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post #1 of 18 (permalink) Old 02-29-2012, 08:30 PM Thread Starter
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Front brake squeek

Lately I have been noticing a squeeking when I apply my front brakes. It seems to have been getting worse. I think they are the original pads (copper sintered?) with 12,800miles on them. My rotors dont show any signs of scoreing, or grooves. Im thinking about pulling my front wheel, giving the pads a good sanding (they still have about 40% left) and sanding the rotors also. What causes the squeek? I might just replace the pads. I think I want the EBC Organic pads because they are soft, and wont wear my rotors. Does anyone else use those pads, if so how are they? thanks.

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post #2 of 18 (permalink) Old 02-29-2012, 11:54 PM
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Disc brakes have always had a problem with squealing. It is caused by a harmonic vibration between the pad and the rotor. It is good that your rotors are good, they are NOT cheap. If you are unsure what the pads are, I'd probably replace them with EBC ORGANIC pads. "Sintered" or metallic pads are a lot more likely to make noise, and will definitely wear the rotors down a lot faster. Two other possibilities are contaminated pads, or glazed pads. Use spray brake parts cleaner to clean them, and sandpaper to remove glazing.

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post #3 of 18 (permalink) Old 03-01-2012, 12:38 AM Thread Starter
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I know these brakes will make a noise simply because they are drilled, but it is a high pitched squeek that is annoying. My dad's 86 has the EBC organics, and his are almost silent and his rotors polished like mirrors!

1986 Vn750
18,800 miles, and counting
Bone Stock
New cam chain tentioners
all fluids changed
Spline Lube
windshield
Engine Guard
B-stone S11 RWL-stock sizes
*wanted*
New grips

2001 Vn750
13,100 miles, and counting
spline lube
Bridgestone S11 100/90
Shinko 170/80
rear end oil change
aftermarket mirrors
windshield
otherwise all stock
*anticipated mods*
Engine Guard
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post #4 of 18 (permalink) Old 03-01-2012, 02:11 PM
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Try putting a smear of copper grease on the backs of the pads so the pistons push on it may take the squeal away

Last edited by Swagman; 03-01-2012 at 03:08 PM.
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post #5 of 18 (permalink) Old 03-01-2012, 02:22 PM Thread Starter
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Yeah, when I get around to taking the wheel off I will put it back on with grease on the backs.

1986 Vn750
18,800 miles, and counting
Bone Stock
New cam chain tentioners
all fluids changed
Spline Lube
windshield
Engine Guard
B-stone S11 RWL-stock sizes
*wanted*
New grips

2001 Vn750
13,100 miles, and counting
spline lube
Bridgestone S11 100/90
Shinko 170/80
rear end oil change
aftermarket mirrors
windshield
otherwise all stock
*anticipated mods*
Engine Guard
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post #6 of 18 (permalink) Old 03-01-2012, 05:38 PM
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I know these brakes will make a noise simply because they are drilled, but it is a high pitched squeek that is annoying. My dad's 86 has the EBC organics, and his are almost silent and his rotors polished like mirrors!
Holes don't make any noise, unless you have superhuman hearing. Brakes are drlilled to let the rotor cool faster and heat evenly. Your actually more likely to get a squeaky brake with an undrilled disc over a drilled one.

(and I'll add before someone else does that the holes also dispel water faster and save some weight. Older pads used to actually "smoke" under hard braking and those fumes , a gas, would get trapped between the pad and rotor hampering braking. The holes helped vent this. Newer pads don't have this issue any more)

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Last edited by Knifemaker; 03-01-2012 at 05:49 PM.
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post #7 of 18 (permalink) Old 03-01-2012, 08:05 PM Thread Starter
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Yes drilled rotors cool faster, but it is proven that drilled/slotted rotors make noise under braking. My Camaro used to have drilled and slotted rotors all around, and it made the same noise this bike does, not a squeek, but like a vibration.

1986 Vn750
18,800 miles, and counting
Bone Stock
New cam chain tentioners
all fluids changed
Spline Lube
windshield
Engine Guard
B-stone S11 RWL-stock sizes
*wanted*
New grips

2001 Vn750
13,100 miles, and counting
spline lube
Bridgestone S11 100/90
Shinko 170/80
rear end oil change
aftermarket mirrors
windshield
otherwise all stock
*anticipated mods*
Engine Guard
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post #8 of 18 (permalink) Old 03-01-2012, 08:56 PM
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Yes drilled rotors cool faster, but it is proven that drilled/slotted rotors make noise under braking. My Camaro used to have drilled and slotted rotors all around, and it made the same noise this bike does, not a squeek, but like a vibration.
Well, I'll believe you if you can provide a link to some test, some expert, or some brake company that says this.

I had a RD 400 that came with un drilled discs. I paid to have them drilled at a machine shop. I never heard any difference.

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post #9 of 18 (permalink) Old 03-01-2012, 11:23 PM Thread Starter
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Ive had a bike with a solid rotor, and this one and i can hear a huge difference. When my car was switched back to standard rotors it was much smoother/quieter. It really doesnt matter haha, I just need to get my squeek fixed

1986 Vn750
18,800 miles, and counting
Bone Stock
New cam chain tentioners
all fluids changed
Spline Lube
windshield
Engine Guard
B-stone S11 RWL-stock sizes
*wanted*
New grips

2001 Vn750
13,100 miles, and counting
spline lube
Bridgestone S11 100/90
Shinko 170/80
rear end oil change
aftermarket mirrors
windshield
otherwise all stock
*anticipated mods*
Engine Guard
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post #10 of 18 (permalink) Old 03-01-2012, 11:55 PM
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Quote:
Originally Posted by Knifemaker View Post
Well, I'll believe you if you can provide a link to some test, some expert, or some brake company that says this.

I had a RD 400 that came with un drilled discs. I paid to have them drilled at a machine shop. I never heard any difference.
Sorry KM, drilled/slotted rotors do make a noise, usually a clicking sound which does fade after rotor is worn in. If you google " drilled rotor noise " you will find many concerns about the noise. The reason your rotors that you had drilled didn't make noise is because they do not have dimples. Manufactured slotted or drilled rotors have dimples which create the noise.

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Last edited by JM2001; 03-02-2012 at 12:07 AM.
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