How much butt smacking is to much

10 replies to this topic
  • Kalar01

Posted April 13, 2009 - 06:56 AM


So I have been ridding a little more aggressive and a few of the round rocks and U & J shaped ruts I cross have been making my rear tire hop up and the seat will give me a wack. My question is how much is too much butt smacking? I am riding a 08 450 and want to keep a good fast rebound….

  • grayracer513

Posted April 13, 2009 - 07:09 AM


The rebound on the YZF is too loose, as a matter of fact. I had not thought this until Dave Johnson at Smart Performance set me up with a new rebound stack for the shock that revises the rebound response. Now, the shock kicks less, and the back wheel stays nicely centered through the whoops.

  • feirmeoir

Posted April 13, 2009 - 07:48 AM


:p Decrease the high compression damping force.

  • yz480doinwork

Posted April 13, 2009 - 09:31 AM


:p butt smacking usually ends out in tank slapping!!! it usually turns out bad for me. expecually in the sand:naughty:

  • Kalar01

Posted April 13, 2009 - 06:51 PM


I will try decrease the high speed compression. I don't want to get the rebound to slow and cause packing problems.....


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  • grayracer513

Posted April 13, 2009 - 07:42 PM


You should try bumping the rebound up before you decide that it will pack to an excessive degree. The biggest improvement I noticed from the beefed up rebound stack in mine was in the whoops. If it was going to pack, it would do it there, and it doesn't.

It is probably true that the exact same result can't be had by a simple adjustment as with a revalve, but that's what worked for me. The worst that could happen is that you'd have to undo the adjustment.

  • TeamTech

Posted April 14, 2009 - 06:01 AM


The worst is when that ****er comes up and squishes your nuts against your ass....

  • spark250

Posted April 14, 2009 - 07:21 AM


depending on the situation dragging the rear brake a little will help keep the rear tire down.

  • grayracer513

Posted April 14, 2009 - 07:25 AM


Trailing the throttle or braking over an obstacle usually makes it kick worse, IME.

  • TeamTech

Posted April 14, 2009 - 07:29 AM


I disagree, I have found dragging the brake keeps the rear end down.

  • ace402

Posted April 14, 2009 - 03:20 PM


I disagree, I have found dragging the brake keeps the rear end down.

+1, I even believe Gary Semics says that in his techniques book

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