]
Ha Ha
Laugh all you like but I've noticed that 11-speed has a different 'approach' to stretch than 9-speed did.
I check my chain whenever I do any maintenance, and had checked it at less than 0.75. A week later (after only one ride) it'd stretched out past 1.0. A new chain just wasn't happy didn't replace anything else), so I put the old one back on, and 3 months later still running fine and when it 'fails' I'll just replace the lot.
Is it different for my 29er?
b r - MemberI check my chain whenever I do any maintenance, and had checked it at less than 0.75. A week later (after only one ride) it'd stretched out past 1.0. A new chain just wasn't happy didn't replace anything else), so I put the old one back on, and 3 months later still running fine and when it 'fails' I'll just replace the lot.
The tools don't measure accurately or consistently enough IMO, it's also a bit of a vague science - not every cog will get used the same amount etc