[Closed] chain checker / wear indicator

It's such a simple piece of kit I doubt 'better' is possible.

on-one are doing cheap ones now if you're getting some other bits and bobs to qualify for free postage.

Get the one that's just a plate of metal with a .75% indicator on one side and a 1% indicator on the other. I found the Park Toool one with the moving scale inconsistent and unnecessarily complicated.

There are only two chain wear checkers that actually do anything useful: Shimano's TL-CN41 £50 jobby, and a ruler!

All others measure chain roller wear which really has no bearing on anything at all (a fancy website out there explains this far better than I can).

Replace chain at 12 1/16" over 12 link pairs (0.5% wear). As recommended by the late great Sheldon Brown.

Unless you have some odd disability, using a ruler with the chain still on the bike is as quick as using one of the silly gauges.

I've had a Rholoff Caliber 2 for almost 20 years and I think it's a great tool... in fact I think I love it 😳

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xxx

Just found this [url= http://pardo.net/bike/pic/fail-004/000.html ]This[/url], interesting read.

I use one of these...

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You can re-calibrate it if necessary, which is what swung it for me.

Edit : But after a skim-read of the above article it seems it's total shit... 🙂

Well I never. Learn something new everyday from Sheldon Brown!

Was going to recommend my Park Tool, but not anymore....

Tucker is right. I have the rohloff tool but only use it as a quick check. When that says the chain is buggered, I then start checking with a steel rule. Typically it's only half wornat this point.

I think Tucker is right. The last two chain changes I have done on my bike have been when the chain wear thing just gets to the 0.75" area, then as soon as new chain is on it's slipping off the cassette under load and chain sucking at the front. Grrrrrrr - two new cassettes and two new chain rings in 12 months Grrrrr grrrrr grrrrrrr.

I will be using the ruler method (ooooerrrr missus) if I can ever remember the sizes quoted above.

**** me this chain wear stuff is complicated

When that says the chain is buggered, I then start checking with a steel rule. Typically it's only half wornat this point.

I used the park tool and also had to swap out the casette when I fitted a new chain, from that I believe the tool isn't a good way to estimate chain wear.

Most will over estimate as they measure wear, plus roller tolerances instead of just wear.

The ruler method is easy. I have a rule set aside for it. A triangle of white tape shows mydatum (not the end of the rule) then use green and red to show new and worn. I use a 600mm rule as the longer the rule, the more accurate the measure.