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 Post subject: 9 Speed Compatibility?
PostPosted: Thu Jan 22, 2009 8:38 pm 
Old School Grand Master
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Joined: Thu Jul 19, 2007 7:18 pm
Posts: 3798
Location: Staffordshire
Does a chainset have to be 9 speed specific? The chain and shifters yes I understand but the chainset?
I am rebuilding a Focus for my bro's wife and the chainset as found is a cast iron Suntour thing about as good as the also Suntour forks. Ina a word RUBBISH.

The odd thing is the rings are steel, not replaceable and 28-38-48. I just can't imagine that they were ever built with 9 speed in mind.

What do you think?

PS I'm so old I remember when Suntour made really good stuff. Any road bike whose owner was in the know used to have a Superbe Pro front mech. What happened to them?


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 Post subject:
PostPosted: Thu Jan 22, 2009 8:59 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Fri Oct 10, 2008 8:44 pm
Posts: 3584
Location: Wherever it is, I'm being just that little bit more Lance
I use an 8 speed chain and casette and Campag 10 speed chainrings on one of my road bikes. Never had any problems. You may have issues with a 9 speed chain and 6/7/8 speed chainrings as I believe the thickness of 9 and 10 speed chainrings are thinner than 7/8 speed ones. Never tried it though.


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 Post subject:
PostPosted: Thu Jan 22, 2009 9:13 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8204
Location: New Forest, UK
All chains are 3/32" inside. But 9s have thinner sides so are thinner overall.

Occasionally you get some 7/8 speed chainsets where the rings are SLIGHTLY further apart and a 9s chain can get sort of halfway between the two, sliding between the teeth and the next chainring.

Usually however it's fine.


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 Post subject:
PostPosted: Thu Jan 22, 2009 11:15 pm 
West Midlands AEC
West Midlands AEC
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Joined: Wed May 14, 2008 11:06 pm
Posts: 6266
Location: Stow on the Wold, Glos
I ran 9 speed (shifters/mechs/chain) on an old LX chainset ( the early 90` nice black one)


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 Post subject:
PostPosted: Thu Jan 22, 2009 11:37 pm 
Retro Guru

Joined: Sun Dec 14, 2008 2:11 pm
Posts: 303
At least as far as Shimano is concerned 8 speed rings work with 9 speed chains. BTDT.


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 Post subject:
PostPosted: Thu Jan 22, 2009 11:44 pm 
Old School Grand Master
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Joined: Thu Jul 19, 2007 7:18 pm
Posts: 3798
Location: Staffordshire
Thanks chaps.


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 Post subject:
PostPosted: Thu Jan 22, 2009 11:44 pm 
Old School Grand Master
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Joined: Thu Jul 19, 2007 7:18 pm
Posts: 3798
Location: Staffordshire
Thanks chaps.


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 Post subject:
PostPosted: Fri Jan 23, 2009 9:54 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Fri Sep 26, 2008 4:30 pm
Posts: 1696
Location: Dynatech Central 8)
Got a black bottom of the range Shimano 9 speed chainset with replaceable rings you can have (came off the ex-wife's Giant) for some good karma :D

pm me your address & I'll post it on saturday.


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 Post subject:
PostPosted: Fri Jan 23, 2009 1:06 pm 
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
I've run a 1980 shimano road chainset with proshift mechs and 9 spd bar end shifters...

1988 Deore mechs, 1993 XT 48t ring, 2003 LX 9spd

As long as the chainline is good, I've personally never had much of a problem.

Just getting front mechs to shift corectly can be a pain.


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