Another suspension question...

[MX_563]

I apologize in advance if this has already been covered in previous threads (I'm sure it has)...

What are some of the causes of headshake? The obvious one to me is not enough rebound damping up front. But there are other more subtle causes, right?

I don't have a problem when I'm sitting down acceleration out of a turn. But sometimes when I'm standing up on a rough straight (head over the bars), I'll get headshake.

I've heard that a misadjusted rear-end can contribute. Any thoughts?

[COBRA8]

You can try running the forks farher down the tripleclap.

[kpsuspension]

what's is your sag set at and does your bike go down evenly

[N4TRBL]

What Cobra8 said and also check your sag in the rear,that can contribute to it.
When your going through a choppy straight you should be in attack position but keep more weight from the middle to rear of the bike.

[chapel]

Also, make sure your steering head is tight enough. Your handlebar should have a little resistance. If your suspension is too stiff in back or front it could headshake. If your oil level is too low in front that could cause it. Also if the front forks are binding you can get headshake.
greg

[andymoto]

Front end sag should be 25% of total travel of forks. 12"=3" sag.
Rear end around 4 inches (95-100mm). More sag=less headshake.
Like Kevin says and it's real important that movement of both ends are equal. Bike off stand, and straight, hold bars straight, push down on left peg straight down and see if both are equal in movement.
Also as Jackmans dad says, experiment w/moving fork legs down clamps.
Chapel solution as well. I use to use this on Suzuki's that helped lots.

Any recent crashes? No matter how slow, could twist front outta alignment.
Any recent clicker changes?
How many hours since last fork oil change?

If forks haven't been serviced for quite sometime, do that first before all above/below is tried. Worn oil wears bushings can cause front end to dive faster than normal

Yes, misaligned rear chain adjusters can cause headshake. Use tape measure at hollowed swingarm pivot points and hollowed rear axle. Also tweaked subframes will cause effect due to different pressure points in riding position.
Too much rebound damping
Too much High speed comp and not enough low speed comp

We've traded posts in past and now you have developed problem w/headshake. If forks have been recently serviced, try all the posts, but one by one, starting IMO sag in both ends and making sure rear adjusters aligned.

Good luck.

Drag your rear brake lightly when it starts to happen, but keep on the gas....it's almost like a "torque feeling" on the geometry