Brake shudder
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Tourer
Joined: Jun 2007
Posts: 267
Likes: 11
From: Oklahoma City
Update - bike is at the dealer service getting both front rotors replaced. Should I have them replace the pads as well or would the warped rotors not cause any extra wear compared to good rotors?
Road Captain
Joined: Jun 2006
Posts: 723
Likes: 62
From: Cape Cod, Ma.
I have managed to warp the front rotors on all of my work motors, starting with an 08 RK. The beginning of this year I swapped to the Brembo setup on my personal 02 Ultra. Not surprisingly I have already developed the pulse/shudder with these rotors. Never had a problem with the stock 02 rotors and they had 68,000 hard miles. I plan on switching to a full floating rotor in hopes of stopping this issue. I can only suspect that the stock HD/Brembo rotors are more susceptible to warping than the earlier rotors. Still much happier with the stopping ability of the Brembo over the original 02 set up.
Neil
RDMC
Neil
RDMC
Club Member
Joined: Apr 2013
Posts: 7,681
Likes: 8,413
From: Utah
We had a 2012 limited that warped the front rotors changed to floating rotors and never had the problem again.
Road Captain
Joined: Dec 2012
Posts: 577
Likes: 20
From: Reno
I say this and get little attention as it seem either too simple to resolve, check, or maintain and "overlooked."
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
Seasoned HDF Member
Joined: Jun 2012
Posts: 14,438
Likes: 2,421
From: Pittsburgh, Pa
I say this and get little attention as it seem either too simple to resolve, check, or maintain and "overlooked."
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
Road Warrior
Joined: Jun 2014
Posts: 1,745
Likes: 36
From: Lafayette La
I say this and get little attention as it seem either too simple to resolve, check, or maintain and "overlooked."
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
. Iv never had an issue but then iv never heard this ether! The B is for Brakes, right?
Road Captain
Joined: Dec 2012
Posts: 577
Likes: 20
From: Reno
The floats on my HD discs move vertically - that is in towards the center and outwards away from the center. With little effort... The will click when you move them from stop to stop (metal type sound from easy and debri free movement)
The movement can be measured from stop to stop with 3 millimeters (at least on my stick ruler) but I also wasn't wearing my glasses.
I don't have any lateral movement (side to side) But I do know my buddy was complaining about brake pulsating for a while and it's gone now.
They were pretty much locked in position and I brought over my PB blaster and he is a cautious guy and began thinking that maybe they weren't supposed to be free movement. It took a short while... Maybe 15 mins... Before it started to penetrate through and for movement to be felt.
The movement can be measured from stop to stop with 3 millimeters (at least on my stick ruler) but I also wasn't wearing my glasses.
I don't have any lateral movement (side to side) But I do know my buddy was complaining about brake pulsating for a while and it's gone now.
They were pretty much locked in position and I brought over my PB blaster and he is a cautious guy and began thinking that maybe they weren't supposed to be free movement. It took a short while... Maybe 15 mins... Before it started to penetrate through and for movement to be felt.
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Thread Starter
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Tourer
Joined: Jun 2007
Posts: 267
Likes: 11
From: Oklahoma City
I say this and get little attention as it seem either too simple to resolve, check, or maintain and "overlooked."
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
The floats on a floating rotor are supposed to have free movement. Yet so many people ride with them frozen in one position... WARPED.
A buddy of mine and I coasted down a 7 story parking garage and all I could hear from his front end was (w/ engine off) a cyclic shoop, silent, shoop, silent, shoop, silent, shoop... we free'd them up with PB Blaster and gentle articulation of the float with pressure applied with a screw driver as leverage and it began moving vertically (as intended).
I haven't added many things over time to my pre-ride checklist... but this is on thing I do. Simply point finger and thumb... grab the float and see if the B moves.
Thanks for all the answers!
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
I have managed to warp the front rotors on all of my work motors, starting with an 08 RK. The beginning of this year I swapped to the Brembo setup on my personal 02 Ultra. Not surprisingly I have already developed the pulse/shudder with these rotors. Never had a problem with the stock 02 rotors and they had 68,000 hard miles. I plan on switching to a full floating rotor in hopes of stopping this issue. I can only suspect that the stock HD/Brembo rotors are more susceptible to warping than the earlier rotors. Still much happier with the stopping ability of the Brembo over the original 02 set up.
Neil
RDMC
Neil
RDMC
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