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Wobbly Ride. NEED SOME ADVICE FOR SURE!
- KZ7hundy
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- 1984 KZ700
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- MFolks
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Motorcycle Wobble Causes
There's a LONG list of potential area that can cause this.
These are not in any particular order
Wheel bearings
Steering bearings - repack grease, check tightness
Swing arm bushings/sleeves/bearings - replace if worn, repack grease
Fork springs aging - check spring length
Loose hardware(bolts,nuts)of suspension system.
Unequal fork oil - if seals leak, then your damping can be ineffective
Rear shocks aging, damper leaks - if you have oil leaking from the seals, the damping is toast.
Worn Tires/Mismatched tires/tire pressures/wrong size tires
Wheel alignment - don't trust the chain adjusters - I visually align the wheels.
Bent rims/broken spokes - get the wheels off the ground and spin them - check for runout / damage
Front disc warped - check for runout
Steering & swing arm bearings are very common problems, but so are tire issues (pressure/mismatch) and wheel alignment.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- KZ7hundy
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- 650ed
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2. Steering stem bearings - the old ball bearing races on mine were shot and caused a low speed (< 30 mph) wobble when I let go of the handlebars. Tapered roller bearings totally fixed that.
3. Swingarm pivot bushings/bearings - my '77 had bushings that allowed a little play when tested. New bushings eliminated the play and somewhat reduced the speed wobble mentioned above (prior to replacing the tires). If you haven't done so, you may want to test the amount of play in your swingarm pivot because a little play there can create weird handling issues. Unhook the rear shock and see if you can feel any play as you try to twist the swingarm; when things are right there should be zero play.
4. Shocks - the stock rear shocks wore out quickly (about 12,000 mile in the case of my bike) and caused a slight wobble when going through turns fast. If yours are originals replace them with high quality shocks.
Having done the above things my bike is now rock steady at all speeds.
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- KZ7hundy
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- camaroguy
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- 650ed
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KZ7hundy wrote: Man alive Ed. I wish I had the experience you did. So you don't think my wobble could be coming from the offset forks and handlebars?
If your forks are bent or twisted a bit I suspect they could cause the wobble. I understood (perhaps misunderstood) from your 1st posting that it was only the handlebars that are tweaked. Can you tell by sighting down the front of the forks if they are mis-aligned? If you can, they may be off by quite a bit. You may need to disassemble the front end and check the fork tubes and triple clamps to see if anything is bent. If it is, you will need to replace. If not, disassembling and reassembling may help realign things properly. If it's only the handlebars that have a bit of a bend I wouldn't think that would cause a wobble. Also, are you sure the wheel wasn't damaged in the mishap? Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- KZ7hundy
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- KZ7hundy
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- KZ7hundy
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