Avid Brake Howling - name that tune!
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Specialized Hardrock Sport Disc 10- CANYON Nerve AM 6 20110
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cyd190468 wrote:A ruler over the edge of a table doesn't resonateCurrently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0
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cyd190468 wrote:A ruler over the edge of a table doesn't resonate
yes it doescyd190468 wrote:it oscillates as the motion doesn't involve constructive interference.
what does constructive interference have to do with the motion?cyd190468 wrote:Where you clamp it, it produces a null
please explain "a null" in this contextcyd190468 wrote:as you have clamped it to a very large heavy object. If it was free standing it couldn't oscillate around that point.
no, but it would oscillate in a different way, clamping simply changes the nature of the whole system.cyd190468 wrote:And yes the solder acting as a damper was exactly what my original post said. My original post concerned advice given based on my experience of a similar problem, and in my experience would have solved his problem quickly and free of cost
this, I agree with
but, genuinely, adjusting the caliper properly so as to not have one pad dragging, is the real solution.0 -
I disagree with the last part, if you have an input to an object at it's resonant frequancy then it will resonate, if it's in the audible frequancy range you'll hear it.
I once worked on a car that had a major issue (pre production) and you could creep the car in D and have the brakes howling like banshees (much louder than any old MTB system!)
My rear disc used to do it, Avid J5, Carrera frame, Allipgator disc, sintered pads, it would howl as soon as the brakes got at all warm, cold it didn't.
Organic pads (having more give) made it better (much better), but the only solution I could find was a different (much stiffer) disc (hayes) which fixed it.
I think Avid with the tri-align system are more prone as it reduces the stiffness of the caliper mounting, also the carrera frame may not have been the stiffest in that area anyway.
I now have a stiffer mounted XTR caliper on the back and will be trying the alligator disc again.Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0 -
It would raise the standards of the physics part of this debate if the main protagonists would let us know the details of their qualifications, relevant experience (forums don't count) and published papers. Followed by another explanation of their point of viewSpecialized Roubaix Elite 2015
XM-057 rigid 29er0 -
The Beginner wrote:I disagree with the last part, if you have an input to an object at it's resonant frequancy then it will resonate, if it's in the audible frequancy range you'll hear it.
last bit of which post?0 -
mrmonkfinger wrote:but, genuinely, adjusting the caliper properly so as to not have one pad dragging, is the real solution.Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0
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Giraffoto wrote:if the main protagonists would let us know the details of their qualifications, relevant experienceCurrently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0
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The Beginner wrote:mrmonkfinger wrote:but, genuinely, adjusting the caliper properly so as to not have one pad dragging, is the real solution.
Oh right.
From what I understood, the op had a dragging caliper, so noise while NOT braking. Fix the dragging (ie sort the caliper) = remove the stimulus = get no noise. The disc would still be prone to resonance, but if no stimulus, that doesn't matter, no?0 -
Giraffoto wrote:It would raise the standards of the physics part of this debate if the main protagonists would let us know the details of their qualifications, relevant experience (forums don't count) and published papers. Followed by another explanation of their point of view
Which makes me eminently suitable as a forum genius, and don't you forget it.
My point of view - cydrandomnumber is funny, in a sad way.I don't do smileys.
There is no secret ingredient - Kung Fu Panda
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Parktools0 -
Giraffoto wrote:main protagonists
what counts as a main protagonist?0 -
mrmonkfinger wrote:Giraffoto wrote:main protagonists
what counts as a main protagonist?
On the internet you can be an 18 yr old sex goddess, if you want.I don't do smileys.
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools0 -
mrmonkfinger wrote:The Beginner wrote:mrmonkfinger wrote:but, genuinely, adjusting the caliper properly so as to not have one pad dragging, is the real solution.
Oh right.
From what I understood, the op had a dragging caliper, so noise while NOT braking. Fix the dragging (ie sort the caliper) = remove the stimulus = get no noise. The disc would still be prone to resonance, but if no stimulus, that doesn't matter, no?
We've gone far beyond the OP and his problem - let's face it, he probably got it completely fixed two and a half months ago, when either he or some other party sorted out that dragging caliper.mrmonkfinger also wrote:giraffoto wrote:main protagonists
what counts as a main protagonist?Specialized Roubaix Elite 2015
XM-057 rigid 29er0 -
cooldad wrote:mrmonkfinger wrote:Giraffoto wrote:main protagonists
what counts as a main protagonist?
On the internet you can be an 18 yr old sex goddess, if you want.
lolita_3001414, is that you?Specialized Roubaix Elite 2015
XM-057 rigid 29er0 -
cooldad wrote:On the internet you can be with an 18 yr old sex goddess, if you want.Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0
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Locked."Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0
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