shimmy when brakes applied over 90mph - Kawasaki ZX-10R.net
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post #1 of 53 Old 07-25-2007, 10:12 AM Thread Starter
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shimmy when brakes applied over 90mph

ok yesterday I installed a new set of ebc HH brake pads and kevlar brake lines every thing seemed to be fine. today on my daily ride into work i noticed a slight shimmy at speeds over 90mph when I lightly touch the brake but not when I put down full pressure. My first though was warped brake rotors but they dont shimmy at slower speeds or full brake pressure..... ANY IDEAS???
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post #2 of 53 Old 07-25-2007, 10:24 AM
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I have a similar problem as do several other members, some have had it with stock brakes, I only had it when I changed to EBC HH's , it appears to be fork flex , like you I dont get it when applying more brake pressure.

You can dial some of it out by using less preload on the front springs but it compromises the handling by having more dive.
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post #3 of 53 Old 07-25-2007, 10:30 AM
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whne you put the new pads on did you sand down your rotors at all?

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post #4 of 53 Old 07-25-2007, 10:45 AM
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It would shimmy at all speeds if the rotors were contaminated, you can make the shimmy go away for a while by hard bedding the pads, but it always returns.
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post #5 of 53 Old 07-25-2007, 10:51 AM
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Its certainly a bummer when owners believe they are improving their brakes with, pads, ss-lines etc only to encounter this issue as described and as FAF mentions not all do but when it rears its ugly head the description is always the same.

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post #6 of 53 Old 07-25-2007, 11:01 AM
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Pulled my bike for a while until my Ohlins get here , I started to get it back really bad on my last outing, all I could do was to cook the front pads to stop the initial bite from making the forks do their dance and then it was fine for about an hour , but after some moderate breaking the pads came back and the forks did their thing again.

I completely ruined a front tire from this anomoly , I didnt notice how bad it was until I washed the bike and then you could see all the lateral ridges in the rubber , the shimmy makes the tire hop and causes uneven wear then the uneven wear makes the shimmy worse, and so on.
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post #7 of 53 Old 07-25-2007, 11:30 AM Thread Starter
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ok

No I did not sand the rotors at all. is there a fix for it? I will go back and buy stock pads if I need to...

Fork Flex??? Not sure what to do>?

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post #8 of 53 Old 07-25-2007, 11:55 AM
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You can try sanding the rotors and sanding the new pads again and see if it helps , but I have a feeling it will come back.

FWIW , I dont get the shimmy when I go back to stock pads , but I dont get as good bite from them.

The stock pads work better as they bite more gradually allowing the front end to take a better ,steady set.
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post #9 of 53 Old 07-25-2007, 01:12 PM Thread Starter
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???

Ok well I emailed ebc and told them that many people have had the same problems and I would like a full refund well see what happends maby they will give me a fix
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post #10 of 53 Old 07-25-2007, 01:26 PM
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Unfortunately its not EBC's fault, so I wouldnt expect too much, the fault lies with the bike and its abilities to take more instant loads on the front forks, not al ZX's are doing this either and so it hasnt become a major complaint for Kawasaki to deal with.

My neighbours zx14 has the same issues.
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