Campy 9 speed wheelsets - Triathlon Week

10-04-2004, 09:38 AM

Hello!
I have a few questions that hopefully the Campy Experts on these
groups can help me out on:

My winter training bike is a mid-90s CroMoly frame Bianchi I upgraded
with Campy triple Racing T and newer Veloce 9 speed shifters. The
cassette/rear hub is the original 8 speed and works OK with the 9
speed shifters, I just have that extra "click". My other bike
(Kestrel Talon) also has Campy triple Racing T and Centaur 9 speed
shifters and I hope to eventually get a pair of Zipp 404 carbon wheels
to race with on this bike.

Ultimately, I would like to have 9-speed cassettes on both wheelsets
so that I could swap wheelsets between bikes. That's where my
question comes in as far as advice on how to do this. The 8 speed
gears on my current wheel has 8 notches to slide the gear onto the
splines on the hub (I think it is called the EXA-Drive system). From
pictures I have seen, it looks like newer 9 speed cassettes have a
different spline pattern than the 8 speed. I can't tell from the
photos whether these 9 speed cassettes would work on my 8 speed hub.
Do I need to replace the 8 speed hub to work with all 9 speed
cassettes? Are there different spline patterns between the different
Campy 9 speed cassettes (e.g., Veloce and Chorus)? Zipp's website
says that the 404 wheels are compatabile with all Campy 9 and 10 speed
systems, so I definitely want to make sure I get the right cassette(s)
to use on these wheels. The cassette I am seriously considering for
its low range gearing is the Veloce 9 speed 13x28.

Thanks in advance for your help and advice!
Andrew Hall
Lancaster, OH

10-04-2004, 12:46 PM

On Mon, 04 Oct 2004 09:38:53 -0700, Andrew Hall wrote:

> My winter training bike is a mid-90s CroMoly frame Bianchi I upgraded
> with Campy triple Racing T and newer Veloce 9 speed shifters.

Snip using Campy 9 speed cassette on 8 sp hub.

It is not a straight fit on.
People will say it is possible by filing away some bits on the
hub/cassette,and it is then held on the hub by about 2 turns on the lock
nut(the 9sp is lightly wider) - but is that really worth it?
Another way is if you can get an older (yr 2000?) 9sp rear hub, you can
take off the freewheel/freehub from that, and fit it to the 8sp wheel, and
you then have a 9sp wheel.
It may be more cost effective to just get a new wheel built up in place of
the old one.
All 9 and 10 sp campy cassettes have the same spline pattern, so there are
no problems with swapping between wheels.
Alan.

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10-04-2004, 01:37 PM

In article <[Only registered and activated users can see links. ]>,
Andrew Hall <[Only registered and activated users can see links. ]> wrote:
>I can't tell from the
>photos whether these 9 speed cassettes would work on my 8 speed hub.
>Do I need to replace the 8 speed hub to work with all 9 speed
>cassettes?

The 9 speed splines share the outside diameter but have a smaller inside
diameter so they won't fit on an 8-speed freehub. Campagnolo built 9-speed
frehubs which fit the old hubs (I swapped my Chorus 8 speed parts for
Record-Ti 9-speed) although they're getting scarce (and therefore
expensive - say $100 for a Chorus/Record part).

>Are there different spline patterns between the different
>Campy 9 speed cassettes (e.g., Veloce and Chorus)?

No.

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