Adnimation ATF





1 of 4 < >

CORVETTE TODAY #164 - My Trip To The Amelia Island Concours

In March of this year, your CORVETTE TODAY host, Steve Garrett, attended the unveiling of the three 1960 Cunningham Corvettes from Le Mans at the Amelia Island Concours. Steve recaps his weekend at Amelia Island and all the events that took place during the show!;
The Cunningham Corvettes were the hit of the entire weekend and you'll hear about the whole story on this episode of CORVETTE TODAY.
2 of 4 < >

Sigala Back As MECF Venodr

What is new? For MECF members, has developed a new customer communications system, trained more staff, and with some inducements is committed to providing your products along their stated completion timelines.
3 of 4 < >

CORVETTE TODAY #163 - Corvette News & Headlines, Late May 2023

Recognizing Memorial Day, there is still a lot of news coming out in the world of Corvette! Keith Cornett from CorvetteBlogger is back on the show with your CORVETTE TODAY host, Steve Garrett, to detail all the important things happening with America's Sports Car.;
Here are a few of the topics covered by Steve and Keith on this week's show:
1. Engineers are spotted in what we think is the C8 ZR1 prototype
2. We have two new E-Ray videos available
3. New Z06 allocations went out in the middle of this month (May 2023)
4. The National Corvette Museum names a new Marketing Director
5. Australia recalls the 2022 C8 Corvette for being too loud
6. Did GM's Instagram page give us a C9 Corvette preview?
4 of 4 < >

2023 Corvette Info Including E-Ray, SR & Z06 Pricing, SR & Z06 Visualizers, 70th Anniversary Info, Press Releases for SR & Z06 & Their Build & Price, Order Guides & Visualizers

2023 Corvette Brochure:
E-Ray Visualizer:
Official E-Ray Press Release: https://www.midenginecorvetteforum.c...-press-release
Official GM E-Ray Pictures: https://www.midenginecorvetteforum.c...and-visualizer
+ 25 KEY E-Ray Components/Factors:
E-Ray Leaked Info/Visualizer: https://www.midenginecorvetteforum.c...tte-e-ray-leak
Z51 & Z06 GM Track Specs: https://www.midenginecorvetteforum.c...ecommendations
Z06 Order Guide:
Z06 MSRP and Options Pricing: https://www.midenginecorvetteforum.c...freight-charge
2023 SR Build & Price: https://www.midenginecorvetteforum.c...up-and-running
*2023 SR & Z06 Official Owners Manual:; and,
* 2023 GM Bash Major Seminar with HQ video: https://www.midenginecorvetteforum.c...ore-bash-video
*2023 Stingray Visualizer:
*2023 Stingray (ONLY Order Guide:
*70th Anniversary Combined Press Release For SR & Z06: https://www.midenginecorvetteforum.c...iversary-model
*Z06 Press Release: https://www.midenginecorvetteforum.c...-press-release
*Z06 Reveal Pictures: https://www.midenginecorvetteforum.c...eveal-pictures
*Z06 Visualizer:
Order Guide (unofficial): https://www.midenginecorvetteforum.c...-action-center
*Z06 vs Z07 Aero Components: https://www.midenginecorvetteforum.c...s-similarities
See more
See less

Interesting new Porsche brake tech

  • Filter
  • Time
  • Show
Clear All
new posts

  • Interesting new Porsche brake tech

    How Porsche Built the Game-Changing Brakes on the 2019 Cayenne

    You've got your iron rotors, your carbon ceramic rotors, and now these: tungsten carbide coated rotors, which offer some of the advantages of both.

    Porsche's new Surface Coated Brake system uses white calipers, a nod to the fact that the mirror-finish tungsten carbide-coated rotors drastically reduce brake dust. There's usually a compromise between brake pad performance and brake dust (high-performance pads tend to generate more schmutz on your wheels) but that's not the only reason Porsche bothers to zap rotors with high velocity oxygen fuel, a process that looks like an extremely one-sided lightsaber battle.

    PSCBs offer some other bennies, which is important since they're a $3,490 option on the Cayenne S, though they're Standard on the Cayenne Turbo.

