Chain Slips with new SRAM chain and "slightly used" Ultegra Cassette

I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

On Oct 12, 7:52*am, Doug T wrote:
I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

Doug, your dilemma ranks about 6 on the WTH list. Chain replacement
usually requires cassette replacement - its the cassette's diameter ?
I can't tell the difference with wood worker's eyes not machinist's.
have an older cassette ? Compare it to the slightly used or find a new
one and...
Experiment B - run the chain on a unused cog to see what.

On 10/12/2011 10:52 AM, Doug T wrote:
I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

With my 10 speed 105, I've had to replace a cassette under the
conditions that you describe. I let the chain get to about .9 and
changed it only to have it slip on climbs. The cassette didn't look bad
to me and even the LBS guys said to give it a try.
Had to change the cassette.

Now I change the chain at .7 and get 2 or 3 chains per cassette. Maybe
you're seeing the same thing.

On Oct 12, 7:52*am, Doug T wrote:
I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

http://www.google.com/webhp?hl=en&hl...w=1152&bih=582


run the chain, bike suspended, check for chain jumps in various gears.
the eyeball or string the flat sides of cassette/deray pulley cogs and
CR's. All flat surface shouyld disappear at the same time as you
eyeball the string, and so chain ru n would also run straight.

after you go thru these tests , you may ponder an immutable cycling
law: the more expensive the cassette and chain, the more....

On Oct 12, 12:33*pm, Duane Hebert wrote:
On 10/12/2011 10:52 AM, Doug T wrote:





I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

With my 10 speed 105, I've had to replace a cassette under the
conditions that you describe. *I let the chain get to about .9 and
changed it only to have it slip on climbs. *The cassette didn't look bad
to me and even the LBS guys said to give it a try.
Had to change the cassette.

Now I change the chain at .7 and get 2 or 3 chains per cassette. *Maybe
you're seeing the same thing.- Hide quoted text -

- Show quoted text -

Thanks. I'll change my chains more frequently from now on!

If you ride the bike about 100 miles on the flats, the chain will most
likely start running on the cogs OK when climbing.

On 10/13/2011 1:49 PM, Doug T wrote:
On Oct 12, 12:33 pm, Duane wrote:
On 10/12/2011 10:52 AM, Doug T wrote:





I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

With my 10 speed 105, I've had to replace a cassette under the
conditions that you describe. I let the chain get to about .9 and
changed it only to have it slip on climbs. The cassette didn't look bad
to me and even the LBS guys said to give it a try.
Had to change the cassette.

Now I change the chain at .7 and get 2 or 3 chains per cassette. Maybe
you're seeing the same thing.- Hide quoted text -

- Show quoted text -

Thanks. I'll change my chains more frequently from now on!

Well I'd advise to at least check them more frequently g
In case you haven't read this, I think one of the best links concerning
chain care is from Sheldon Brown: http://sheldonbrown.com/chains.html

I'd also say that for my 10 speed chains, I find that cleaning them
occasionally, and doing a wipe and re-lube after each ride seems to be
extending their lives nicely.

On Oct 14, 6:00*am, Duane Hebert wrote:
On 10/13/2011 1:49 PM, Doug T wrote:



On Oct 12, 12:33 pm, Duane *wrote:
On 10/12/2011 10:52 AM, Doug T wrote:

I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

With my 10 speed 105, I've had to replace a cassette under the
conditions that you describe. *I let the chain get to about .9 and
changed it only to have it slip on climbs. *The cassette didn't look bad
to me and even the LBS guys said to give it a try.
Had to change the cassette.

Now I change the chain at .7 and get 2 or 3 chains per cassette. *Maybe
you're seeing the same thing.- Hide quoted text -

- Show quoted text -

Thanks. I'll change my chains more frequently from now on!

Well I'd advise to at least check them more frequently g
In case you haven't read this, I think one of the best links concerning
chain care is from Sheldon Brown: *http://sheldonbrown.com/chains.html

I'd also say that for my 10 speed chains, I find that cleaning them
occasionally, and doing a wipe and re-lube after each ride seems to be
extending their lives nicely.

I like to wear out chains and cassettes together, since they mesh and
function together as they wear. To extend the life of a cassette, I
rotate three chains on it - swapping chains at no more than about 500
mile intervals. This gave me something like 10,000 miles out of the
last set of three chains and a cassette, and, in a pinch, I could
still put that set back in service - at least for a while.

On Oct 14, 10:07*am, Dan O wrote:
On Oct 14, 6:00*am, Duane Hebert wrote:





On 10/13/2011 1:49 PM, Doug T wrote:

On Oct 12, 12:33 pm, Duane *wrote:
On 10/12/2011 10:52 AM, Doug T wrote:

I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

With my 10 speed 105, I've had to replace a cassette under the
conditions that you describe. *I let the chain get to about .9 and
changed it only to have it slip on climbs. *The cassette didn't look bad
to me and even the LBS guys said to give it a try.
Had to change the cassette.

