High speed wobble.

you might check the swing arm bearings. even when my axle lines up on the notches it still doesn't seem straight. and I have a wobble also.

donthaveakawman wrote: a steering damper wouldn't hurt but it is still an issue nonetheless.

This can help a little, but it doesn't solve the underlying problem - worse it can move the problem to a higher speed where it's even more of a risk.

Most times carefully checking everything on the bike eliminates the issue. The stock rear shocks are often the culprit - esp. if you can see evidence of oil on the damper rod.

The one most people overlook is wheel alignment. I NEVER rely on the factory marks. I ALWAYS set my bike vertical, and visually align the rear to the front by looking down both sides of the rear tire. You can use a long straight edge to help the center stand is out of the way - you just need someone to help hold the front wheel straight and the bike upright.

My turbo bike was a handful over 120mph - after rebuilding the front forks and making sure the oil in each leg was equal, much of that problem went away. It still becomes unstable under serious load - but that's frame flex and I really need to add even more bracing to the frame to solve that.

Jeff.Saunders wrote:

donthaveakawman wrote: a steering damper wouldn't hurt but it is still an issue nonetheless.

This can help a little, but it doesn't solve the underlying problem - worse it can move the problem to a higher speed where it's even more of a risk.

Most times carefully checking everything on the bike eliminates the issue....

+1 !

apologize for interupting here but use two perfectly straight 2x4's have a buddy set on the bike and place the wood on either side of the tires. rear tire being wider you will have about 1/2 inch clearance from wood to sidewalls of front tire. each side must measure exactly the same. with this being set, tighten your axle nut. then mark each side of swing-arm axle centerline with a spot of white paint. use 1/8 increments and mark about 1 in. back on each side. will never have to true it up again as your marks will be accessable.happy scootering.

Here's a video that shows the "string" method of aligning wheels. Ed

I wonder if persay one side wheelbearing were bad, would that mess up the forks on that side?

Great video. Probably needs translation for you americans

Both my GPz1100 and my brothers 750Turbo are rock solid to 150mph, except anything over 120mph sweepers induce a gentle weave on both bikes. We just ride through it, but scares the bejesus out of anyone following.

fluorescent light tubes are useful as straightedges for wheel alignment.

i mean,
before you do the darth vader dealio :laugh: !

i wonder how many of these bikes have the neck un square from the factory?

didn't pops yosh used to cut them off and square them up and weld them back?

leon

I've used the string method before on cars with great success.

the grease gun worked wonders on Ilene
<I keep thinking of stuff, check the chain for stuck links, I have used pb blaster and have noticed no wear on the o-rings>edit