Hello


I am not a manufacturer, but I have invented and sold technology that has had worldwide success under the name ‘NRS’ a metal-Velcro®-that locks brake pad friction to the steel back plate.


My latest brake technology is NuPad which solves brake NVH (noise, vibration harshness) including intolerable judder and squeal. No other solution exists.


Each wheel’s NVH is different.

It is well known that FORCED SLIDING ANGULAR CONTACT creates vibration, such as with chair-table legs, chalk, cutting tools, -and brake pads.


THE ANGLE

Manufacturing tolerances for a caliper and its vehicle’s hub and mounts means that each installed brake has a unique stack of tolerances and each pad makes unique ANGULAR CONTACT with the disc, always from its edge, resulting in a life-long NVH angled wear plane. 


Each brake use forces the pad flat by SPRINGING  the rigid caliper slightly, the root cause of brake NVH.


The solution is NuPad which guarantees a central and neutral wear plane eliminating NVH.


No-cost NuPad technology can be applied to all existing friction materials and pad designs.


NHV also impedes braking because as the pad vibrates on-off the disc, there is only breaking half the time.



Briefly:

NuPads have a SLIGHTLY raised (~0.010”  ~.5mm) centre on which the pad pivots slightly to match its caliper’s unique installed angle. It then wears quickly to full centered contact. Grinding a NuPad is quick and accurate.


I can convert samples of your existing pads to NuPads for your evaluatio

Some Background



Expert Quotes:

“Brake noise, even for vehicle manufacturers, continues to be the single largest brake warranty item, even after many hundreds of hours are spent on both brake dynamometer and vehicle to eliminate brake noises for each new vehicle platform,” observes Bob Peters chief engineer, friction material engineering with Akebono Brake Corporation. “The fact is that brake noise is nearly impossible to simulate on the computer and, consequently, most noise mitigation work is done on actual parts, using both special noise dynamometers and on the vehicle. This is expensive and time-consuming.” [and unsuccessful]

   

 

“In the last few decades, there have been extensive studies on analysis and investigation of disc brake vibrations done by many researchers around the world on the possibility of eliminating brake vibration to improve vehicle users' comfort. Despite these efforts, still no general solution exists.”


“Friction-induced vibration and noise emanating from car disc brakes is a source of considerable discomfort and leads to customer dissatisfaction. The high frequency noise above 1 kHz, known as squeal, is very annoying  and very difficult to eliminate.” 

    https://www.researchgate.net/publication/258994745_Recent_Studies_of_Car_disc_Brake_Squeal

   

“New Jersey lawsuit claims genuine Audi replacement brake pads and rotors are defective on Q7 model.

Audi Q7 squeaky brakes have caused a class-action lawsuit filed for all New Jersey  citizens who had brakes installed by Audi dealers between July 19, 2012, to the  present.”

“BMW was hit this week with a class action lawsuit over excessive brake squeal. In July, we reported that a similar law suit against Audi was settled.” The Brake Report Aug 8 2021

 Media News  

  

“In the last few decades, there have been extensive studies on analysis and investigation of disc brake vibrations done by many researchers around the world on the possibility of eliminating brake vibration to improve vehicle users' comfort. Despite these efforts, still no general solution exists.”  


https://www.researchgate.net/publication/258725751_Experimental_Studies_of_Automotive_Disc_Brake_Noise_and_Vibration_A_Review


“…. I hate brake squeal, I actually have an existing noise on my truck, tried 2 sets of different pads and rotors front and back and still can’t get rid of the noise!”

    J. Dutton, Florida, Auto parts salesperson