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  1. #1
    Banned. Turboem1's Avatar
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    Should you be able to use every gear combo?

    Say on a tiagra 9 speed with a triple up front. Should you be able to get in every gear without rubbing or the chain skipping a little? I dont mean if it is smart to use some of these combos but on a properly adjusted bike will the big/big and small/small combos cause any problem?

    Just curious. Thanks

  2. #2
    CDG
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    Never been able to achieve it myself.

  3. #3
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    No chain rub on a triple? The Holy Grail of adjustments. They can't make it happen with a Dura-Ace double...

  4. #4
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    Quote Originally Posted by cerveloboy
    No chain rub on a triple? The Holy Grail of adjustments. They can't make it happen with a Dura-Ace double...
    +1 Even worse on a smaller frame.

  5. #5
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    Quote Originally Posted by Turboem1
    Say on a tiagra 9 speed with a triple up front. Should you be able to get in every gear without rubbing or the chain skipping a little? I dont mean if it is smart to use some of these combos but on a properly adjusted bike will the big/big and small/small combos cause any problem?

    Just curious. Thanks
    With the chain on the middle ring you should be able to use all 9 in the back by selecting one or the other middle clickstop positions.

    Al

  6. #6
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    You might be able to use all of the gears with some trimming. There isn't much practical use, as the big-big and small-small rations are probably replicated by other gear combinations.

    Apparently, Campy shifters allow more fine-grained adjustment of the FD, so this is possible.

  7. #7
    fmw
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    To use all the gears silently, you need a Campagnolo group.

  8. #8
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    I can get big-big, small-small on my 105 using a triple shifter on a double crank.
    Il faut de l'audace, encore de l'audace, toujours de l'audace

    1980 3Rensho-- 1975 Raleigh Sprite 3spd
    1990s Raleigh M20 MTB--2007 Windsor Hour (track)
    1988 Ducati 750 F1

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