NuPad follows my famous brake invention known as NRS from Nucap Industries.


Quiet brakes don’t vibrate. Sliding contact at a slight angle induces noisy vibration.

Small manufacturing TOLERANCES inherent in all components, STACK UP on final assembly so pads and disc must always be at a slight, random angle. Some unknowable % must also be angled against rotation to vibrate intensely with a costly warranty-squeal that also weaken the pad bonding. Despite research over decades, this exact cause never discovered, nor was a ‘fix’.


NuPad's surface design eliminates the angle, and noise, and the danger. Samples at www.InVenture.ca


Production tolerances that stack together on brake-vehicle assembly include:

‍ • calipers: piston, cylinder, slide-pins and holes, and attachment bosses and holes; 

‍ • pad: imperfect flatness, thickness;

‍ • discs: concentricity, axle-hub, disc flange face and bearing bores;

‍ • vehicle: cast/machined caliper brackets, steering knuckles, hub carriers bosses and bolt holes;

‍ • the jigs, fixtures, and tooling used in manufacture, and their changing condition with use;

‍ • final brake and vehicle condition at installation, damage, burrs, defects, and bolt torques.


NuPad brake pads have an imperceptibly raised (~0.010) fast-wearing centre on which pivots at first contact to begin wear-in at the that slight angle eliminating the cause of vibration, and with it, noise and squeal.


NuPads don’t require wasteful chamfers making them safer, cheaper, quieter, longer lasting, lighter and with less dust release than chamfered/shimmed pads.

‍                

In addition, NuPad is a ‘no-cost’ solution. With a standard brake grinder the pad is finish ground with two slightly angled flats, or facets, from the pad centre to each end at about a 0.1 degree / 0.010” / 0.2 mm slope. This creates the required imperceptibly higher contact centre. It can be done in one pass using two angled grinding wheels (pat pend). A four faceted shallow pyramid face and other raised-centre geometries are also contemplated. A better-faster method has also been devised. 

‍ 

And a method has been devised to validate this hypothesis.


Traditional friction chamfering is not a NVH fix but does reduce safety from its smaller contact area and increases pad wear from reduced friction volume, and increases toxic brake dust from faster wear, chamfering also results in brakes too big and heavy for what is functionally a smaller pad. Unneeded weight reduces EV range, fuel economy, performance, and handling. Brake shims are another no-fix (8 per car), that cost OEM’s more millions. 


The NuPad patent applications are for sale offering decades of huge earnings from a small purchase cost.


Contact: Winston MacKelvie, Inventor, (90+) 

winstonworks@me.com Tel 1-450-243-6850 Txt 1-450-330-4293 

www.inventure.ca


Some Background


“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]

‍    https://thebrakereport.com/aftermarket-search-quieter-brake/

‍ 

Expert Quotes:

“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.netpublication258725751


“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.”  

www.researchgate.netpublication258725751 


“…. 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