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Old 03-05-10, 02:53 PM   #1
Jude
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Screeching Kool Stops

I just got a pair of Kool Stop brake pads for the first time and put them on. The rear pair is screeching like a couple of pigs raping each other every time I brake. Any idea why this could be? It's just the back, not the front, and the pads were all put on at the same time.
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Old 03-05-10, 02:58 PM   #2
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Mine were doing that when it got wet and when it dried up it didnt do it anymore.
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Old 03-05-10, 02:58 PM   #3
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It could be the setup.The leading edge should be a bit closer than the trailing edge,stops `em squealing.
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Old 03-05-10, 03:32 PM   #4
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It could be the setup.The leading edge should be a bit closer than the trailing edge,stops `em squealing.
+1

loosen nuts holding pads very slightly. Insert thin card between pad and rim at rear of pad, then re-tighten. Leading edge of pad will now touch rim first.

Alternatively, log on to Sheldon Brown's website for more details
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Old 03-05-10, 07:24 PM   #5
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Yup...called toe in adjustment. On my Raleighs I actually have to bend the brakes arms a bit to get toe in set. I still get the occasional squeal on steel rims on a long downhill but that is it.

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Old 03-06-10, 12:26 AM   #6
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Originally Posted by Jude View Post
I just got a pair of Kool Stop brake pads for the first time and put them on. The rear pair is screeching like a couple of pigs raping each other every time I brake. Any idea why this could be? It's just the back, not the front, and the pads were all put on at the same time.
I've had Kool-Stop salmon color pads that could not be de-squeaked, no matter what the adjustment. It happened on newer, less-worn rims. The only solution was to replace them with Kool-Stop black pads, run them for a while to bed in the rim, then switch back to salmons.
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Old 03-06-10, 02:47 PM   #7
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It's why people call them Loud Stops. bk
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Old 03-06-10, 03:21 PM   #8
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To quiet squealing brakes my first approach is to dress up the face of the pads with a fingernail emery board. That, by itself, works probably 75% of the time. My second shot is to give the pads a touch of toe in. That brings me up into the high 90's. The last increment requires a variety of tricks and the use of words that only bike mechanics are allowed to say.
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