Rear brake spongy / adjustment? - ZX6R Forum
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post #1 of 12 Old 04-05-2012, 01:36 PM Thread Starter
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Rear brake spongy / adjustment?

Hey guys,

Since you all know I've crashed my bike twice, coz i'm pro like that

anyways ever since the first down i've had suspicions about the rear brake.

I know it doesn't brake as well as the front but it doesnt do much braking in my opinion.

I dont know if it has been effected by the oil that was over the rear of my bike after the first crash or I have cooked the brakes or what.

They seem very spongy and hold the bike on a hill but with a little pressure, as soon as you start to ease off the brake starts making a creaking noise as the disk slips through the pads.

Now just as a tester today, I tried to see if I could lock up my rear wheel.
It was raining and its about 4 degrees celsius.
So any hard force on the rear brake should guarantee at least a little lock up, but nothing... no matter hold sharply and hard I presse don the brake it wont lock up.

So do you think I need to replace pads or is there an adjustment I can do to see if that helps?

Steve
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post #2 of 12 Old 04-05-2012, 01:37 PM
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Have you bled the brakes?

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lol I am picturing nasty coming rolling off the bike and then just jumping up out of it and goin into a gas station buy a monster and start drinking it like nothing just happened
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post #3 of 12 Old 04-05-2012, 01:38 PM Thread Starter
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dont think its air in the lines but yeah I could give it a crack over the weekend.
you think it might be air?

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post #4 of 12 Old 04-05-2012, 01:39 PM
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Hey buddy, replace they pads, think you have saturated them with the oil the pads will suck in the oil. change them and clean up the disc with brake cleaner, that should sort it.
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post #5 of 12 Old 04-05-2012, 01:41 PM
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I would start with bleeding the brakes and if that doesnt do it then move onto replacing pads. Best to do the easiest/cheapest first

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lol I am picturing nasty coming rolling off the bike and then just jumping up out of it and goin into a gas station buy a monster and start drinking it like nothing just happened
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post #6 of 12 Old 04-05-2012, 01:43 PM Thread Starter
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Yeah I was thinking that.

I'll need to take a picture of my disk as there is an unusual mark appearing on them which I think it is from the pads.

If my rear tyre was covered in oil i can only asume my disk was too and the pads would have scooped it all up.

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post #7 of 12 Old 04-05-2012, 01:44 PM Thread Starter
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I would start with bleeding the brakes and if that doesnt do it then move onto replacing pads. Best to do the easiest/cheapest first
rodger that. I'll see what i'm doing this weekend and have a crack at it.

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post #8 of 12 Old 04-05-2012, 01:45 PM
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Pads buddy, not air, get em changed.
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post #9 of 12 Old 04-05-2012, 01:55 PM
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I would go with giving them a quick bleed first, if the bikes been on it's side there is a good chance you have induced air into the system. If there was oil on the pads continued use would burn it off and it should be ok.


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post #10 of 12 Old 04-05-2012, 01:57 PM
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I have the same exact problem i can hold on my rear brake and still move my bike a little bit when im in neutral and on hills its almost utterly useless gonna try this also lol.
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post #11 of 12 Old 04-05-2012, 04:22 PM
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it's not oil on the pads. When I got hit, my rear brakes were locked all the way until I got home, anyways took it to the dealer they replaced the brake bracket, bled the brakes and replaced the pads. And it's not the same as it was stock, I can make the rear lock but the brakes are spongy and it takes lot's of pushing to get it to engage.
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post #12 of 12 Old 04-10-2012, 03:25 AM
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Not quite on topic, as its front brakes but, I've a 05 636, had already tried improving my front brakes by ss lines and using 5.1 DOT brake fluid, no love. Just installed Nissin calipers and used Vesrah pads. The difference is night and day. First of all I have only maybe three quarters of an inch of full travel from total off braking, to full on braking, with amazing progressive bite from almost the moment I touch the brake lever. (when I first put them on I thought I had not put them on right and they were permanently locked on, as there was hardly any travel in the levers) I feel I could flip the bike by using 1 finger. I always had a feeling with the original set up that, especially when braking from high speed, that I wasn't sure how much brake I had left to expect, as there was just so much spongy travel. As a mod, in the top 3 for me.
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