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Thread: a 3 by 1 ?

  1. #1
    bikes are sexy Lebowski's Avatar
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    a 3 by 1 ?

    i was wondering if its mechanically feasible have one gear in the back and switch between the front 3 chain rings

    as apposed to a 1x8 setup
    [2010] Specialized P3 - [09] Origin8 Scout 29er - [08] Specialized Epic Comp - [08] Specialized Allez - [06] - Specialized SX Trail II - (((In Pieces - '08 Jamis Parker -- '07 specialized Hardrock Sport -- 2005 KHS DJ200)))

  2. #2
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    If your one gear in the back was centered with the middle gear in front.

  3. #3
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    Sure, just use a singlespeed chain tensioner on the rear.

    Irony, though- A cheap old derailer would be cheaper than most singlespeed tensioners.

  4. #4
    Last one to the top... Little Darwin's Avatar
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    Also rear shifting usually performs better than front shifting...

    But, as others have said, with a chain tensioner, it should work.

  5. #5
    Senior Member Retro Grouch's Avatar
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    I'm thinking it would be harder to do than it sounds. All of the single speed freewheels that I'm aware of require a wider chain. That's going to complicate your front derailleur operation and it may not work with your chain tensioner hardware either.

  6. #6
    cab horn
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    Quote Originally Posted by Retro Grouch View Post
    I'm thinking it would be harder to do than it sounds. All of the single speed freewheels that I'm aware of require a wider chain. .
    What.

    Shimano makes a perfectly good 3/32 freewheel $20, dicta, ACS. All fairly inexpensive and easiily acquired. Lots of cheaper/more expensive options as well (ENO). Not rare or hard to find by any stretch of imagination.

    Since the OP doesn't want to be clear on his question, we can only assume he's either stacking a singlespeed freewheel on a freewheel rear wheel or he's using a freehub type rear wheel with cogs from a cassette spaced out. At which point the freewheel question is moot.

    Who knows.
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    A friend has this setup on his xtra-cycle with a Paul Melvin chain tensioner (insane overkill IMHO, but it's his bike) and a vintage Suntour thumb shifter. You'd have to use a tensioner with a spring that can take up the chain slack, but like Raiden said, any rear derailluer would work it you can stand to look at it.

  8. #8
    Old fart JohnDThompson's Avatar
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    Quote Originally Posted by Retro Grouch View Post
    I'm thinking it would be harder to do than it sounds. All of the single speed freewheels that I'm aware of require a wider chain. That's going to complicate your front derailleur operation and it may not work with your chain tensioner hardware either.
    BMX single freewheels are available for 3/32" chain.

  9. #9
    Team Beer Cynikal's Avatar
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    Most SS tensioners will not pull enough chain to work correctly. Actually an old RD is a better solution for this setup. That being said, a small stack of 3 cogs in the rear will shift much better but won't give you that same range.
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