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Thread: Converting 9sp to 8sp questions

  1. #1
    Mojo Road Warrior TXRAiDR's Avatar
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    Converting 9sp to 8sp questions

    This is a two part question. I'm having to upgrade to 9 speed components, but don't want to go completely 9 speed. My 8sp FD went south on me and now I've got a 9 sp XT FD. I'm thinking if I keep the H & L adjusting bolts stopped, I shouldn't have a problem with the chain jumping off the big ring or the small ring. Any insight on that?

    Second part of the question: Would the same idea work with the 10 speed to 9 speed Campy road group? I'm not a big on the 10 speed group there (for the same reason I'm not too big on the 9 speed mtb groups: to dialed in and gets clogged up easily). Plus, the 10 speed chain is kinda expensive. Any insight from the panel?
    "As long as I breathe, I attack"-Bernard Hinault
    I've got more skill on two wheels than the majority of people have on two legs.

  2. #2
    MoJo|oJoM
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    8 sp Rulez!!!!!

    I have:
    9 sp XT fd
    9 sp XT rd
    9 sp XT cranks
    with 8 sp SRAM chain
    8 sp XTR cassette
    and 8 sp XT shifters

    It's a great setup that works great also!

    I have no idea about the road groupo though...

  3. #3
    Yo
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    TechniKal's Avatar
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    Deraillers are dumb devices. They only move the way the shifter tells them to. A '9 speed' derailler will work just fine on an otherwise 8, 7, 6, 5, etc speed drive train. Shimano claims to have 'optimized' the new '9 speed' FD to work better with the more narrow 9 speed chains. I personally think that claim is pure marketing BS - the new FD will work perfectly with an older 8 speed drivetrain.

    All you need to run 8 speed is an 8 speed rear shifter and cassette - everything else can be '9' speed. I've even heard of some folks using 9 speed shifters on 8 speed cassettes - just setting the limit screws on the RD to 'block out' the last shift. Apparently there is enough play in the top jockey wheel to make it work...

    That said, I don't think 9 speed is evil. I didn't want to move away from 8 speed, but now that I've got 2 years on 9 speed stuff, I can't say I notice a difference.

  4. #4
    Yo
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    TechniKal's Avatar
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    Oh - on the campy stuff. I'd sell the 10 speed stuff on ebay, buy new a new 9 speed group and spend the left over cash on beer. I can't imagine having a component group that makes me spend $100 on a freaking chain tool, and then ~$50 for replacement chain... BTW: I am a Shimano bigot...

  5. #5
    Mojo Road Warrior TXRAiDR's Avatar
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    That's what I had planned to do with the FD on my mtb, just use the lock out screws to limit how far in/out the FD swings. Simple!

    The reason I ask for the 9/10 speed campy group is just that: PRICE! I can get the 9 sp group for the same price (little less if I nit pick and do some work across the net), which would suffice my needs and wallet. My problem with 9 speed mtb and 10 speed road is that the tolerances get narrower, and the price goes up. Right on the dot with the $100 chain tool. The chain itself is something like $40, which, to me anyway, is alot for a chain!
    "As long as I breathe, I attack"-Bernard Hinault
    I've got more skill on two wheels than the majority of people have on two legs.

  6. #6
    try explaining the internet to a bum!
    MoJo SuppoRteR
    carlos's Avatar
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    you may have to use an 8 sp chain on that 8sp cassette. the IG and HG groups are incompatible so make sure to check that. the lockring on the cassette will tell you if it's either of these.

    if you get a SRAM chain, they will work on either.

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