9 speed rear derailleur

Andrew Karre said:

Since the biggest and smallest cogs aren't any farther apart on a ten-speed cassette, what is the
obstacle to using a nine-speed rear derailleur with a ten-speed shifter, cassette, and chain? Is
it the pulleys?

No, it's the marketing.

Sheldon "They Want Your Money" Brown
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Sheldon Brown said:

Quoted message said:

Since the biggest and smallest cogs aren't any farther apart on a ten-speed cassette, what is the
obstacle to using a nine-speed rear derailleur with a ten-speed shifter, cassette, and chain? Is
it the pulleys?

No, it's the marketing.

Sheldon "They Want Your Money" Brown

Is that the reason, seriously? Or is it because they genuinely want their customers to have the best
and are terribly consevative?

2001+ 9-speed rear derailleurs are virtually the same as the 10-speed versions (geometry and ratio
is the same, AFAIK). Effective width of 10sp pulley wheels is slightly narrower (different spacers).
From memory, difference is 0.2mm or 0.4mm.

~PB

andrew-<< Since the biggest and smallest cogs aren't any farther apart on a ten-speed cassette, what
is the obstacle to using a nine-speed rear derailleur with a ten-speed shifter, cassette, and chain?
Is it the pulleys? >><BR><BR>

No obstacle, just use it whether it be shimano or Campagnolo. no need to change anything. The
shifter makes sure the chain moves the correct amount these days.

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"

Qui si parla Campagnolo said:

Pete-<< Effective width of 10sp pulley wheels is slightly narrower (different spacers). From
memory, difference is 0.2mm or 0.4mm. >><BR><BR>

Nope, they are even marked 9/10s for Campagnolo...

That's the actual jockey wheels isn't it? I believe the spacers that fit into them are different.

~PB

Pete Biggs said:

Qui si parla Campagnolo said:

Pete-<< Effective width of 10sp pulley wheels is slightly narrower (different spacers). From
memory, difference is 0.2mm or 0.4mm. >><BR><BR>

Now checked: Difference is 0.4mm

Quoted message said:

Quoted message said:

Nope, they are even marked 9/10s for Campagnolo...

By effective width, I mean width of jockey wheel plus spacers (washers or whatever you call them). I
believe the spacers are different. The actual jockey wheels may be the same.

2004 Veloce 9-speed total width: 8.8mm, 10-speed Veloce: 8.4mm. See
www.campagnolo.com/pdf/spares04_A.pdf - pdf page 33 - zoom in close.

~PB

"Qui si parla Campagnolo" <[email hidden]> wrote in message
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Quoted message said:

pete-<< That's the actual jockey wheels isn't it? I believe the spacers

that

Quoted message said:

fit into them are different. >><BR><BR>

I'll look but i think the packaged pulleys, complete, are 9/10..with the

inner

Quoted message said:

bushings and covers.

There are 8, 9, and 10sp Campag. pulleys available (source, QBP website). I know of no 9/10sp
pulleys (strange, as the new derailleurs are s'posed to be
9/10).

Robin Hubert

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

Quoted message said:

andrew-<< Since the biggest and smallest cogs aren't any farther apart on

a

Quoted message said:

ten-speed cassette, what is the obstacle to using a nine-speed rear derailleur with a ten-speed
shifter, cassette, and chain? Is it the pulleys? >><BR><BR>

No obstacle, just use it whether it be shimano or Campagnolo. no need to

change

Quoted message said:

anything. The shifter makes sure the chain moves the correct amount these

days.

Quoted message said:

I like that: "these days."

Hah! Mechanic humor!

Mike

Quoted message said:

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"