Campag Inner Chainring Wear?

If you can do this yourself, you could flip your chain rings over so
you are using the other side of the teeth.

John said:

Did I wear out my inner chainring?

Due to hub, & casette reasons, I ran the same chain & casette for nearly
three years, well over 10k miles (possibly 15k on the casette.

Now I have a new hub, casette (campagnolo 10) and chain. Great right? Well,
under a bit of pressure, the chain gets sucked up the back side of the inner
chainring. The chain fails to "flow" off of the chainring back to the
deraileur but rides up a bit until it drops free then rides up again.

I've gone through the chain, can't find a single sticky link. Seems to be
universal and not specific to a specific link. Can't see any chain link pins
protuding to catch.

I don't see any obvious deformaties to the teeth on the chainring, but am
thinking a small bit on each makes a big difference.

Am I thinking right on this? I'd hate to spend $70 on a new ring to have it
be something else.

-jb

John said:

Did I wear out my inner chainring?

Due to hub, & casette reasons, I ran the same chain & casette for nearly
three years, well over 10k miles (possibly 15k on the casette.

I can't imagine what "hub and cassette" reasons there would be to ride
worn-out chains. Change your chain when it stretches by 1/16" inch per
foot, and you will not have to replace the cassette every time.

Quoted message said:

Now I have a new hub, casette (campagnolo 10) and chain. Great right?
Well, under a bit of pressure, the chain gets sucked up the back side of
the inner chainring.

Yep, it's worn out. You get the same symptoms from a worn out chainring
that you get from a worn-out cassette with a new chain, it skips, which is
basically what you are describing.

Quoted message said:

Am I thinking right on this? I'd hate to spend $70 on a new ring to have
it be something else.

Oh well, let it be a lesson to you to change your chain when it is time.

--

David L. Johnson

__o | When you are up to your ass in alligators, it's hard to remember
_`\(,_ | that your initial objective was to drain the swamp. -- LBJ
(_)/ (_) |

John said:

Did I wear out my inner chainring?

Due to hub, & casette reasons, I ran the same chain & casette for nearly
three years, well over 10k miles (possibly 15k on the casette.

Now I have a new hub, casette (campagnolo 10) and chain. Great right? Well,
under a bit of pressure, the chain gets sucked up the back side of the inner
chainring. The chain fails to "flow" off of the chainring back to the
deraileur but rides up a bit until it drops free then rides up again.

I've gone through the chain, can't find a single sticky link. Seems to be
universal and not specific to a specific link. Can't see any chain link pins
protuding to catch.

I don't see any obvious deformaties to the teeth on the chainring, but am
thinking a small bit on each makes a big difference.

Am I thinking right on this? I'd hate to spend $70 on a new ring to have it
be something else.

Probably small ring is worn out./ Find somebody(like us) that has TA
39t rings-$35...

Quoted message said:

-jb

Quoted message said:

If you can do this yourself, you could flip your chain rings over so
you are using the other side of the teeth.

John said:

Did I wear out my inner chainring?

Due to hub, & casette reasons, I ran the same chain & casette for nearly
three years, well over 10k miles (possibly 15k on the casette.

Now I have a new hub, casette (campagnolo 10) and chain. Great right? Well,
under a bit of pressure, the chain gets sucked up the back side of the inner
chainring. The chain fails to "flow" off of the chainring back to the
deraileur but rides up a bit until it drops free then rides up again.

I've gone through the chain, can't find a single sticky link. Seems to be
universal and not specific to a specific link. Can't see any chain link pins
protuding to catch.

I don't see any obvious deformaties to the teeth on the chainring, but am
thinking a small bit on each makes a big difference.

Am I thinking right on this? I'd hate to spend $70 on a new ring to have it
be something else.

-jb

You absolutely can not just flip a chain ring around to use the other
side of the teeth because all modern chain rings have the teeth shaped
to ensure proper shifting and only work in one direction. The only
exception is if you have a chain ring that is specifically designed for
single-speeding like the Surly or Blackspire rings, and even then just
replace it.

"Qui si parla Campagnolo" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Quoted message said:

Probably small ring is worn out./ Find somebody(like us) that has TA
39t rings-$35...

Are the TA rings as good as campy? I'm reasonably picky about shifting
performance. Any tradeoffs?

-jb

Quoted message said:

Quoted message said:

John said:

Now I have a new hub, casette (campagnolo 10) and chain. Great right? Well,
under a bit of pressure, the chain gets sucked up the back side of the inner
chainring. The chain fails to "flow" off of the chainring back to the
deraileur but rides up a bit until it drops free then rides up again.

You absolutely can not just flip a chain ring around to use the other
side of the teeth because all modern chain rings have the teeth shaped
to ensure proper shifting and only work in one direction. The only
exception is if you have a chain ring that is specifically designed for
single-speeding like the Surly or Blackspire rings, and even then just
replace it.

[Think I edited the attributions correctly]

I don't have any modern 2-ring cranksets, but I believe the inner ring
has no such ramps or directionality. This is certainly true of triple
inner rings. The bolt holes may be countersunk on one side only,though.
The teeth may be offset from the center of the ring requiring some
thin spacers.

If John was thinking of the middle ring of a triple, or a big ring, I agree.

Mark

I'm very satisfied with the TAs I have on my bike.

John said:

"Qui si parla Campagnolo" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Quoted message said:

Probably small ring is worn out./ Find somebody(like us) that has TA
39t rings-$35...

Are the TA rings as good as campy? I'm reasonably picky about shifting
performance. Any tradeoffs?

-jb

Well, geee, nothing is as good as Campagnolo but I use TA rings on my
crank. They work well, last a long time and remember, it's the 39t, so
shifting off of it is never a real problem.

John said:

Did I wear out my inner chainring?

Due to hub, & casette reasons, I ran the same chain & casette for nearly
three years, well over 10k miles (possibly 15k on the casette.

Now I have a new hub, casette (campagnolo 10) and chain. Great right? Well,
under a bit of pressure, the chain gets sucked up the back side of the inner
chainring. The chain fails to "flow" off of the chainring back to the
deraileur but rides up a bit until it drops free then rides up again.

I've gone through the chain, can't find a single sticky link. Seems to be
universal and not specific to a specific link. Can't see any chain link pins
protuding to catch.

I don't see any obvious deformaties to the teeth on the chainring, but am
thinking a small bit on each makes a big difference.

Am I thinking right on this? I'd hate to spend $70 on a new ring to have it
be something else.

-jb

It is and refering to your post about $, TA makes good rimgs but just
get a Campagnolo one as well, once per 2 years or so....