Chain rubbing on RD

Günther Schwarz said:

New bike with:
steel frame, generous 43cm chainstays, BB-UN73 110mm, FC-A410 with T.A.
33/48 chainrings, SRAM PC991, FH-6500, HG70 13-25 nine speed cassette,
Campagnolo Veloce long cage derailleur, 10 speed version.

Problem:
When in the two smallest sprockets the chain is rubbing against the
inner cage plate of the derailleur next to the lower pulley. This
happens also when in the large chainwheel. As far as I can tell the
chain line is correct. With a new frame it might be considered to be
unlikely that the hanger is bent.
As the bike is new it will go to my LBS next week. They will probably
find a way to solve the problem. I'm just curious if this is a
common problem with the slightly wider nine speed chain on a 10 speed
derailleur.

Günther

well, assuming the hanger is straight, and being new is /no/ guarantee,
the likely candidate is /definitely/ the skinny derailleur cage/thicker
chain. the pulley wheel covers, those little dished aluminum things,
are much thinner on the 10s, hence the cage is more closely spaced. you
can buy pulleys for 9-speed with the thicker covers, so retrofit
accordingly. and you can use the covers again on the spare pulleys
you've just bought when the originals' bearings wear out - which in my
experience, is after only one season. [imo, the best long cage rear
derailleur out there is shimano xt. bullet proof ceramic bearings take
any amount of abuse. last forever.]

also bear in mind: the cassette spacing for shimano is not /quite/ the
same as campy. while i used a shimano cassette and campy shifter
together for years without any /real/ problems, alignment is not
absolutely perfect, so if i were ever to go back to campy brifters [most
unlikely given their unreliability] i'd consider a wheel system with a
cheapo campy cassette.

jim beam said:

Günther Schwarz said:

New bike with:
steel frame, generous 43cm chainstays, BB-UN73 110mm, FC-A410 with
T.A. 33/48 chainrings, SRAM PC991, FH-6500, HG70 13-25 nine speed
cassette, Campagnolo Veloce long cage derailleur, 10 speed version.

Problem:
When in the two smallest sprockets the chain is rubbing against the
inner cage plate of the derailleur next to the lower pulley. This
happens also when in the large chainwheel. As far as I can tell the
chain line is correct. With a new frame it might be considered to be
unlikely that the hanger is bent.
As the bike is new it will go to my LBS next week. They will probably
find a way to solve the problem. I'm just curious if this is a
common problem with the slightly wider nine speed chain on a 10 speed
derailleur.

Quoted message said:

well, assuming the hanger is straight, and being new is /no/
guarantee, the likely candidate is /definitely/ the skinny derailleur
cage/thicker
chain. the pulley wheel covers, those little dished aluminum things,
are much thinner on the 10s, hence the cage is more closely spaced.
you can buy pulleys for 9-speed with the thicker covers, so retrofit
accordingly.

This might be a possibility. I will ask the shop to try to fit some Tacx
pulleys.

Quoted message said:

also bear in mind: the cassette spacing for shimano is not /quite/ the
same as campy.

This is another story as rubbing occurs at the lower pulley and not only
in the smallest, but also in the second sprocket. Fitting a Campagnolo
hub and cassette won't help.

Quoted message said:

while i used a shimano cassette and campy shifter
together for years without any /real/ problems, alignment is not
absolutely perfect,

Until now I'm, apart from the little problem mentioned, quite satisfied
with the setup.

Günther

Günther Schwarz said:

jim beam said:

Günther Schwarz said:

New bike with:
steel frame, generous 43cm chainstays, BB-UN73 110mm, FC-A410 with
T.A. 33/48 chainrings, SRAM PC991, FH-6500, HG70 13-25 nine speed
cassette, Campagnolo Veloce long cage derailleur, 10 speed version.

Problem:
When in the two smallest sprockets the chain is rubbing against the
inner cage plate of the derailleur next to the lower pulley. This
happens also when in the large chainwheel. As far as I can tell the
chain line is correct. With a new frame it might be considered to be
unlikely that the hanger is bent.
As the bike is new it will go to my LBS next week. They will probably
find a way to solve the problem. I'm just curious if this is a
common problem with the slightly wider nine speed chain on a 10 speed
derailleur.

Quoted message said:

well, assuming the hanger is straight, and being new is /no/
guarantee, the likely candidate is /definitely/ the skinny derailleur
cage/thicker
chain. the pulley wheel covers, those little dished aluminum things,
are much thinner on the 10s, hence the cage is more closely spaced.
you can buy pulleys for 9-speed with the thicker covers, so retrofit
accordingly.

