Crown

Board: Porsche - 911 - 997 - Turbo Language: English Region: Worldwide Share/Save/Bookmark Close

Forum - Thread


    Re: Any hard objective facts comparing PCP and steel brakes

    Folks-

    I can see both sides of the discussion. The only thing that irritated me was some young 'whipper-snapper' saying that Colm and I were overeducated and underpaid - I founded and sold 2 companies for a large profit, I have found that as I mature, I just tend to be more careful about my money.

    I also liked Frayed's input for more data (as well as his avatar - I look like Notle most of the time).

    Here are some probably irrelevant data:

    Porsche SuperCup and Carrea Cup 2007 GT Rules on brakes:

    Brakes
    The braking system may be replaced by any system from
    the Porsche range and can be chosen freely within the
    following parameters:
    * Max. brake disc diameter 380 mm
    * On the front axle, max. 6 piston brake calliper
    * On the rear axle, max. 4 piston brake calliper
    * Max. 2 brake pads per brake calliper
    * Brake discs and rotors must be of metallic material.
    * It must be a 2 circuit braking system.
    There are no regulations governing brake ventilation on
    the front axle.

    SCO LeMans (including American Le Mans) - 2007 LM GT Rules

    12.2 - Brake rotors must be made of steel
    12.2.1 - Brake callipers shall be made from aluminium materials
    (elasticity modulus < 80 Gpa).
    12.2.2 - Only one calliper (maximum 6 pistons) per wheel is
    permitted.
    12.2.3 - Pistons (brake plungers) must have a round section.
    12.3 - Disc brakes :
    12.3.1 - Number : one brake rotor maximum per wheel.
    12.3.2 - Material : ferrous exclusively.
    12.3.3 - Brake pads : two per wheel maximum.

    Grand Am 2007 GT Rules

    SECTION 8 - BRAKES
    8-1 Brake Rotors
    8-1.1 Only magnetic cast iron or cast steel rotors.
    8-1.2 Maximum rotor diameter:
    Prep 1 - OEM diameter or as described in car specsPrep 2 - 330 mm
    8-2 Brake Calipers -
    8-2.1 Only one two-piece (split into two halves) brake caliper of aluminum alloy, with amaximum of four pistons and two pads per wheel is permitted. Maximumcaliperstack width is 78mm.
    8-2.2 Titanium pistons are allowed in brake calipers.
    8-2.3 The brake pedal must operate all four wheels through a dual master cylinder system.
    8-2.4 Anti-lock/ABS brakes are prohibited on prep 2 cars. Factory installed ABS allowed on
    prep 1 cars as approved.
    8-2.5 Prep 1 cars may use prep 2 brakes.

    ---------------------------------------------------
    So these series may be trying to level the playing field by miniminizing cost, or doing additional testing. Who knows? It is clear that the PCCBs are more responsive, and weigh about 50% less unsprung, but in none of the Porsche material that I have read does it say that the PCCB braking distance is shorter than the steel brake option - the Motor Trend says the PCCBs stop from 60mph in 99 feet, MotorWeek in 107 ft, and Road and Track 107 ft.. We shall see.

    I think the statement that RC said makes sense - "Regarding track racing: for serious semi-professional track racing over more than a dozend of rounds, I would recommend the steel brake for cost reasons.
    For street driving and casual track racing, the PCCB is much better from many points of view. Stopping distance at higher speeds, fading on hotter days, lower unsprung weight, etc. And maybe the PCCB even looks better."

    Thanks for listening once again - Gerry

    -------------------------------
    2007 997 Turbo - Jan Build
    2005 GT3 - in shop
    2002 996TTX50 - gone and sorrely missed
    1995 993 GT2 - driver (not owner)
    1993 RSA
    1992 911 Turbo S2
    1980 SC- best car ever made

    Re: Any hard objective facts comparing PCP and steel brakes

    Quote:
    DJ996 said:
    IMO, the PCCBs probably make a marginal difference on a heavy street car with an amateur driver in terms of lap times.


    actually i think its with an amateur where it would make the biggest difference

    Re: Any hard objective facts comparing PCP and steel brakes

    I would disagree. Even experienced track drivers rarely use their brakes (steel) to the full potential.

    Re: Any hard objective facts comparing PCP and steel brakes

    PCCB is Brill compared to st 6 pots on the 997TT no comparison

    1 new rotor for the latest version Pounds900

    996TT 2 track days this year 1 set of front disc's ? my pal 7 track days in his with PCCB no parts or wear and can brake 30% later than steels , Walter Rohl stated clearly on his interview that he though the PCCB was the best ceramic currently available for fast road and track use in early 2006 ?

