New larger PCCB brakes for 991.2 GT3??
#1
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New larger PCCB brakes for 991.2 GT3??
New Pana Turbo S Hybrid has even larger rotors than 918 and previous GT cars (420mm dia and 40mm thick!). Guess these come to new GT cars??
And 10-piston calipers??
#2
Race Director
That thing is probably pretty heavy, so assuming it needs bigger brakes. Not sure the GT3 does!
#3
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Also speed has much more impact on braking requirements than weight (squared function vs. just simply proportional). Of course that Pana TS Hybrid is both very heavy and very fast...
#4
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Another cool thing about those 10-piston calipers is that they probably have top mount pads (probably at least 4 pads per wheel) where you don't have to remove the calipers to change pads (like the good ole days)...
Here's a 12-piston caliper for ideas of what it could look like (each of those rods is unthreaded and removed and pads pulled out the top when changing pads). I could image one longer pad and one shorter pad on each side of the rotor with 10 piston design:
http://www.autoblog.com/2007/04/20/w...iston-caliper/
Multiple smaller pads will help with the pad taper wearing problem...
Here's a 12-piston caliper for ideas of what it could look like (each of those rods is unthreaded and removed and pads pulled out the top when changing pads). I could image one longer pad and one shorter pad on each side of the rotor with 10 piston design:
http://www.autoblog.com/2007/04/20/w...iston-caliper/
Multiple smaller pads will help with the pad taper wearing problem...
Last edited by GrantG; 03-01-2017 at 12:44 PM.
#5
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Grant, other than the benefit of no brake dust, I have a hard time justifying the cost of PCCB's. Porsche regular brakes are phenomenal.
#6
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PCCB brakes (aside from being incredibly expensive) offer the advantage of higher thermal limits and less frequent pad/rotor changes (should be really amplified with the now much larger discs) - this means less frequency of removing the wheels/calipers and all the attendant headaches I mentioned above. Now if only the tires would last longer too...
#7
Drifting
wow 10 piston fronts!
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#10
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I beieve the Cayenne Turbo also comes with those new 10 piston PCCB.
#11
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I guess we'll find out in a few days whether these huge brakes are reserved for trucks and sedans or GT3 also...
#12
Three Wheelin'
Adding PCCBs as standard equipment will most likely drive the MSRP of the .2 GT3 into a rarefied area. Not convinced PAG would do so. The PCCBs are fantastic but market considerations would likely dictate keeping the standard rotors unless PAG wants to push the GT3 into another ZIP code.
#13
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Adding PCCBs as standard equipment will most likely drive the MSRP of the .2 GT3 into a rarefied area. Not convinced PAG would do so. The PCCBs are fantastic but market considerations would likely dictate keeping the standard rotors unless PAG wants to push the GT3 into another ZIP code.
#14
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I found a cut-away render of the 10-piston calipers from the Cayenne Turbo S. Interesting that there are two rows of pistons still using just 2 pads per wheel. Also seems unlikely that the pads slip out the top. Sorry for the tangent - I now doubt that these are destined for the sports cars (they were around at time of 991.1 RS launch and not used then).
I guess it's back to plan A: Iron rotors with Race Technologies (Brembo) RE-10 pads (and lots more money in my wallet).
I guess it's back to plan A: Iron rotors with Race Technologies (Brembo) RE-10 pads (and lots more money in my wallet).
Last edited by GrantG; 03-01-2017 at 04:35 PM.