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Campy 10 spped cahin replacement.(8 posts)

Campy 10 spped cahin replacement.Juanmoretime
Aug 2, 2003 9:22 AM
I checked my chain this morning after my ride and came up with half way between .25 and .50 on my Park chain checker. Where would you replace it at? I've heard you should replace the 10 speed chains sooner. Would you replace it between .50 and .75?

Thank you in advance for any input.
Sorry, s/b 10 speed chain. nmJuanmoretime
Aug 2, 2003 9:23 AM
Campy Sez....Bixe
Aug 2, 2003 10:44 AM

Page 25 provides guidelines regarding longevity as well as how to measure for stretch and how much is too much....
Yeah dont forget to...the bull
Aug 2, 2003 1:29 PM
Lube the chain with there 35 dollar a can spray(Whats it called superripoff or something)!Does anyone use this stuff?
It must work nice!Personally I think Astroglide is cheaper!!!
How weird!!!!!the bull
Aug 2, 2003 1:24 PM
I just checked mine as well this morining!
It was just over .50 .
I am going to replace it tonight!
I think it good to replace it at .50 or over.
Anything over .75 is going start a rapid wear on the drivetrain,but at campy cassette prices I dont play around.
I keep a extra chain ready to go
double check...C-40
Aug 2, 2003 7:45 PM
The Park Chain Checker may not be totally accurate. I use a 12 inch machinists scale and check from the outer edge of a pin on one end of the scale to the inner edge of the pin on the opposite end (same as center to center). On a new chain, one pin is totally covered by the scale. As the chain wears, that pin will begin to peak out from under the scale. 1/2 the diameter of a pin is a bit over .5% stretch.

My chains don't wear a fraction of this amount in 3000 miles. I suspect I could get 6000+ before reaching the limit of elongation, but I think that side wear deteriorates shifting performance enough to justify replacement before reaching that many miles.
I will...the bull
Aug 3, 2003 4:28 AM
I will bring mine home from work on monday and check it.
One thing I had to do was file the edge of the pin on the checker to make it fit in the narrow 10 speed chain better.When I stick the checker in a new chain it is tight and reads 0 so I think it is somewhat accurate.I will do both and repost my results on monday night.
Not sure you should trust the Park unitKerry Irons
Aug 2, 2003 4:27 PM
I've gotten some strange responses from the Park chain checker, and finally just quit using it. I don't think the fundamental principle is right. Just measure your chain. If it is under 1/16" elongation in 12", you're still just fine. This is the final arbiter of chain wear, not some "push the bushings apart/together in one link" device.