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Old 07-25-2014, 10:03 AM   #1
silent11
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Handlebar Wobble

Maybe 2 months ago I noticed some wobble in my handlebars. I took my hands off to sit upright, just to stretch my back while slowing down for a red light. I was looking straight ahead and noticed the bike felt a little shaky. When I looked down I saw the handlebars wobbling back and forth, the amplitude increasing with time.

I quickly grabbed the handlebars and regained control of the bike. I'd never noticed it before, I'm sure I'd taken my hands off the bars before, but perhaps not at that speed. I didn't notice how fast I was going but I'd guess between 40 and 20.

Since then I've replaced the front tire, it was pretty worn, however handlebars still want to wobble. I'm too scared to take my hands all the way off after that first experience, but I notice if I loosen my grip and leave just a finger or two on, they want to start wobbling.

I've done a little reading online and folks have suggested the following:
  • Check to make sure your steering head bearing is tight.
  • Check your wheel bearings.
  • Check the fluid level in your forks.

Question 1) have any of you experienced the handlebar wobble? If so what was the root cause, how'd you fix it?

Question 2) Are these things a n00b like myself can tackle with the help of youtube, or should I take it in to a shop?

And yes, I know, I should keep my hands on the handlebars.

Bike is a 2007 Honda CBR 600rr
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Old 07-25-2014, 10:13 AM   #2
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I had that same bike, and found my steering head nut to be loose. It was causing the handlebars and trees to pitch forward ever so slightly when i applied the brakes, making a very slight clicking sound/feeling. Could be causing the wobble if it was really loose, best to check it as it's a known issue.
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Old 07-25-2014, 10:13 AM   #3
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Bad head bearings
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Old 07-25-2014, 10:19 AM   #4
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bar nut is loose
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Old 07-25-2014, 11:12 AM   #5
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Bad tire, tire needs to be ballanced. Or bent rim
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Old 07-25-2014, 11:26 AM   #6
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The front tire is worn. It happens to most bikes as the tire wears.
Do you need a new tire?
Depends on condition and how comfortable you are with the wobble. It it's worn badly then get a new one. If the wear isn't so bad then decide how you feel about the wobble.
Personally I just stay aware that it will happen if I take my hands off the bars and keep riding til I think it's time for a new tire.
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Old 07-25-2014, 11:26 AM   #7
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Old 07-25-2014, 11:30 AM   #8
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Old 07-25-2014, 11:35 AM   #9
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Just reread. If the tire is only 2 months old it's probably not tire wear.
Pressure is good?
Steering head bearings tight? (don't overtighten)
Has the bike ever been wrecked? Even laying it down can tweek the front end a little. May have to loosen the triple clamps, with the front supported, and let everything resettle where it needs to be.
My advice is to call Motorcycles Unlimited on 1960 and talk to Patrick. You won't find a better group of guys to get your bike right.
It wouldn't surprise me if he told you to bring it by and they would check it out for free. Look in the forum sponsor page for the number.
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Old 07-25-2014, 11:36 AM   #10
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Old 07-25-2014, 11:51 AM   #11
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I think bad head bearing.
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Old 07-25-2014, 02:10 PM   #12
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Bent rim
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Old 07-25-2014, 02:40 PM   #13
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Quote:
Originally Posted by Romeo36 View Post
Bad tire, tire needs to be ballanced. Or bent rim
Yeah, the front tire could be old, and worn unevenly on the sides giving it a V shape instead of a U shape.

**just saw that the tire's new, so what they said.
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Old 07-25-2014, 10:10 PM   #14
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did you check the headlight fluid?
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Old 07-28-2014, 08:26 PM   #15
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you're going up to a light.. if the bike is actively slowing down, the tires will catch and cause a wobble if you have anything loose or only have the factory stabilizer. the way to fix this is.. go to the light.. and completely stop. THEN stretch your off. Happened to me before and scared me shitless. Only remedy I can advise is put it at a higher gear to coast to the light. Keep it in gear not neutral because that would be disaster waiting to happen.
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