This might be a possibility. I will ask the shop to try to fit some Tacx
pulleys.

Quoted message said:

also bear in mind: the cassette spacing for shimano is not /quite/ the
same as campy.

This is another story as rubbing occurs at the lower pulley and not only
in the smallest, but also in the second sprocket. Fitting a Campagnolo
hub and cassette won't help.

Quoted message said:

while i used a shimano cassette and campy shifter
together for years without any /real/ problems, alignment is not
absolutely perfect,

Until now I'm, apart from the little problem mentioned, quite satisfied
with the setup.

Günther

I wonder if the RD cage is straight...new or used RD?

Qui si parla Campagnolo said:

Günther Schwarz said:

jim beam said:

Günther Schwarz wrote:
> New bike with:
> steel frame, generous 43cm chainstays, BB-UN73 110mm, FC-A410 with
> T.A. 33/48 chainrings, SRAM PC991, FH-6500, HG70 13-25 nine speed
> cassette, Campagnolo Veloce long cage derailleur, 10 speed
> version.
>
> Problem:
> When in the two smallest sprockets the chain is rubbing against
> the inner cage plate of the derailleur next to the lower pulley.

Quoted message said:

Quoted message said:

Quoted message said:

well, assuming the hanger is straight, and being new is /no/
guarantee, the likely candidate is /definitely/ the skinny
derailleur cage/thicker
chain.

Quoted message said:

Quoted message said:

This might be a possibility. I will ask the shop to try to fit some
Tacx pulleys.

Quoted message said:

I wonder if the RD cage is straight...new or used RD?

The derailleur as well as the frame, cassette, chain and chainrings are
new. Stay tuned: I will post an update as soon as I will get the bike
back from my LBS.

Günther

Günther Schwarz said:

Qui si parla Campagnolo said:

Günther Schwarz said:

jim beam wrote:

> Günther Schwarz wrote:
>> New bike with:
>> steel frame, generous 43cm chainstays, BB-UN73 110mm, FC-A410
>> with T.A. 33/48 chainrings, SRAM PC991, FH-6500, HG70 13-25 nine
>> speed cassette, Campagnolo Veloce long cage derailleur, 10 speed
>> version.
>>
>> Problem:
>> When in the two smallest sprockets the chain is rubbing against
>> the inner cage plate of the derailleur next to the lower pulley.

Quoted message said:

Quoted message said:

> well, assuming the hanger is straight, and being new is /no/
> guarantee, the likely candidate is /definitely/ the skinny
> derailleur cage/thicker
> chain.

Quoted message said:

Quoted message said:

This might be a possibility. I will ask the shop to try to fit some
Tacx pulleys.

Quoted message said:

I wonder if the RD cage is straight...new or used RD?

The derailleur as well as the frame, cassette, chain and chainrings
are new. Stay tuned: I will post an update as soon as I will get the
bike back from my LBS.

I did get the bike back from the workshop today. They followed the
obvious route and took a Dremel tool to get rid of the tiresome parts
of the inner cage plate. No rubbing any more and everything works just
fine.

Günther

� Schwarz said:

G�nther Schwarz said:

Qui si parla Campagnolo said:

G�nther Schwarz wrote:

>jim beam wrote:
>
>
>>G�nther Schwarz wrote:
>>
>>>New bike with:
>>>steel frame, generous 43cm chainstays, BB-UN73 110mm, FC-A410
>>>with T.A. 33/48 chainrings, SRAM PC991, FH-6500, HG70 13-25 nine
>>>speed cassette, Campagnolo Veloce long cage derailleur, 10 speed
>>>version.
>>>
>>>Problem:
>>>When in the two smallest sprockets the chain is rubbing against
>>>the inner cage plate of the derailleur next to the lower pulley.

Quoted message said:

>>well, assuming the hanger is straight, and being new is /no/
>>guarantee, the likely candidate is /definitely/ the skinny
>>derailleur cage/thicker
>>chain.

Quoted message said:

>This might be a possibility. I will ask the shop to try to fit some
>Tacx pulleys.

Quoted message said:

I wonder if the RD cage is straight...new or used RD?

The derailleur as well as the frame, cassette, chain and chainrings
are new. Stay tuned: I will post an update as soon as I will get the
bike back from my LBS.

I did get the bike back from the workshop today. They followed the
obvious route and took a Dremel tool to get rid of the tiresome parts
of the inner cage plate.

ugh. would you let them "mend" your wrist watch with a dremel too?
utter butchery. get the proper parts.

Quoted message said:

No rubbing any more and everything works just
fine.

G�nther