zx6r F3 Brake Judder

Wahlberg · Two Stroke Sniffer Joined: 01 Apr 2010 Karma :

My zx6r has developed a bit of judder on the front brake, I cleaned the discs and the juddering stopped for about 25 miles or so but then came back.

I've been riding it still because it's not that bad but don't want to carry on if it's going to break it.

I'm pretty sure I've got a warped disc, but it did stop for a while when it was cleaned so does anyone know what else could it be?
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If you can't fix it with Gaffa tape, you havn't used enough Gaffa tape! Smile

Phoenix · Twisted Firestarter Joined: 01 Aug 2002 Karma :

Warped disc, not sure what else would cause a noticable wobble, maybe a really really lose couple of rivets. Get it on a front paddock stand and spin the wheel and you'll be able to see the warp either as it runs aroudn or by watching the gap between pads and disc.

AJ · Nitrous Nuisance Joined: 12 Aug 2006 Karma :

check your head stock bearings as well see if their is any play in them as this will give a judder when breaking. If there is tighten them a little if that dont work then you will have to replace them.

Not been wheeling av you Wink

Wahlberg · Two Stroke Sniffer Joined: 01 Apr 2010 Karma :

Not intentionally! I'll whack it in a stand later and have a look. I only seemed to get it at about 25-40mph
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If you can't fix it with Gaffa tape, you havn't used enough Gaffa tape! Smile

Maruchino · Spanner Monkey Joined: 02 Jul 2009 Karma :

Check that the bobbins are free by using a nut+bolt clamped either side with a helping of penetrating fluid.

Don't forget to clean the disc after in case lubricant gets on the disc.

Phoenix · Twisted Firestarter Joined: 01 Aug 2002 Karma :

Disc warpage often only occurs at a certain speed range, logical really as the faster the disc is moving through the caliper the less time the pads have to move into the dips and rises so the wobble on the lever disappears or changes to a sort of vibration rather than a pulsing.

Wahlberg · Two Stroke Sniffer Joined: 01 Apr 2010 Karma :

I've only just got around to posting back on here again! Cheers for the words of wisdom Smile

I put it on the paddock stand and it's the offside disc thats wobbling, I think it's from where I tried to ride off with the disc lock on - DOH! Didn't drop it though luckily

Anyway I think it needs replacing, does anyone know if I need to get both sides replaced or if I could just change the one? The one I want to keep has done 14k. I only ask because they're bloody expensive!
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If you can't fix it with Gaffa tape, you havn't used enough Gaffa tape! Smile

jam125 · Borekit Bruiser Joined: 14 Jan 2006 Karma :

hi ive got a wavey disk off a zx6r f3 if its any good to ya its a galfer copy

Wahlberg · Two Stroke Sniffer Joined: 01 Apr 2010 Karma :

Nice one dude, is it 2 wavey discs or one? If it is 2 I definately be interested! I've got the standard ones on there atm. It'd be a bad idea to mix them I think
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If you can't fix it with Gaffa tape, you havn't used enough Gaffa tape! Smile

Vincent · Banned Joined: 16 Oct 2006 Karma :

jam125 · Borekit Bruiser Joined: 14 Jan 2006 Karma :

its just the one the other is shaped like a pringle lol if you can find another you can have them for postage money

Noxious89123 · World Chat Champion Joined: 10 Jun 2007 Karma :

Vincent · Banned Joined: 16 Oct 2006 Karma :

Wahlberg · Two Stroke Sniffer Joined: 01 Apr 2010 Karma :

It's going to be either a new original or 2 new wavey ones then, cheers guys, do you know a good place to get hold of them that doesn't charge the earth?
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If you can't fix it with Gaffa tape, you havn't used enough Gaffa tape! Smile