What Causes Headshake?
Posted February 15, 2005 - 04:19 PM
on a semi-bumpy trails. The bike does fine in the whoops. I weigh in at 150lbs. fully loaded with gear. I have backed off the compression on the forks 4 clicks and went up and down on the rebound a couple of clicks. My sag is set up at 3.5 inches. Where do I go from here? I am coming off of a YZ250F and maybe my riding style needs to change. (Get over the bars more?) I know the ultimate idea would be a stabilizer, but... I don't want to ask the wife for that kind of cash. And yes, I wear the pants in the family. Just ask me.
Posted February 15, 2005 - 04:32 PM
Posted February 15, 2005 - 05:24 PM
Before tighting the pinch bolts on the forks, hammer a screwdriver in between the slit after you tighten the axel nut.
Posted February 15, 2005 - 05:50 PM
Posted February 16, 2005 - 07:35 AM
Increasing rebound in the front and decreasing compression will make the front ride lower. I would set the fork back to default and make those adjustments on the rear to see the effect. Perhaps backing preload off and letting the rear settle down into the stroke would be good to try too.
My '03 has always been "lively" in the front and I ended up with a WER damper.
Ride fast-take chances.
Posted February 16, 2005 - 09:13 AM
Hope this helps.
Posted February 16, 2005 - 02:09 PM
Posted February 16, 2005 - 09:11 PM
Trial and error
Posted February 17, 2005 - 06:52 AM
Posted February 17, 2005 - 07:10 PM
Assuming everything's properly tightened, headshake usually comes from a steep steering angle. It's either designed that way (the WR and YZ are not), your ride height in the rear is too high (which tips up the fork angle), or ride height in front is too low (similar effect).
Honda CR's have a little steeper fork angle than WR's and YZ's, and they tend to exhibit a little more headshake. But it's not a trait common to Yamahas that are set up properly.
Good luck, and I would take it easy after making adjustments until you are comfortable that it hasn't made things worse.
Posted February 18, 2005 - 03:05 PM
05 wr450 with the A.T.S.package
Posted February 18, 2005 - 04:33 PM
05 wr450 with the A.T.S. package
Posted February 19, 2005 - 07:49 AM
Posted February 19, 2005 - 09:12 AM
05 wr450 with the A.T.S. package!