Chain question

Neal said:

I read the recent discussion here about checking chain wear and I tried several
methods to check my Campy 10 speed chain. Campy states in their instructions
the the maximum lenght for six links is 132.6 mm. My chain has about 2700 miles
on it and it measured about 132.5 using accurate calipers. If I measure 12
inches using a straight edge, the chain shows hardly any wear. It is bearly 12
1/32". So, I really don't know if my chain needs to be replaced or not. Which
method should I use? The chain is not making any excessive noise and the
shifting is perfect.

I'm only a little confused. It seems to me that six links should
measure six inches (152.4mm). I just now took a metric scale and held
it next to a chain and the only thing I can figure out that might
measure 132.6mm would be from the "left side" of one rivet to the
"right side" of the comparable rivet six links away. Is this what
you're measuring, or is 132.x above a typo?

Anyway, since chain pitch is in inches, and you'll get a better idea
of wear over twelve links than over six, I'd go with the traditional
method.

jeverett3<AT>earthlink<DOT>net http://home.earthlink.net/~jeverett3

Neal said:

If I measure 12 inches using a straight edge, the chain shows hardly any wear. It is bearly 12 1/32".

Just make sure you've got some tension on the chain (put it on the big
ring). A 0.5 percent elongation in 12 inches is 1/16" and that is
pretty easy to measure. If you've got only 1/32" you're ok. It doesn't
make sense to use mm since the chain pitch is based on an inch.

Quoted message said:

The chain is not making any excessive noise and the shifting is perfect.

That can be misleading.

Art Harris

Neal said:

I read the recent discussion here about checking chain wear and I tried several
methods to check my Campy 10 speed chain. Campy states in their instructions
the the maximum lenght for six links is 132.6 mm. My chain has about 2700 miles

Do you mean 152.6? (6 inches is 152.4 mm)

Quoted message said:

on it and it measured about 132.5 using accurate calipers. If I measure 12

And 152.5?

Quoted message said:

inches using a straight edge, the chain shows hardly any wear. It is bearly 12
1/32". So, I really don't know if my chain needs to be replaced or not. Which
method should I use? The chain is not making any excessive noise and the
shifting is perfect.

152.6 millimeters = 6.00787402 inches or about 0.13 percent. That's a very
low wear to replace at.

Your measured 152.5 millimeters * 2 = 12.007874 inches or about 12" and
1/128th. Did you make sure the chain was under at least some tension?

Jasper

"Jasper Janssen" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

I read the recent discussion here about checking chain wear and I tried
several
methods to check my Campy 10 speed chain. Campy states in their instructions
the the maximum lenght for six links is 132.6 mm. My chain has about 2700
miles

Do you mean 152.6? (6 inches is 152.4 mm)

Quoted message said:

on it and it measured about 132.5 using accurate calipers. If I measure 12

And 152.5?

Quoted message said:

inches using a straight edge, the chain shows hardly any wear. It is bearly 12
1/32". So, I really don't know if my chain needs to be replaced or not.
Which
method should I use? The chain is not making any excessive noise and the
shifting is perfect.

152.6 millimeters = 6.00787402 inches or about 0.13 percent. That's a very
low wear to replace at.

Your measured 152.5 millimeters * 2 = 12.007874 inches or about 12" and
1/128th. Did you make sure the chain was under at least some tension?

Jasper

I think that I could have explained the Campagnolo method of chain measurement
better. The measurement does show six links in the diagram in the manual. The
Campy manual explains it better than I can. The part that refers to measurement
is on page 35.

http://www.campagnolo.com/pdf/C10HD_L_CHAIN.pdf

I did have the chain under the tension of the derailleur. I think I will just
go ahead and get a new chain.

Neal

Neal said:

I think I will just go ahead and get a new chain.

I'm puzzled. You measured your chain with two different methods and
they both showed that it was still good (i.e. not greater than 132.6 mm
with method 1 and less than 12 1/16" with method 2). You report that
the chain looks, works, and sounds fine.

Based on this you now conclude that you should replace the chain?

