No doubt someone here has been through this. Beginning at about 30 MPH the bars begin a slight wobble. If I take my hands off the bars the wobble becomes increasingly violent. As long as I keep a hand on the bar I can run at high speeds without difficulty. Just had the front wheel balanced...still have the wobble. A bent fork tube perhaps?
Low speed wobble blues...
- Thread starter Coop
- Start date
- Status
batrider
VIP MEMBER
- Joined
- Aug 9, 2008
- Messages
- 2,380
Check your head steady if you are running the stock one also if all else is well. Bolts tight, rubbers not separated, if pre-73 check that the the steady itself has not cracked.
Another thing to look at is whether the bead is seated on your tires. There is a molded in rib near the beads that should be equidistant from the rim all the way around after mounting. Most of the time you need to overinflate the tire to get the bead to pop into place. (Then let the air out 'til you are at the correct pressure.) Sorry if you already know this but sometimes the obvious gets overlooked.
What year is your bike? Some years have a little wiggle tendency more than others but if yours is violent then there is something wrong.
Russ
Another thing to look at is whether the bead is seated on your tires. There is a molded in rib near the beads that should be equidistant from the rim all the way around after mounting. Most of the time you need to overinflate the tire to get the bead to pop into place. (Then let the air out 'til you are at the correct pressure.) Sorry if you already know this but sometimes the obvious gets overlooked.
What year is your bike? Some years have a little wiggle tendency more than others but if yours is violent then there is something wrong.
Russ
- Joined
- Jan 27, 2008
- Messages
- 1,607
Coop said:
One good thing to do is to check the wheel for trueness. Put the bike on its centerstand and jack up the front so the wheel is just off the ground. Slowly spin the wheel, and you can see if:
1) the wheel is true - no wobbling side-to-side or up and down
2) the tire is set properly on the rim.
Just because the wheel is balanced doesn't mean its true.
A second thing to do is to check the headstock bearings. Worn bearings or mis-adjusted bearings will result in head shake.
- Joined
- Nov 20, 2004
- Messages
- 20,415
A worn down rear tyre or worn out shocks have been known to cause or contribute to steering wobble, also check for excess play in the Isolastics, and for any play in the swingarm pivot or wheel bearings?
The head bearings of the '72-on models are non-adjustable sealed balls, but they rarely give any trouble, check if the steering turns smoothly.
The head bearings of the '72-on models are non-adjustable sealed balls, but they rarely give any trouble, check if the steering turns smoothly.
http://www.dinamoto.it/DINAMOTO/on-line ... bmode.html
http://vintagenet.us/phantom/wsc.html
These are interesting reading. I'm a little disappointed in Mr. Augustine's treatment of Stevan.
http://vintagenet.us/phantom/wsc.html
These are interesting reading. I'm a little disappointed in Mr. Augustine's treatment of Stevan.
- Status
