front forks hit hard on a rear tire landing
  • umphlett
    Posts:11
    Joined:Wed Jun 13, 2007 6:28 pm
    front forks hit hard on a rear tire landing

    by umphlett » Fri Jul 20, 2007 10:46 am

    As i jump my CRF450r if i land on the rear tire first the frn t forks feel hard! if i land on both tires at the same time (no angle) the front is smooth as ever... i bleed the air every ride and cannot find out the issue. Are my forks to high in the clamps, maybe the forks have beld oil out. I would think oil is an issue since it lands easy if i land level. Any ideas? I have a fork oil measuring tool but dont know how far the oil should be up these forks.
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    zak13
    Posts:955
    Joined:Tue Apr 03, 2007 4:58 pm

    by zak13 » Thu Jul 26, 2007 11:27 pm

    its bec when u land on the rear the rear acts like a pivot and slams your front down
    sellin my xr100
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    crfsonly
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    by crfsonly » Fri Jul 27, 2007 5:53 am

    litleboy has it about right. when you land on the rear tire it acts like a pivot causing the front tire to rotating around that axis...the end result is the front accelerates creating a greater downward force. you can lessen this effect by accelerating the rear wheel on contact. timing, throttle control, and body position are key to pulling this off successfully (read: without injury).

    ken
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    zak13
    Posts:955
    Joined:Tue Apr 03, 2007 4:58 pm

    by zak13 » Fri Jul 27, 2007 9:48 am

    think about pulling a catwalk in 1st gear then pull the clutch in fast your front will slam down or slamming on the brakes
    sellin my xr100
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