Chain wear measurement

[JimmyD]

Sorry to bring this up again, I tried searching unsuccesfully for the thread that talked about chain wear and measuring with a vernier caliper, if I remember correctly there was an image showing the scale measurement.

does anyone have the link

Thanks

Edit--

found the link

http://weightweenies.starbike.com/forum ... in&start=0

[Enforcer]

The best:

http://www.parktool.com/tools/CC_3.shtml

[jersievers]

The best:

http://www.parktool.com/tools/CC_3.shtml

I second that.

[divve]

The best of the best:



To elaborate, the Park Tool meter measures 0.75% - 1% wear. Both of which is already too far. On modern drive trains chains should be replaced at about 0.5% wear.

The Caliber 2 measures 0.075mm - 0.1mm wear per link or respectively 0.3% - 0.4%.

[danmtchl]

I can make it even easier to check a chain if you do not have the tools.
Get a ruler a measure from the middle of a pin to another pin at 12 inches
and if it is longer than 12 inches replace the chain. Simple.

[divve]

1/16" longer.

[tommasini]

Campy says that at 132.6 mm between a certain number of rollers is the max - I don't recall what percent wear (remember chains don't stretch they wear away on the bushings/pins which then gives slopier joints that show up as a longer chain) but when I've done it this way it was real close to the same as 1/32" lenghtening in 12" - a very conservative and good "safe" point toward saving your cassettes.

[divve]

The Campy tolerance corresponds to 0.45% wear.

[Ripley451]

[quote="divve"]The best of the best:



To elaborate, the Park Tool meter measures 0.75% - 1% wear. Both of which is already too far. On modern drive trains chains should be replaced at about 0.5% wear. [quote]

I use http://www.parktool.com/tools/CC_2.shtml
It measures from 0-1%