Now I change the chain at .7 and get 2 or 3 chains per cassette. *Maybe
you're seeing the same thing.- Hide quoted text -

- Show quoted text -

Thanks. I'll change my chains more frequently from now on!

Well I'd advise to at least check them more frequently g
In case you haven't read this, I think one of the best links concerning
chain care is from Sheldon Brown: *http://sheldonbrown.com/chains.html

I'd also say that for my 10 speed chains, I find that cleaning them
occasionally, and doing a wipe and re-lube after each ride seems to be
extending their lives nicely.

I like to wear out chains and cassettes together, since they mesh and
function together as they wear. *To extend the life of a cassette, I
rotate three chains on it - swapping chains at no more than about 500
mile intervals. *This gave me something like 10,000 miles out of the
last set of three chains and a cassette, and, in a pinch, I could
still put that set back in service - at least for a while.

That's a technique I've never tried but which seems to make quite a
bit of sense. But (thinking out loud) I wonder whether it would
provide more longevity than simple using a new chain after every 3,333
miles. I would guess that most of my cassettes have lasted through
several chains (many K miles per chain) but I have never carefully
documented all the swaps along the way.
DR

On Oct 14, 11:54*am, DirtRoadie wrote:
On Oct 14, 10:07*am, Dan O wrote:



On Oct 14, 6:00*am, Duane Hebert wrote:

On 10/13/2011 1:49 PM, Doug T wrote:

On Oct 12, 12:33 pm, Duane *wrote:
On 10/12/2011 10:52 AM, Doug T wrote:

I used the Park Chain tool which told me that the chain needed
replacement but the drivechain did not, so I put on a SRAM 9-Speed
Chain (PC-951) and now the chain slips over most of the rear cogs
under "climbing" load. The Cassette is Ultegra CS-6500 and appears to
be in good condition. The teeth match up almost perfectly with a brand
new CS-6500 cassette that I bought (I cannot tell them apart except
for the scraps / scuffing).

I tried the same cassette on another wheel and had the same issue.. I
also tried substituting a Dura Ace 7700 cassette with mimimal wear and
the chain also slipped!

The rear derailleur alignment looks fine.

Should I purchase a new Shimano chain instead? I've never had problems
running SRAM chains on Shimano components on my previous bikes.

With my 10 speed 105, I've had to replace a cassette under the
conditions that you describe. *I let the chain get to about .9 and
changed it only to have it slip on climbs. *The cassette didn't look bad
to me and even the LBS guys said to give it a try.
Had to change the cassette.

Now I change the chain at .7 and get 2 or 3 chains per cassette. *Maybe
you're seeing the same thing.- Hide quoted text -

- Show quoted text -

Thanks. I'll change my chains more frequently from now on!

Well I'd advise to at least check them more frequently g
In case you haven't read this, I think one of the best links concerning
chain care is from Sheldon Brown: *http://sheldonbrown.com/chains.html

I'd also say that for my 10 speed chains, I find that cleaning them
occasionally, and doing a wipe and re-lube after each ride seems to be
extending their lives nicely.

I like to wear out chains and cassettes together, since they mesh and
function together as they wear. *To extend the life of a cassette, I
rotate three chains on it - swapping chains at no more than about 500
mile intervals. *This gave me something like 10,000 miles out of the
last set of three chains and a cassette, and, in a pinch, I could
still put that set back in service - at least for a while.

That's a technique I've never tried but which seems to make quite a
bit of sense. But (thinking out loud) I wonder whether it would
provide more longevity than simple using a new chain after every 3,333
miles. I would guess that most of my cassettes have lasted through
several chains (many K miles per chain) but I have never carefully
documented all the swaps along the way.

Part of the thing is that I remove the chain rather frequently for
cleaning, but of course am not always eager to roll up my sleeves and
scrub, so it's really nice to drop the chain in a coffee can, grab a
clean one to put on the bike, lube it up and ride. Then I can soak
and scrub the dirty chain when I get around to it (sort of like
replacing inner tubes and patching the flat one[s] when I get around
to it).

It also serves to keep the cassette and chain(s) in relative harmonic
pitch throughout their service life, for whatever that's worth. I
guess I let one chain go too far (though it didn't seem to measure out
as such), got the highly disconcerting skipping on my favorite cog
with a new chain, and am trying to avoid that ever happening again.

(Yes, I know the cleaning and scrubbing is a weird ritual, but humor
me.)