Bonjour,

John Everett a écrit dans son message :

Quoted message said:

I'm only a little confused. It seems to me that six links should
measure six inches (152.4mm). I just now took a metric scale and held
it next to a chain and the only thing I can figure out that might
measure 132.6mm would be from the "left side" of one rivet to the
"right side" of the comparable rivet six links away. Is this what
you're measuring, or is 132.x above a typo?

Quoted message said:

Anyway, since chain pitch is in inches, and you'll get a better idea
of wear over twelve links than over six, I'd go with the traditional
method.

Method Campagnolo is different !
http://www.campagnolo.com/pdf/140-cat9V-2000.pdf

--
Cordialement
Jean Pasquet
[On respecte un homme qui se respecte lui-même] Honoré de Balzac
(remettre les 3 voyelles à mon nom pour répondre)

"peter" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

I think I will just go ahead and get a new chain.

I'm puzzled. You measured your chain with two different methods and
they both showed that it was still good (i.e. not greater than 132.6 mm
with method 1 and less than 12 1/16" with method 2). You report that
the chain looks, works, and sounds fine.

Based on this you now conclude that you should replace the chain?

Neal,
I'll take that Campagnolo chain and pay for the shipping if you're going to
toss it.
-tom

Neal said:

I think that I could have explained the Campagnolo method of chain measurement
better. The measurement does show six links in the diagram in the manual. The
Campy manual explains it better than I can. The part that refers to measurement
is on page 35.

http://www.campagnolo.com/pdf/C10HD_L_CHAIN.pdf

I did have the chain under the tension of the derailleur. I think I will just
go ahead and get a new chain.

Neal

Buy a new chain and compare the old one with the new one by hanging them
next to each other on a nail from the ceiling.

See
http://home.planet.nl/~holtm072/albums/kettingslijtage20042005/photos/photo2.html

left = new C10 chain
right = old C10 chain after 10000 km.

If the old one is OK (less than 4 mm elongation) put the old chain back
on the bike using a connex 10 speed masterlink. Keep the new chain
standby and keep track of the elongation with a Rohloff chain checker.
If you think it's worn do the above procedure again to make sure.

Lou
--
Posted by news://news.nb.nu

"peter" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

I think I will just go ahead and get a new chain.

I'm puzzled. You measured your chain with two different methods and
they both showed that it was still good (i.e. not greater than 132.6 mm
with method 1 and less than 12 1/16" with method 2). You report that
the chain looks, works, and sounds fine.

Based on this you now conclude that you should replace the chain?

The Campy measurement method shows the chain is .1 mm away from replacement.
By the time I get a new chain, the wear probably will reach the 132.6mm
limit.

Neal

"Tom Nakashima" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

"peter" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

I think I will just go ahead and get a new chain.

I'm puzzled. You measured your chain with two different methods and
they both showed that it was still good (i.e. not greater than 132.6 mm
with method 1 and less than 12 1/16" with method 2). You report that
the chain looks, works, and sounds fine.

Based on this you now conclude that you should replace the chain?

Neal,
I'll take that Campagnolo chain and pay for the shipping if you're going
to toss it.
-tom

A new chain is only $34.99. Why would you want a chain that is close to the
end of its usefullness?

Neal

"Lou Holtman" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

I think that I could have explained the Campagnolo method of chain
measurement better. The measurement does show six links in the diagram
in the manual. The Campy manual explains it better than I can. The part
that refers to measurement is on page 35.

http://www.campagnolo.com/pdf/C10HD_L_CHAIN.pdf

I did have the chain under the tension of the derailleur. I think I
will just go ahead and get a new chain.

Neal

Buy a new chain and compare the old one with the new one by hanging them
next to each other on a nail from the ceiling.

See
http://home.planet.nl/~holtm072/albums/kettingslijtage20042005/photos/photo2.html

left = new C10 chain
right = old C10 chain after 10000 km.

If the old one is OK (less than 4 mm elongation) put the old chain back on
the bike using a connex 10 speed masterlink. Keep the new chain standby
and keep track of the elongation with a Rohloff chain checker. If you
think it's worn do the above procedure again to make sure.

Lou
--
Posted by news://news.nb.nu

I like this suggestion and will try it. What about the Park CC-3 chain
checker? Is it as good as the Rohloff?