    On the track or during hard driving—given that we're talking Cayennes, trailering could be relevant, too—a system with iron rotors is going to experience some brake fade as the rotors heat up. During testing, Porsche executed brutal high-speed stops that took both iron rotors and surface-coated rotors up to nearly 1,200 degrees Fahrenheit.

    Over the course of 13 stops, they measured the change in pedal force required to haul down the vehicle, and while both systems required a firmer squeeze of the pedal, the PSCB rotors only experienced half as much fade as the iron brakes. Fun fact: on the Vickers hardness test, iron has a value of around 30 to 80 HV. Tungsten carbide is above 1,000 HV, which is why it's so popular for drill bits.

    As for the PSCB's lack of fade, that because of the unique interplay between the glass-smooth rotors and the specially formulated pads. Since the rotors are so smooth, the pads effectively apply more surface area to the rotor than they would with an iron disc. And under high braking pressure, the pads dig into the rotor surface like a microscopic hook-and-loop fastener—abrading the rotor and generating some dust, but delivering massive stopping power, too.

    Depending on how you drive, Porsche says PSCB creates 90 percent less brake dust and your rotors should last 30 percent longer. And, as expensive as it is, the PSCB option is still about a third the cost of the carbon-ceramic setup. As with the carbon brakes, you get 10-piston front calipers and 4-piston rears. Also like the carbon brakes: no rust on your rotors—ever.

    So why not just make the whole disc out of tungsten carbide? Well, because those rotors would make carbon ceramics look affordable. So instead, Porsche developed a three-part process to apply a 100-micrometer thick layer of tungsten carbide to an iron disc. The core of the rotor is thermally treated and roughed up with a laser to encourage bonding with the galvanically applied intermediate layer—think of it as applying primer before you paint a wall.

    Then comes the main event, the high velocity oxygen fuel spraying process, in which tungsten carbide particles are fired at the disc at supersonic speeds. And yes, that looks as cool as you'd expect. The mirror finish arrives after about 4,000 miles of driving, since the process depends on the pads polishing the rotors.

    While the PSCB system is surely heroic on a track, I'd caution the less hardcore Porsche fans out there to take a drive before checking that particular option box. That's because the surface-coated brakes, with their enormous calipers and super-grippy pads, almost feel like they deliver more stopping power than you can use in normal driving. Around town, you learn to go light on the brake pedal, lest all loose items in the car take a speedy trip toward the windshield and footwells. You get used to modulating the pedal differently than you would in a car with iron, or even carbon ceramic, rotors.

    Right now PSCB is available on the Cayenne only. Depending on how the system is received, perhaps shiny tungsten rotors will find their way elsewhere in the lineup. I bet a 911 would look good with white calipers.

    Photos and a video at the link above.
    Delivered 5/29!: Scarlet Fever 2021 2LT HTC, Red Mist Metallic Tintcoat, two-tone Natural w/ suede inserts, Mag Ride, Performance Exhaust, MRR 755 Gunmetal wheels, Soler throttle controller, SmartTop HTC controller
    >18,000 miles
    Proud member of the Old Dominion Corvette Club:

    Never grow up - It's a trap.

  • #2
    Performance advantages aside, I'm not sure I'd want mirror finish rotors. They might make chrome wheels look sedate by comparison.


    • #3
      Mirror rotors AND chrome wheels! What could be better?

      I've got it: chrome spinners!
      Delivered 5/29!: Scarlet Fever 2021 2LT HTC, Red Mist Metallic Tintcoat, two-tone Natural w/ suede inserts, Mag Ride, Performance Exhaust, MRR 755 Gunmetal wheels, Soler throttle controller, SmartTop HTC controller
      >18,000 miles
      Proud member of the Old Dominion Corvette Club:

      Never grow up - It's a trap.


      • #4
        Porsche has a habit of brake innovation. I remember reading about the “Big Red” 5000 horsepower brakes. They said it would take 5000 hp to accelerate at the rate they could stop.....
        I’m goin’ driving 👍