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Thread: 1x8 vs 1x9

  1. #1
    ass hatchet slopvehicle's Avatar
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    1x8 vs 1x9

    I'd like to build up an old mountain frame into a 1x8 or 1x9 commuter from parts I've got lying around. Which setup would be more reliable?


    the 8-speed option:

    40t chainring
    13-25 Sora cassette
    8sp Alivio right shifter pod
    Deore rear derailleur

    the 9-speed option:

    40t chainring
    11-34 LX cassette
    9sp Deore right shifter pod
    Deore rear derailleur


    fwiw I don't really need the added range of the 9-speed setup for commuting. But the lure of the higher-quality Deore pod (as opposed to the Alivio pod) is tempting. Will the 9-speed be any more likely to throw a chain, given the wider range cassette and more flexible / narrow links?

  2. #2
    Senior Member Bill Kapaun's Avatar
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    My question would be-
    Is the 40/13 enough gear for you?
    For commuting, I'd go for the 13-14-15 top gears vs the 11-13-15 for "my" bike. I have a 48T BIG Ring though. The 48/13 works out good for me for my highest gear. (1 gear higher than I expect to use)
    I like close steps for my 'cruising" gears.
    YMMV

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    Senior Member Steev's Avatar
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    I'd go with the 8 speed for the wider cheaper chains.

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    hello roadfix's Avatar
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    It all depends on which indexed shifter you already have in your junk box.

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    Quote Originally Posted by roadfix View Post
    It all depends on which indexed shifter you already have in your junk box.
    roadfix makes a good point.

    An alternative may be to combine cogs from both cassettes and come up with a 13-26. My favorite 9-speed cassette is a 13-26 that I made by using the middle cogs out of a 12-34 XTR cassette and other cogs I had lying around.

    Al

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    Sometimes knows stuff. rmfnla's Avatar
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    Quote Originally Posted by roadfix View Post
    It all depends on which indexed shifter you already have in your junk box.
    My impression is that he has both shifters and wants opinions on which to use.

    Did I miss something?
    Today, I believe my jurisdiction ends here...

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    hello roadfix's Avatar
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    Quote Originally Posted by rmfnla View Post
    My impression is that he has both shifters and wants opinions on which to use.

    Did I miss something?
    I think you're right...

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    ass hatchet slopvehicle's Avatar
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    actually shifters are the one thing I don't have. I have neither type!

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    ass hatchet slopvehicle's Avatar
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    Quote Originally Posted by Bill Kapaun View Post
    My question would be-
    Is the 40/13 enough gear for you?
    For commuting, I'd go for the 13-14-15 top gears vs the 11-13-15 for "my" bike. I have a 48T BIG Ring though. The 48/13 works out good for me for my highest gear. (1 gear higher than I expect to use)
    I like close steps for my 'cruising" gears.
    YMMV
    I currently commute between NE and NW Portland every day. it's relatively flat, and the worst I ever have to climb is the approach to the Broadway bridge. right now I have this particular bike set up as a 40x17 singlespeed. It's a pretty low gear, but it keeps my commuter bike from doing much other than just commuting. I think a few more gears in either direction would make it much more flexible.

  10. #10
    Sometimes knows stuff. rmfnla's Avatar
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    Quote Originally Posted by slopvehicle View Post
    actually shifters are the one thing I don't have. I have neither type!
    Figures.

    BTW, the reason I haven't tossed in my $.02 is I have really bad bike-itis and my way of approaching this project would be to have a custom frame built and outfit it with as much titanium as I could find.

    I used to be this way with cars until I went to the Henry Ford clinic; I'm looking for similar help in the cycling world.
    Today, I believe my jurisdiction ends here...

  11. #11
    Gone, but not forgotten Sheldon Brown's Avatar
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    Quote Originally Posted by slopvehicle View Post
    I'd like to build up an old mountain frame into a 1x8 or 1x9 commuter from parts I've got lying around. Which setup would be more reliable?

    ...Will the 9-speed be any more likely to throw a chain, given the wider range cassette and more flexible / narrow links?
    No. 9-speed cassettes are no wider than 8-speeds, so the chain angle won't be any worse.

    Sheldon "Hope It Has Nice Long Chainstays" Brown
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