Neal

Neal:

Quoted message said:

The Campy measurement method shows the chain is .1 mm away from replacement.
By the time I get a new chain, the wear probably will reach the 132.6mm
limit.

Nothing wrong with buying a chain and having it available. But I see
no reason to rush to replace it until you have at least one measurement
that shows the old one to clearly be past the wear limit (disregard if
you're setting out tomorrow on a transcontinental trek).

Anyway, if the 12" ruler test shows only 1/32" of wear then the Campy
test is probably unduly conservative (afterall, they won't mind at all
if you buy more chains than needed). Do you know what it measured on
the Campy test when new?

15 Sep 2005 19:34:38 -0400 'Neal said:

A new chain is only $34.99. Why would you want a chain that is close to the
end of its usefullness?

I suspect that you'll understand better after you buy your new chain
and measure it after your first ride.

Even new chains will measure a bit more than the nominal 1/2" per
link.

-
-----------------------------------------------
Jim Adney [email hidden]
Madison, WI 53711 USA
-----------------------------------------------

Neal said:

A new chain is only $34.99.

ONLY $34.99?!!! Wow, is that what 10-speed chains cost? I get Shimano
9-speed chains on sale for ~$10.

Art Harris

"Art Harris" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

A new chain is only $34.99.

ONLY $34.99?!!! Wow, is that what 10-speed chains cost? I get Shimano
9-speed chains on sale for ~$10.

Art Harris

Art,
Which Shimano chains are these? I'm interested.
-tom

Neal said:

"peter" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

I think I will just go ahead and get a new chain.

I'm puzzled. You measured your chain with two different methods and
they both showed that it was still good (i.e. not greater than 132.6 mm
with method 1 and less than 12 1/16" with method 2). You report that
the chain looks, works, and sounds fine.

Based on this you now conclude that you should replace the chain?

The Campy measurement method shows the chain is .1 mm away from replacement.
By the time I get a new chain, the wear probably will reach the 132.6mm
limit.

Neal

be confident with the campy method. most people here follow the "wooden
ruler" method that is neither accurate nor takes into account roller wear.

for the record, campy's spec is pretty tight, but the dividend of early
replacement is longer cassette life.

"jim beam" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal said:

"peter" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Neal wrote:

>I think I will just go ahead and get a new chain.

I'm puzzled. You measured your chain with two different methods and
they both showed that it was still good (i.e. not greater than 132.6 mm
with method 1 and less than 12 1/16" with method 2). You report that
the chain looks, works, and sounds fine.

Based on this you now conclude that you should replace the chain?

The Campy measurement method shows the chain is .1 mm away from
replacement. By the time I get a new chain, the wear probably will reach
the 132.6mm limit.

Neal

be confident with the campy method. most people here follow the "wooden
ruler" method that is neither accurate nor takes into account roller wear.

for the record, campy's spec is pretty tight, but the dividend of early
replacement is longer cassette life.

Jim is right,
and just for the heck of it, price out Campagnolo 10sp cassettes.

Neal, I personally don't use Campagnolo chains or cassettes, but my friend
was interested in your used chain if you were going to toss it. He likes to
run them down to the ground, and thought there was still a lot of life left
in your chain.

The best value for me is the Ultegra 9sp steel cassettes which I can get for
about the price of a Campagnolo10sp chain. I'm amazed on the durability of
the Ultegra steel cassettes, they last a long time as does the Sram PC 59
chain for $12.00.
-tom

Quoted message said:

Quoted message said:

ONLY $34.99?!!! Wow, is that what 10-speed chains cost? I get Shimano
9-speed chains on sale for ~$10.

Art Harris

Art,
Which Shimano chains are these? I'm interested.
-tom

Probably HG53, but I doubt they'll be that cheap anymore. Wholesale to the
dealer just went up $1.25, ouch! A lot of Shimano stuff was just recently
hit with big price increases.

--Mike-- Chain Reaction Bicycles
www.ChainReactionBicycles.com

Tom Nakashima said:

Which Shimano chains are these? I'm interested.

Shimano HG-53 9-speed chain. I bought several on sale at Nashbar last
year. Think I paid $9.99. Nashbar currently has the HG-73 chain on sale
for $12.99 and you can get 10% off that with Coupon Code TKA6.

Art Harris