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PostPosted: Fri Oct 15, 2010 6:01 pm 
Old School Grand Master
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Joined: Mon Sep 28, 2009 8:16 pm
Posts: 3272
Location: north wales
Hi
Can anyone shed some light on this question
I have a problem with shifting on a campag cassette (mirage)
Originaly 9-speed of which i have replaced with an 8-speed cassette,at the middle of the cassete gears it always jumps.no matter how much i adjust and re-set
i have 8-speed ergos,what can i do!!!
Any ideas


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PostPosted: Fri Oct 15, 2010 7:29 pm 
Old School Hero
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Joined: Mon Feb 22, 2010 11:25 pm
Posts: 232
Location: North London
I recently fitted mirage 8 speed ergo's to my Alan cross bike,some things to check;
Is the rear mech. 8 speed?
Did you get the cassette spacing right?-width of sprocket+width of spacer=5mm.
Is the gear hanger bent inwards?
As always try the cheap easy stuff first :D


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PostPosted: Fri Oct 15, 2010 10:19 pm 
Retro Guru

Joined: Fri Apr 28, 2006 8:42 pm
Posts: 783
Location: Brighton
old chain, new cassette?


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PostPosted: Sat Oct 16, 2010 3:12 am 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 26157
Location: Moomin Valley
something stuck in the cassette

stiff chain link

kink in the cable


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PostPosted: Mon Oct 18, 2010 10:55 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8204
Location: New Forest, UK
Campag advise strongly against fitting 8 speed cassettes to 9 speed hubs. The 9s hub body is alloy, and to spread the load it has deeper splines. Your 8s cogs will be digging into the freewheel body.

I suspect that your skipping problem is one worn cog, but do yourself a favour and remove the 8s cassette before you destroy the hub. If you want to run 8s, buy a 9s cassette, leave out the largest cog and use the 8s spacers.


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PostPosted: Mon Oct 18, 2010 11:16 am 
Retro Guru

Joined: Wed Dec 10, 2008 9:19 am
Posts: 2094
Location: Sheffield, top city
dont 9 speed cassettes have the largest 3 cogs on a carrier which then mounts onto the freehub, ie cant separate them? I know 105 and upwards are like that


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