Quote:
Originally Posted by UCF w00t
I don't understand how people are saying this is harmonic related. That doesn't make sense to me. The breaks barely move. In order to have a harmonic issue, they need to be moving in a constant fashion (e.g. spinning) causing an imbalance which creates noise at a frequency. Breaks don't move at any sort of frequency! It's not like these are on the rotor or something. Squealing breaks isn't caused by some sort of harmonic imbalance it's caused by friction. That's why break pads aren't made out of some plain ol metal as they would squeal like a mofo every time you tapped the breaks. Obviously this is a bandaid for something but a harmonic imbalance, I think not.
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I do see your point. But Harmonic resonances can come from any system under pressure. like hydraulic brakes squeezing pads against a rotating disk.
I'm reaching way back to my days in the Navy here so bear with me. But, Hydraulic systems are extremely prone to pressure related squeals, vibrations, or even howls based on many different forces. It's possible that under a common brake pressure and a common vehicle speed that the brakes themselves squeal when everything is at that exact point to cause the resonance. It does make sense that adding weights will reduce the frequency at which the resonance occurs changing the dynamic of the forces causing it. It's always better to reduce the cause of the resonant frequency than to cover it up for sure. But I'd prefer to add weight than to say add a bushing that just hides the vibration. Adding the weight actually reduces the vibration. Even though the brakes don't rotate like the rotor does, it still is affected by the rotor and pressure.
For what it's worth.
