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Old 08-26-2008, 12:05 PM   #1 (permalink)
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Default Mine's got a nasty headshake

03 R6.
Every time I cut the throttle at about 55 I get a nasty headshake.

History:
I just bought the bike. The PO says it has never been dropped, wrecked, anything. There is no evidence to suggest otherwise.

When riding, there's a slight constant wobble in the bars, like the front tire is out of balance. At 55, chop the throttle and the headshake comes.
If I take my hands off, they get a nice 3 to 4" shake.

Tires are Conti Road Attacks.
The front tire is pretty much shot, so that's my first suspect as the cause of the headshake.
Anything else I should check? Are R6s prone to headshake?
I do a lot of trackdays. Should I go ahead and get a damper?
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Old 08-26-2008, 11:29 PM   #2 (permalink)
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tighten the head bearings, there is a how to on it.
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Old 08-27-2008, 12:04 AM   #3 (permalink)
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if it is happening when you chop the throttle either the steering head is loose OR the front tire is bad, or a combo of both. A true head shake comes from the frt being light not loaded
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Old 08-28-2008, 02:11 PM   #4 (permalink)
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I'll replace the tire and tighten those bearings.
Thx
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Old 09-03-2008, 09:22 PM   #5 (permalink)
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Quote:
Originally Posted by DrummerDave View Post
I'll replace the tire and tighten those bearings.
Thx
Just tighten the head bearings and see how it is before spending money on a tire you most likely don not need. I had a similar issue some time ago that was cured after tightening.
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Old 09-10-2008, 07:17 PM   #6 (permalink)
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Quote:
Originally Posted by HardmanGT View Post
Just tighten the head bearings and see how it is before spending money on a tire you most likely don not need. I had a similar issue some time ago that was cured after tightening.
After you park you bike, if your steering drops in to the left (lock position) by itself, tighten the steering head (not the just top nut, but the double locking ringnuts under the triple). - Cost you nothing is you can do it yourself

Check your fork setup to see if both sides are in balance, preload, rebound, compression. - Cost you nothing yet

Check you rear wheel alignment. - Still costs nothing

Check tire balance - $10 at local shops

Remove your fork and rotate them on a vise, check if they bent. - might cost half an arm if you got bend forks.

Good luck
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Old 09-10-2008, 07:19 PM   #7 (permalink)
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oh yeah, definitely get the damper if you extra $$. since I put on the Ohlins, haven't seen a headshake yet
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Old 09-18-2008, 01:36 PM   #8 (permalink)
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yup tighten head berrings and make sure your front tire is in good condition and air pressure is correct.

Damper: ehh dont usually need a damper unless you are wheeling or track riding a lot on a 6.. but thats a whole diff issue... Its NOT needed to fix THIS prob for sure
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