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Old 09-23-06, 07:39 PM   #1
Turboem1
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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
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Old 09-23-06, 07:59 PM   #2
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Never been able to achieve it myself.
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Old 09-23-06, 08:17 PM   #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...
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Old 09-23-06, 09:01 PM   #4
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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...
+1 Even worse on a smaller frame.
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Old 09-23-06, 09:15 PM   #5
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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
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Old 09-23-06, 11:46 PM   #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.
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Old 09-24-06, 08:44 AM   #7
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To use all the gears silently, you need a Campagnolo group.
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Old 09-24-06, 12:26 PM   #8
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I can get big-big, small-small on my 105 using a triple shifter on a double crank.
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