R
Rosco
Guest
In an earlier post I described how I wanted to temporarily
take parts off an old bike (1988 vintage Dura-Ace 7 speed)
and move them to a new one for a while. The eventual goal
is to turn the new bike into a Campagnolo 10 speed (when
funds allow), and return the old parts back to their
original bike.
The next problem I need to solve is rear wheel/cassette
compatibility. My current rear wheel is a 126mm spaced Mavic
cartridge sealed bearing hub with a 7 speed freewheel. The
new frame uses non-bendable materials, so cold setting the
rear really isn't an option (an even if it was, that
approach doesn't excite me). I've been lead to believe that
converting that hub to 130mm spacing would be fairly
expensive and difficult. Since my longer term goal is to go
Campagnolo 10 speed, I don't have a problem investing in a
Campagnolo rear wheel in the short term as long as it can be
made to work with my Dura-Ace 7 speed equipment, and
naturally be used as a 10 speed setup when I make the big
switch latter on.
It seem like the Wheels Mfg part (Shift-8 kit) can convert
from 9 speed Campagnolo to 8 speed Campagnolo. From looking
at some reference tables on Sheldon Brown's website
(http://www.sheldonbrown.com/k7.html) it appears that
Campagnolo 8 speed and Shimano 7 speed have exactly the same
center-to-center spacing between sprockets (5mm). If this is
correct, it seems natural to do this conversion, but only
use 7 of the 8 sprockets that remain on the cassette. Do I
have this right? I've also seen a seller of this kit suggest
it could also be used to convert from Campagnolo 10 speed to
Campagnolo 8 speed (and Shimano 7 speed by my extension)
since the cog width of Campagnolo 9 and 10 speeds are the
same. Starting from 10 speed has the advantage that I
eventually end up with the cassette I want after doing the
total Campagnolo conversion latter on.
It appears like you'd want to start with a Veloce 10 speed
cassette. The most natural one to choose is the:
13-14-15-16-17-18-19-21-23-26. My existing 7 speed freewheel
is: 13-14-15-----17-----19-21----24. So to create something
similar, I could use the following: 13-14-15-----17-----19-21-23-
26, from the Veloce, but not actually have the deraileur
engage the 26.
Am I think about this in the right way? Also in doing the
conversion, can you eliminate any 2 of the existing
sprockets or are there restrictions such as being required
to use the existing smallest sprocket?
Lastly, after doing this conversion do I use a 7, 8 or 10
speed chain?
take parts off an old bike (1988 vintage Dura-Ace 7 speed)
and move them to a new one for a while. The eventual goal
is to turn the new bike into a Campagnolo 10 speed (when
funds allow), and return the old parts back to their
original bike.
The next problem I need to solve is rear wheel/cassette
compatibility. My current rear wheel is a 126mm spaced Mavic
cartridge sealed bearing hub with a 7 speed freewheel. The
new frame uses non-bendable materials, so cold setting the
rear really isn't an option (an even if it was, that
approach doesn't excite me). I've been lead to believe that
converting that hub to 130mm spacing would be fairly
expensive and difficult. Since my longer term goal is to go
Campagnolo 10 speed, I don't have a problem investing in a
Campagnolo rear wheel in the short term as long as it can be
made to work with my Dura-Ace 7 speed equipment, and
naturally be used as a 10 speed setup when I make the big
switch latter on.
It seem like the Wheels Mfg part (Shift-8 kit) can convert
from 9 speed Campagnolo to 8 speed Campagnolo. From looking
at some reference tables on Sheldon Brown's website
(http://www.sheldonbrown.com/k7.html) it appears that
Campagnolo 8 speed and Shimano 7 speed have exactly the same
center-to-center spacing between sprockets (5mm). If this is
correct, it seems natural to do this conversion, but only
use 7 of the 8 sprockets that remain on the cassette. Do I
have this right? I've also seen a seller of this kit suggest
it could also be used to convert from Campagnolo 10 speed to
Campagnolo 8 speed (and Shimano 7 speed by my extension)
since the cog width of Campagnolo 9 and 10 speeds are the
same. Starting from 10 speed has the advantage that I
eventually end up with the cassette I want after doing the
total Campagnolo conversion latter on.
It appears like you'd want to start with a Veloce 10 speed
cassette. The most natural one to choose is the:
13-14-15-16-17-18-19-21-23-26. My existing 7 speed freewheel
is: 13-14-15-----17-----19-21----24. So to create something
similar, I could use the following: 13-14-15-----17-----19-21-23-
26, from the Veloce, but not actually have the deraileur
engage the 26.
Am I think about this in the right way? Also in doing the
conversion, can you eliminate any 2 of the existing
sprockets or are there restrictions such as being required
to use the existing smallest sprocket?
Lastly, after doing this conversion do I use a 7, 8 or 10
speed chain?