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Thread: Going airborne

  1. #1
    LUW
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    Listen! Going airborne

    Is it my impression or is it harder to catch more air with a 29er then with a 26er ?

    My 29er is lighter then my SPZ '95 Stumpy, both are HT, but I can bunny hop more easily and catch more air over fast bumps with it then with my Flash. Is it just my impression, a problem with that little part that goes over the saddle or because of the frame (carbon metal matrix of the Stumpy)?

    Really not an issue, I'm just curious .
    Cheers!
    Luciano
    Brazil

  2. #2
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    Your findings match mine.
    CRAMBA Chairman

  3. #3
    LUW
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    So why is it, the bigger wheels make the bike less "springy"?
    Cheers!
    Luciano
    Brazil

  4. #4
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    It's not just the bigger wheels. It's a combination of things, geometry, wheels, etc. Most 29ers have the front wheel set further forward to prevent toe overlap, longer chain stays to accommodate the big wheel, etc. Basically all the tweaks that have gone into 29er geometry over the past few years that make them a reasonably nimble fun bike to ride, have also conspired to keep them rather closer to the ground than a 26" bike.

    Anyway, your not alone. I've found that a 29er isn't as easy to get airborne. It simply isn't something that most wagon wheelers are designed for.

    Good Dirt
    "I do whatever my Rice Cripsies tell me to!"

  5. #5
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    What Squash said. It's the geometry.

  6. #6
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    I figured this was the case. I noticed the same thing. I sort of figured the larger wheels factored into it. 29's roll over things, you don't need to jump them as much from what I've found.
    -Eric
    Keeping the hardtail dream alive, one ride at a time.

  7. #7
    LUW
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    Thank God it's geometry! I was fearing it was age!
    Cheers!
    Luciano
    Brazil

  8. #8
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    The longer wheelbase is the big inhibiter, longer lever arms with the longer chain stays reduce the ability to spring off the rear end like most people

  9. #9
    mnoutain bkie rdier
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    I don't have any problem getting airborne on my 29ers. I do agree that it may be easier on a 26" though...even easier on a bmx bike....perhaps easiest on a pit bike

  10. #10
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    Forget you are on a 29er and just do it!!!! It takes a little different technique and control, but being airborne on 29ers is fun!
    I repair Carbon Fiber frames.
    http://twobrotherscycleworks.blogspot.com/

  11. #11
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    Ride Phil's World. Air a plenty!!
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    you're lucky enough.

  12. #12
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    Yeah, I'll say that my old aluminum 26" Stumpy could bunny hop pretty good (not that I am any good at it), but my steel MCR9 definitely has some *POP* in the frame - like a big spring. If my timing is good I can launch it off tiny (like 1" root) stuff and get way higher than a bunny hop. The payoff is disproportionately big. But those slightly longer chainstays make it a little harder to hop without any assisting roots/rocks.
    Just plain jumping - which I'm also not very good at - seems to be just as easy.

    -F

  13. #13
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    Quote Originally Posted by Mr.SBC View Post
    Forget you are on a 29er and just do it!!!! It takes a little different technique and control, but being airborne on 29ers is fun!
    Thats a misconception.

    Give a 29er to a DH pro such as Brian Lopes and he can most likely jump it close to, if not just as good as if he was on a 26".

    But for normal folks like us though, it is not as easy to J-hop the bigger wheels. Is still doable with some practice.

  14. #14
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    When J hopping, I find I have to get the bike 1.5 inches higher than a 26.
    Sometimes, you need to go fast enough that the trail is a blur to find clarity. -- Wild Bill

  15. #15
    LUW
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    Yeah, that's my impression too: it seams I have way more bike to pull up, therefor I can't get the tires as high as I would get with the Stumpy.

    The size and geometry offer a very reasonable explanation, but wouldn't the fact that now I'm on a carbon frame also play a part? Since that metal matrix frame of the Stumpy is so rigid?
    Cheers!
    Luciano
    Brazil

  16. #16
    Old Punk
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    Do a vimeo or YouTube search for Chris Akrigg. The dude rides street, trials and freeride on all kinds of bikes. His vids on a flatbar 700c fixie are insane.
    '09 Specialized Rockhopper expert 29
    Born 26" trials
    '07 Specialized Allez

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