    Re: Any hard objective facts comparing PCP and steel brakes

    yep no comparison between PCCB and steels even with the new 6 pots

    The PCCB is awesome and yes of course no brake dust oh god that makes like easier, and prices to replace rotors is no where near what it used to be on ceramics !!

    Re: Any hard objective facts comparing PCP and steel brakes

    Quote:
    Tboner said:
    PCCB is Brill compared to st 6 pots on the 997TT no comparison

    1 new rotor for the latest version Pounds900


    Is that the price for a new version of a PCCB rotor or steel? That's for the new larger ones (997TT and GT3)? That price seems too high for steel and too low for PCCB...

    Re: Any hard objective facts comparing PCP and steel brakes

    New version only i am told

    Re: Any hard objective facts comparing PCP and steel brakes

    STill $5K to replace ceramic disc.....which is fairly hefty from most folk's pocket books.

     
    Edit

    Forum

    Board Subject Last post Rating Views Replies
    Porsche Sticky SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II) 3/28/24 3:21 AM
    watt
    689549 1780
    Porsche Sticky Welcome to Rennteam: Cars and Coffee... (photos) 2/19/24 11:51 PM
    Wonderbar
    409227 564
    Porsche Sticky OFFICIAL: Cayman GT4 RS (2021) 5/12/23 12:11 PM
    W8MM
    255735 288
    Porsche Sticky OFFICIAL: Porsche 911 (992) GT3 RS - 2022 3/12/24 8:28 AM
    DJM48
    234990 323
    Porsche Sticky The new Macan: the first all-electric SUV from Porsche 1/30/24 9:18 AM
    RCA
    65524 45
    Porsche Sticky OFFICIAL: Taycan 2024 Facelift 3/15/24 1:23 PM
    CGX car nut
    4646 50
    Porsche The moment I've been waiting for... 2/1/24 7:01 PM
    Pilot
     
     
     
     
     
    857969 1364
    Porsche 992 GT3 7/23/23 7:01 PM
    Grant
    774025 3868
    Porsche OFFICIAL: New Porsche 911 Turbo S (2020) 4/6/23 7:43 AM
    crayphile
    447921 1276
    Porsche Welcome to the new Taycan Forum! 2/10/24 4:43 PM
    nberry
    378937 1526
    Porsche GT4RS 2/22/24 5:16 AM
    tso
    365656 1424
    Porsche Donor vehicle for Singer Vehicle Design 7/3/23 12:30 PM
    Porker
    360817 797
    Others Tesla 2 the new thread 12/13/23 2:48 PM
    CGX car nut
    354764 2401
    Lambo Aventador and SV 3/30/23 1:59 PM
    CGX car nut
    279207 724
    Ferrari Ferrari 812 Superfast 4/21/23 8:09 AM
    the-missile
    275588 550
    Porsche Red Nipples 991.2 GT3 Touring on tour 3/14/24 8:55 PM
    blueflame
    272563 658
    Porsche Collected my 997 GTS today 10/19/23 7:06 PM
    CGX car nut
     
     
     
     
     
    248235 812
    Lambo Huracán EVO STO 7/30/23 6:59 PM
    mcdelaug
    225100 346
    Others Corvette C8 10/16/23 3:24 PM
    Enmanuel
    217944 488
    Lotus Lotus Emira 6/25/23 2:53 PM
    Enmanuel
    196783 101
    Others Gordon Murray - T.50 11/22/23 10:27 AM
    mcdelaug
    155329 387
    Porsche Back to basics - 996 GT3 RS 6/11/23 5:13 PM
    CGX car nut
    126908 144
    Ferrari [2022] Ferrari Purosangue (SUV) 4/15/23 5:20 AM
    watt
    120502 141
    BMW M 2024 BMW M3 CS Official Now 12/29/23 9:04 AM
    RCA
    105981 303
    Motor Sp. 2023 Formula One 12/19/23 5:38 AM
    WhoopsyM
    102506 685
    Others Valkyrie final design? 4/28/23 2:45 AM
    Rossi
    97647 219
    Porsche 2022 992 Safari Model 3/7/24 4:22 PM
    WhoopsyM
    81044 239
    AMG Mercedes-Benz W124 500E aka Porsche typ 2758 2/23/24 10:03 PM
    blueflame
    74337 297
    Porsche 992 GT3 RS 3/3/24 7:22 PM
    WhoopsyM
    52123 314
    Motor Sp. Porsche 963 3/16/24 9:27 PM
    WhoopsyM
    23092 237
    132 items found, displaying 1 to 30.