juddering under heavy breaking

just wondering if anyone could shed some light on this, b4 i investigate, im thinking its either front pads/discs or head bearings.

thanx


H

If its head bearings, then it should be notchy when turning side to side (i.e. handlebars pivoting on the headstock)

Is it notchy when turning?

Matt

Originally Posted by alpinestarhero

If its head bearings, then it should be notchy when turning side to side (i.e. handlebars pivoting on the headstock)

Is it notchy when turning?

Matt

NO.......... i dont think so, i will go and check in a mo

Go and have a ride round some mini roundabouts and junctions - if its the head bearings, it'll feel horrible when riding slowly. My freind had knakcerd bearings on his kwak zx6r, you could see how hard it was for him in slower turns.

I think if you havnt noticed it, it might be the discs as they are "floating" type?

Matt

Originally Posted by hovis

NO.......... i dont think so, i will go and check in a mo

steering seems fine in the garage, as do the discs?

One off or regular occurance?

Originally Posted by hovis

steering seems fine in the garage, as do the discs?

You need tog et the front end off the fllor I think, and pull the forks front and back, if thre is movement that would indicate head bearings.

Might be hard to detect discs if you are just tapping - when you brake you put alot more force through, possibly enough to cause the knocking movement.

Anyway hovis, I'm no expert so maybe someone else can help you better

Matt

Based on personal experience with the 749, I suggest going for the simple answers first. I suffered an intermitant brake judder problem and did the following to eliminate it:

Check condition and pressure of front tyre.


Remove brake pads and clean surfaces with brake cleaner.(My theory was that spent brake material had "fused" to the surface of the pads and was giving a false bite when first applying the brakes. The problem was fully sorted after doing this.

If the problem does persist then previous folks have given a guide to what to be checking next.HTH.

Had the exact same on the Monster when the wrong pads were fitted. Normal speed breaking was fine, but any high-speed stuff caused the front to vibrate like hell. Changed pads from EBC HH to a set of Ferodo ones, job done.

[jambo]

Get the front end off the deck and check for play in ther head races rather than just whether they're worn and notched. If they seem fine, and the brakes are in good condition, when was the fork oil changed? These are the three things I adjusted / checked when I had the same problem, and one of them got it.