CBR f-brakes
- Thread starter gjp
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gjp
another post whore
Re: CBR f-brakes
I did about 12 35mph to 0 stops. Brakes started to squeak from 3rd stop to end. When cold they did not squeak. There is no way I glazed the brakes because I was so easy on them before. They got hot. I will let them cool over night and hope. I will pull off the wheels tomorow and see whats up. The kit is so nice. I had to of did something wrong but I cant figure out what. Thanks guys.
I did about 12 35mph to 0 stops. Brakes started to squeak from 3rd stop to end. When cold they did not squeak. There is no way I glazed the brakes because I was so easy on them before. They got hot. I will let them cool over night and hope. I will pull off the wheels tomorow and see whats up. The kit is so nice. I had to of did something wrong but I cant figure out what. Thanks guys.
gjp
another post whore
Re: CBR f-brakes
I ripped apart the brakes and double checked everything. Shimmed ok. Nothing rubbing. I noticed 2 small scratches on the rotors. I cant see what caused it. could had been something stuck in the pads?? I did use red lock tight on everything. Tourqued everything back to specs. I will see tonight as I go for another test drive.
I ripped apart the brakes and double checked everything. Shimmed ok. Nothing rubbing. I noticed 2 small scratches on the rotors. I cant see what caused it. could had been something stuck in the pads?? I did use red lock tight on everything. Tourqued everything back to specs. I will see tonight as I go for another test drive.
George Blake
DONATING MEMBER
Re: CBR f-brakes
What makes my brakes squeak- and how do i fix it?
Ok, here's the answer: http://www.delphi.com/pdf/techpapers/1999-01-0142.PDF
It's 8 pages long- and will tell you exactly what causes brake noise.
Did you read it? No? Ok, We'll summarize it briefly: High-pitched brake squeal is caused by a high-frequency vibration between the pad and the rotor. Brake noise is not caused solely by the brake pad. The brake rotor diameter, and stiffness of the disc are also factors in the offending noise. Metallic-Carbon pads (as opposed to organic (asbestos) pads) typically produce more inherent noise than the older organic pads. Different brake pad manufacturers use different and varying amounts of substances in their pads: Iron, Copper, Zinc, Other Alloys, Lead, Carbon, Ceramic compounds, Kevlar, and numerous other fillers. This variation in pad composition, geometric design of the pad, and the stiffness (density) of the pad material itself can also contribute to the noise. Lastly, all of these factors can be affected by environmental factors such as temperature and humidity.
Now, how do I fix it?
#1: Make sure you have straight and true surfaces on your rotors and pads. Turn, or replace rotors as necessary- do the same with the pads.
#2: Inspect calipers, caliper sliders, and all other mounting sufaces and metal-to-metal contact areas. (This includes the rotor to hub mounting surface which commonly becomes contaminated by rust and other debris!) Lubricate all metal-to-metal contact areas with moly grease or lube. Inspect complete system and make sure that rotors and pads are lining up 'true' when brakes are being applied.
#3: Apply anti-squeal moly lube or similar to backing plate of the pads - or use an anti-squeal shim between the pad and the piston contact areas. This will change (dampen) the frequency of the vibration and will help reduce the noise.
#4: Chamfering of the leading and trailing edge of the pads will also help to reduce noise levels.
#5: Inspect related suspension components to make sure worn components are not placing undue stresses on the braking system, calipers, and pads.
Still not fixed? Ok! - You've got a tough one! We recommend going here to get your Doctorate in Friction Science: http://www.frictioncenter.com
I hope you remember your ThermoDynamics lessons from Physics class!
Hopefully something there helps. It's a lot of info but your answer is here somewhere.
What makes my brakes squeak- and how do i fix it?
Ok, here's the answer: http://www.delphi.com/pdf/techpapers/1999-01-0142.PDF
It's 8 pages long- and will tell you exactly what causes brake noise.
Did you read it? No? Ok, We'll summarize it briefly: High-pitched brake squeal is caused by a high-frequency vibration between the pad and the rotor. Brake noise is not caused solely by the brake pad. The brake rotor diameter, and stiffness of the disc are also factors in the offending noise. Metallic-Carbon pads (as opposed to organic (asbestos) pads) typically produce more inherent noise than the older organic pads. Different brake pad manufacturers use different and varying amounts of substances in their pads: Iron, Copper, Zinc, Other Alloys, Lead, Carbon, Ceramic compounds, Kevlar, and numerous other fillers. This variation in pad composition, geometric design of the pad, and the stiffness (density) of the pad material itself can also contribute to the noise. Lastly, all of these factors can be affected by environmental factors such as temperature and humidity.
Now, how do I fix it?
#1: Make sure you have straight and true surfaces on your rotors and pads. Turn, or replace rotors as necessary- do the same with the pads.
#2: Inspect calipers, caliper sliders, and all other mounting sufaces and metal-to-metal contact areas. (This includes the rotor to hub mounting surface which commonly becomes contaminated by rust and other debris!) Lubricate all metal-to-metal contact areas with moly grease or lube. Inspect complete system and make sure that rotors and pads are lining up 'true' when brakes are being applied.
#3: Apply anti-squeal moly lube or similar to backing plate of the pads - or use an anti-squeal shim between the pad and the piston contact areas. This will change (dampen) the frequency of the vibration and will help reduce the noise.
#4: Chamfering of the leading and trailing edge of the pads will also help to reduce noise levels.
#5: Inspect related suspension components to make sure worn components are not placing undue stresses on the braking system, calipers, and pads.
Still not fixed? Ok! - You've got a tough one! We recommend going here to get your Doctorate in Friction Science: http://www.frictioncenter.com
I hope you remember your ThermoDynamics lessons from Physics class!
Hopefully something there helps. It's a lot of info but your answer is here somewhere.
gjp
another post whore
Re: CBR f-brakes
Thanks. I printed the pages out and yes I will read them...someday. The squeaking I am hearing is not what I have heard from brakes before. I did a 4 wheel conversion on my bel air, 6 piston calipers on my Mustang and a rear conversion on my SGT. Never had a problem. This is a very deep loud squeaking sound. It ony comes on after the brakes warm up. It seems the more I drive the truck the longer it takes each time for the sound to come back. I did the anti- squeak on the rear of the pads. i will try to smooth the edges. Thanks for the reading. BTW being a trany guy, what temps should I be seeing. I have a remote filter and a B&M 20k btu cooler.
Thanks. I printed the pages out and yes I will read them...someday. The squeaking I am hearing is not what I have heard from brakes before. I did a 4 wheel conversion on my bel air, 6 piston calipers on my Mustang and a rear conversion on my SGT. Never had a problem. This is a very deep loud squeaking sound. It ony comes on after the brakes warm up. It seems the more I drive the truck the longer it takes each time for the sound to come back. I did the anti- squeak on the rear of the pads. i will try to smooth the edges. Thanks for the reading. BTW being a trany guy, what temps should I be seeing. I have a remote filter and a B&M 20k btu cooler.