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Old 27-07-09, 01:10 PM   #21
drag
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Default Re: Front end chatter

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Originally Posted by custard View Post
oddly - you may find you have too much rebound on the front and the forks cant extend quick enough so they pump down and then bottom out which causes the chatter. conversely this may be not enough compression...

but hey if its fine going in, just get the front wheel off the ground on the way out - hey presto no more chatter

Fully you should mention this, i'm prob 14 + stone @ the mo and i've never come close to getting the front to lift on her, even now with the 160/162.5 jets.

Must not be dumping the clutch enough at high rpm
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Old 27-07-09, 04:47 PM   #22
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Default Re: Front end chatter

keep trying

have you set the sag for your weight?
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Old 27-07-09, 05:12 PM   #23
drag
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Default Re: Front end chatter

The back sag was set yup, and the front end is a bit more then 10mm left of travel, i'll sort that soon enough
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Old 27-07-09, 05:37 PM   #24
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Default Re: Front end chatter

hmmmm... have just been trying to sort mine out so here are the could be's as i see it

could be the mis matched tyres.
could be too much front rebound so forks arent extending quick enough (bounce the front end and see how quick they come up, more than a second is too much i think)
too little rear compression so rear squats and front comes up (may exacerbate too much front rebound)
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Old 27-07-09, 05:59 PM   #25
drag
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Default Re: Front end chatter

What if i cant bounce the front, i.e it's really stiff, and only moves a mm or three :S
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Old 27-07-09, 06:58 PM   #26
Bibio
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Default Re: Front end chatter

are you sitting on the bike with the front brake on while you are trying to bounce it?

put a cable tie on the stanchions and take the bike for a blast, then come tell us how much it is travelling down the stanchions.
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Old 27-07-09, 08:14 PM   #27
drag
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Default Re: Front end chatter

Post sat evening spin, about 80 + miles



sorry about the glare ..
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Old 27-07-09, 09:17 PM   #28
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Default Re: Front end chatter

no idea. im out. other than stronger springs

oh and the reboud compression and tyres.


buy an r1, i have no idea
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Old 27-07-09, 09:41 PM   #29
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Default Re: Front end chatter

ok, the travel on the forks looks good so the spring is about the right setting. so if you are sitting on the bike and you cant move the front end by bouncing it then your compression setting has to much 'H' (not reactive enough) turn the compression 2-4 clicks to the 'S' (more reactive) then take it for another spin. if you feel that the front is to 'plush/wollowy' turn the compression to the 'H' 1 click at a time if it still feels to 'hard' then dont be scared to turn it further to the 'S'.

once you have your compression set then you can set your rebound.
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Old 27-07-09, 09:54 PM   #30
drag
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Default Re: Front end chatter

Compression is on top right ? when i sit on the bike witht he brakes pulled, i can push the forks down, but it's not really much @ at all, i'll see if i can get a video of it 2 morrow maybe .
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