Bike Chatter?

shammon · World Chat Champion Joined: 24 Jun 2005 Karma :

What the hell is bike chatter do you know, caught the end of a conversation on the tv about it? it is wobble? apparently bikes dont "chatter" in the wet... Confused

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YAMAHA YZF 1000cc THUNDERACE- 'ƃuıןןǝds ʇnoqɐ ʇıɥs ɐ ǝʌıƃ ʇuop ı

White Noise · Mr Dudwee Joined: 17 Dec 2004 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Only thing I've heard it in relation to is braking. Brakes can 'chatter' if there is a warped disc or when ABS kicks in.

I suppose you could call what happens with a big, single cylinder bike under hard braking 'chatter' too. When the rear tyre is barely touching the ground and skips up and down rapidly as it loses then gains traction due to engine braking.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
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craigs23 · Mr Muscle Joined: 08 Jun 2005 Karma :

In racing, where I presume it's more apparent, it's high frequency vibrations from the suspension due to minute problems with the setup or chassis.

WavyGravy · Scooby Slapper Joined: 10 Mar 2006 Karma :

I've understood it to be when the rear wheel goes over a series of small - close - bumps , a bit like when clarkson got his lap soaked driving over that corrugated surface, something definitely chattered then lol, or was that the cold water hehe
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1975 CB125s, 1991 GN250, 1990 Ducati Paso 906
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Fastgut · Trackday Trickster Joined: 07 Sep 2005 Karma :

Its not to do with bumps or in the case of yamaha gp team brakes. It is essentially caused by the chassis and tyres actually having too much grip(hence it doesnt happen in the wet) This then causes a series of sympathetic vibrations(due to natural resonance points being reached) throughout the bike which destroys corner speed(the point at which grip etc is most relevant) As it is generally down to an inbuilt issue with the chasis it is very difficlt to dial it out of a bike by just changing the setup. Hope that helps a bit Cool

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Was a driving instructor now working in Insurance
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