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How do MotoGP riders shift?

This is a discussion on How do MotoGP riders shift? within the Daily Ride forums, part of the General Forums category; I assume the upshifts are controlled by some simple interupt of the ignition/fueling connected to the shifter somehow but when looking at the downshifts it ...

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  1. #1
    Up-And Comer CFar's Avatar
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    How do MotoGP riders shift?

    I assume the upshifts are controlled by some simple interupt of the ignition/fueling connected to the shifter somehow but when looking at the downshifts it looks like they're just working the clutch (fast!) and going down through the gears.

    Are they rev matching at all or are they relying solely on a slipper clutch or something even more advanced?

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  3. #2
    Site Elder fast_stakes's Avatar
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    Yes........Each rider has their own style. Some will actually rev match, some will use the slipper clutch, and some of the engine management systems on there allow the engine to hardly have any engine braking making the downshifts a little more seemless.
    Sometimes it takes a whole tankful of fuel before you can think straight.

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  4. #3
    Up-And Comer CFar's Avatar
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    Ahh style, something I'm not used to when watching f1

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    Site Elder jsmith8008's Avatar
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    I think they program their ECU's to automatically rev match. So each time they tap down it blips the throttle. That would be my guess anyway. The new 370z does that.
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    Up-And Comer vladimer's Avatar
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    not sure how, but i once saw how rossi shifted when the camera swiched showing his left hand. he basically pulled the clutch in just by a fraction when shifting down. i guess shifting up doesnt differ a lot from a normal bike allowing to shift without the clutch.

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    Site Elder Doug Hyde's Avatar
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    MotoGP riders are in another universe. They do things we'd think is totally wrong, even if we could do them ourselves, which we can't 'cuz we're mere mortals. For instance, with the current traction control bikes, they clamp down on the rear brake while accelerating out of corners (which begins at crazy lean angles before they even begin standing the bike up) to increase front tire traction. The increased front traction can cause the front to chatter, so they smooth that out by modulating the front brake. All at full throttle mind you.
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  8. #7
    Up-And Comer ShawnKing's Avatar
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    Quote Originally Posted by CFar View Post
    I assume the upshifts are controlled by some simple interupt of the ignition/fueling connected to the shifter somehow but when looking at the downshifts it looks like they're just working the clutch (fast!) and going down through the gears.
    And remember that professional race bikes are set up opposite of our street bikes - they click down to go up in gears and click up to go down in gear....

    It's so they can shift up while coming out of a turn. It's easier (and safer) to do it when the rider only has to tap down on the gears rather than trying to hook their foot under the peg while leaned over.
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  9. #8
    Up-And Comer tatkobarba's Avatar
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    I don't know about MotoGP, but in WSBK and other they use some like this:

    http://www.powercommander.com/powerc...k_shifter.aspx

  10. #9
    Rising Star Z0RR0's Avatar
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    Quote Originally Posted by Doug Hyde View Post
    MotoGP riders are in another universe. They do things we'd think is totally wrong, even if we could do them ourselves, which we can't 'cuz we're mere mortals. For instance, with the current traction control bikes, they clamp down on the rear brake while accelerating out of corners (which begins at crazy lean angles before they even begin standing the bike up) to increase front tire traction. The increased front traction can cause the front to chatter, so they smooth that out by modulating the front brake. All at full throttle mind you.
    I do that on my morning commute.

  11. #10
    Site Elder fast_stakes's Avatar
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    Quote Originally Posted by ShawnKing View Post
    And remember that professional race bikes are set up opposite of our street bikes - they click down to go up in gears and click up to go down in gear....

    It's so they can shift up while coming out of a turn. It's easier (and safer) to do it when the rider only has to tap down on the gears rather than trying to hook their foot under the peg while leaned over.

    Actually it depends on the rider preference. Alot of racers out there actually prefer to have the gear selection set up the standard way, not GP.
    Sometimes it takes a whole tankful of fuel before you can think straight.

    “Insisting on perfect safety is for people who don’t have the balls to live in the real world.”
    – Mary Shafer, NASA Ames Dryden


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