guidodg

How to measure chain wear on an Eagle X0 chain...?



I have been reading that the normal way to measure chain wear on the Eagle 12s chains does not work with the drop in measuring calipers..



I have 2 chains that I rotate every 2000km on my Eagle X0 drivetrain...so far so good...the cassette has 8000km and works perfectly...the chain in now making a noise so I assume 4000km is about right...but is there any way to measure it?



I use Squirt lube as do most of my riding buddies, which is amazing...my friend on his Scalpel has done 13000km on his Eagle X0 cassette...3 chains so far...still going strong.

DaveSSS 

Any chain can be measured for the true change in pitch with a 12 inch precision machinist's rule. Place one end on the edge of a pin. The pin at the opposite end will be completely covered when the chain is new. If nearly half of that covered pin is exposed, you have 0.5% increase in pitch.

The 0.5% number is totally arbitrary, with the idea that changing chains at that point will allow a reasonable number of chains to be used with a cassette before the cassette wears to the point where a new chain skips under load on the most worn sprockets. Eventually, new chain skip always occurs.

With road bikes, I use 3-4 chains in a rotation and never have to worry about new-chain skip. The cassette will last through the life of all the chains in the rotation.

Phil_gretz

^ this. Steel machinists ruler. It's the simplest and most sensible way to measure chain elongation. Have the steel rule as part of your machinists tool chest, along with calipers, thickness/gap gauges, etc.

dsbrantjr

When my chain checker showed 0.5% wear on a new chain, I tossed it out and use a machinist's rule now. Use pedal pressure to tension it if on the bike, or hang it from a nail if not.

Dirk de Chablis

If you hold your wallet next to the chain and it feels lighter then you need a new chain

trailangel

Post where you are reading this