Shift quality on different frames
06-07-08, 07:13 PM
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Shift quality on different frames
I'm looking to buy a 105 equipped road bike and have been trying out as many different brands as possible. One thing I've noticed is that the shift quality on some bikes I've ridden is remarkably better than others even though they have all been equipped with basically the same parts.
Do frames have any affect on shifting performance or is the discrepancy just caused by the bikes being poorly set up?
Do frames have any affect on shifting performance or is the discrepancy just caused by the bikes being poorly set up?
06-07-08, 07:30 PM
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You are probably testing a haphazardly set up bike that was meant to be a demo bike.....
Just make sure your brakes work before you go.
Just make sure your brakes work before you go.
06-07-08, 07:32 PM
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frame, no...
out of adjustment... yes
out of adjustment... yes
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06-07-08, 07:34 PM
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A fine tuned drive train makes all the diffrence in the world.
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06-07-08, 07:56 PM
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Assuming that the chain line is about the same, ensure that you are comparing shifts between the same cogs on the same type of cassette. There can be a noticable difference when you shift between cogs with a 1 tooth separation compared to a 2 or 3 tooth separation.
06-07-08, 09:22 PM
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They were out of adjustment.
I bought a bike that shifted like crap on its test ride because I knew it would only be an adjustment thing. As they always do for bikes about to go out the door, the shop adjusted the drivetrain, and I rode out with a sweet-shifting bike.
I bought a bike that shifted like crap on its test ride because I knew it would only be an adjustment thing. As they always do for bikes about to go out the door, the shop adjusted the drivetrain, and I rode out with a sweet-shifting bike.
06-07-08, 09:54 PM
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I'm looking to buy a 105 equipped road bike and have been trying out as many different brands as possible. One thing I've noticed is that the shift quality on some bikes I've ridden is remarkably better than others even though they have all been equipped with basically the same parts.
Do frames have any affect on shifting performance or is the discrepancy just caused by the bikes being poorly set up?
Do frames have any affect on shifting performance or is the discrepancy just caused by the bikes being poorly set up?
The shifters can be adjusted, and any new shifters should work fine. If you find a frame you like and it isn't shifting properly, have the mechanic dial it in for you.
06-07-08, 09:56 PM
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I've always wondered if frame flex can help with shifting enough to move a chain just that little bit to get it to shift properly even if the shifting isn't dialed in spot on. I know it's probably a moot point because the deflection is so little, but it'd be interesting to see what it can do. If there was a TERRIBLY flexy frame with really flexy chainstays, could it ghost shift due to flex. Hm....
