Should a mtn bike be able to shift multiple gears at once?
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Should a mtn bike be able to shift multiple gears at once?
I'm going to be testing a bike and I need to know if a bike can handle that.
Also - Should it be able to handle it when you put force on the peddles and shift at the same time?
Thanks
Also - Should it be able to handle it when you put force on the peddles and shift at the same time?
Thanks
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Some only go one click at a time, either in one direction or both.
You should be able to shift front and back derailleurs at once.
Whether it should be able to handle it is far different from should you do it to any bike, especially if it isn't your own.
The pedals should be moving when you shift and lightly loaded. Dropping to the granny ring under load is just sorta asking for a chainsuck episode.
Be nice to bikes, they'll treat you better for it.
Ron
You should be able to shift front and back derailleurs at once.
Whether it should be able to handle it is far different from should you do it to any bike, especially if it isn't your own.
The pedals should be moving when you shift and lightly loaded. Dropping to the granny ring under load is just sorta asking for a chainsuck episode.
Be nice to bikes, they'll treat you better for it.
Ron
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Thanks I've always wondered these things because usually most bikes can't handle it so thats good to know
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Typically it depends on the shifters. Here's a basic breakdown...
And as others have said, double-shifting (shifting front and rear simultaneously) is supported but not often recommended... especially under heavy offroad jouncing.
- Friction Thumbshifter - multiple shifts in both directions are possible but you have to "know how to shift" meaning you need to feel yourself into the gears
- Indexed Thumbshifter - multiple shifts in both directions are possible and each gear will click into place
- GripShifters/Twistshifters - same as Indexed Thumbshifters
- 1st and 2nd Generation RapidFire Shifter and Dual-Control - multiple shifts (usually a limit of 3) in the direction of pull are possible (upshifting chainrings or downshifting cassette for high-normal; upshifting chainrings or upshifting cassette for low-normal) but only a single shift is possible in the cable-release direction (downshifting chainrings or upshifting cassette for high-normal; downshifting chainrings or downshifting cassette for low-normal)
- 3rd Generation RapidFire Shifter (Dual-Release) - multiple shifts in either direction are possible (usually a limit of three in the pull direction and two in the release direction - shifting direction as per hi/lo-normal biasing)
And as others have said, double-shifting (shifting front and rear simultaneously) is supported but not often recommended... especially under heavy offroad jouncing.
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Originally Posted by khuon
Typically it depends on the shifters. Here's a basic breakdown...
And as others have said, double-shifting (shifting front and rear simultaneously) is supported but not often recommended... especially under heavy offroad jouncing.
- Friction Thumbshifter - multiple shifts in both directions are possible but you have to "know how to shift" meaning you need to feel yourself into the gears
- Indexed Thumbshifter - multiple shifts in both directions are possible and each gear will click into place
- GripShifters/Twistshifters - same as Indexed Thumbshifters
- 1st and 2nd Generation RapidFire Shifter and Dual-Control - multiple shifts (usually a limit of 3) in the direction of pull are possible (upshifting chainrings or downshifting cassette for high-normal; upshifting chainrings or upshifting cassette for low-normal) but only a single shift is possible in the cable-release direction (downshifting chainrings or upshifting cassette for high-normal; downshifting chainrings or downshifting cassette for low-normal)
- 3rd Generation RapidFire Shifter (Dual-Release) - multiple shifts in either direction are possible (usually a limit of three in the pull direction and two in the release direction - shifting direction as per hi/lo-normal biasing)
And as others have said, double-shifting (shifting front and rear simultaneously) is supported but not often recommended... especially under heavy offroad jouncing.
actually 2nd gen rapid fire shifters allow you to pull 4 gears at a time
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Originally Posted by gmoneyhobbit
actually 2nd gen rapid fire shifters allow you to pull 4 gears at a time
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Originally Posted by jim-bob
I can't stand trigger shifters. I'm slowly warming up to indexing, though.
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3 clicks ...
Originally Posted by khuon
And as others have said, double-shifting (shifting front and rear simultaneously) is supported but not often recommended... especially under heavy offroad jouncing.
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Originally Posted by khuon
I think it's interesting to note that many people criticised Shimano's 1st gen RFs for being push-push which is why they came out with triggers on the RF+. Now it seems everyone's excited about having a pushable extension for the release. Shimano's new Dual-Release and Dual-Control levers as well as SRAM's trigger shifters allow you to push for release.
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Originally Posted by willtsmith_nwi
I do it all the time.
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Originally Posted by sphynx_000
what do you mean push to release, same as push-push?
release tension, and switch a gear?
release tension, and switch a gear?
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Originally Posted by jim-bob
I still haven't used a finer shifter than the first-gen XC Pro thumbshifters. Mmmm, retrofriction.
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