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PostPosted: Sun Oct 13, 2013 12:32 pm 
Dirt Disciple

Joined: Thu Aug 18, 2011 1:28 pm
Posts: 98
Location: Evesham
Can someone explain what's needed to upgrade from 8-spd to 9 or 10-spd?

It's for my bro's Club Roost from the late '90's. It's running a single ring up front and an 8-spd cassette. It's got a Hope Ti-glide hub and disc set-up on the rear, which he's stuck with because it's not a disc frame so it has the torsion bar for the rear caliper and a special adaptor on the dropout.

I can guess it will need a new chain and front chainring, as well as the cassette and shifter, but will the wheel need to be redished?


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PostPosted: Sun Oct 13, 2013 1:39 pm 
King of the Skip Monkeys
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Location: Moomin Valley
The 8spd freehub will accept a 9spd cassette, so you would just need a chain, cassette and shifter. no need to replace the chainring unless its worn.

no dishing needed.

10 spd will be the same but you will need to replace the rear mech as 10spd uses a different cable pull.


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PostPosted: Sun Oct 13, 2013 2:30 pm 
Dirt Disciple

Joined: Thu Aug 18, 2011 1:28 pm
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Location: Evesham
Thanks cheesy, so the chain pitch is the same, it's just narrower?


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PostPosted: Sun Oct 13, 2013 3:05 pm 
King of the Skip Monkeys
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yup

I'm sure someone will help out with a more detailed answer but you get the idea.


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PostPosted: Sun Oct 13, 2013 3:11 pm 
Dirt Disciple

Joined: Thu Aug 18, 2011 1:28 pm
Posts: 98
Location: Evesham
That's great, thanks. Priced it up at around £50 with an XT shifter from CRC. 8)


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PostPosted: Sun Oct 13, 2013 7:01 pm 
Retro Guru
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Joined: Mon Mar 28, 2011 9:29 pm
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Location: Somerset
Doomanic wrote:
Can someone explain what's needed to upgrade from 8-spd to 9 or 10-spd?


What's actually needed to upgrade 8sp. Nothing. If you want to fit a weaker narrower chain that will wear out faster then you need:

for 9sp: shifter, cassette & chain.
for 10sp: rear mech, shifter, cassette & chain.


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PostPosted: Sun Oct 13, 2013 9:04 pm 
retrobike rider
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Just my little ol opinion for those who care! I have a 21 speed 3X7 1991 Team Marin and a 2011 Marin Team CXR 20 speed 2X10 and I have to say I prefer the 2X10 set up more simple and all the range of gears that I need! (Still love the 91 Team though for eva!)


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PostPosted: Sun Oct 20, 2013 7:06 pm 
Retro Guru

Joined: Wed Jun 06, 2012 11:51 pm
Posts: 314
I use a 10 speed mech on a 9 speed cassette fine......

105 mech and deore shifter


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PostPosted: Sun Oct 20, 2013 11:41 pm 
Retro Guru
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Doomanic wrote:
Thanks cheesy, so the chain pitch is the same, it's just narrower?


I think chain pitch is next on the parts manufacturers "list of things to change" :lol:


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PostPosted: Mon Oct 21, 2013 7:02 am 
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JamesM wrote:
Doomanic wrote:
Thanks cheesy, so the chain pitch is the same, it's just narrower?


I think chain pitch is next on the parts manufacturers "list of things to change" :lol:


Of course, a chain with a 1" pitch would be lighter, and less teeth on the chainrings would wear out faster. So it's clearly another upgrade!


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