Cayman GT4: Where are we up to now?
- Thread starter Motorhead
- Start date
Indeed Jeff, it's easy for these magazines to patch together a plausible array of Porsche's consistent & repetitious development plans and products features. But the GT4 is a new direction and isn't likely to follow the typical power hikes and bundling of components that is usually the ingredients of other specials.
I have been told of such tests, but not with those high numbers. I am sure I was told 10 stops on steels and 20 stops on PCCB from a much lower speed, or some thing like that, may have been even less on PCCB, I did not take a much notice when I was told and have forget the details. a oem Porsche cannot and would not do 170mph stops 25 times in a row that's for sure. I would say 6 stops at 100mph would induce fade and braking distance on oem pads.
It has passed me by.. At Anglesey track day if I recall Looked very nice
I think that I saw the quote initially in a later edition of Frere's Porsche 911 Story which preceded his Boxster book. The late Paul Frere was "an engineer, journalist and former top-flight racing driver who enjoyed a long-standing relationship with the Porsche company", so you have give some credence to what he says. However, given his close association with the Porsche race department, it's possible that he got the wrong end of the stick when told about this and the spec applied [applies?] only to the race cars and not the production cars. BTW, for a modern Porsche the spec would approximate to 25 consecutive 0.9g stops from 150 mph to 60mph. Jeff
Anyone know how much they're asking for this?
Thanks Cecil, yes I know ChrisW but it was only a tentative enquiry for now [
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fbr
New member
Jeff Staying with the subject of brakes, I think that you are fairly close to the mark re brake testing. Have a look at European Homologation of Braking Systems Motor Vehicles, M1 Regulation No. 13H ECE if you are really interested in the definitive word for brake tests applied newer (up to 2004, the modern amendments are even longer) cars: http://inform.wabco-auto.com/intl/pdf/815/000/051/815_051t3.pdf UNECE (United Nations Economic Commission for Europe) is the international umbrella organisation for what we might think of as Construction and Use Regs. Hint : It's a bit long and the table of contents is a useful guide
. Look here for a more modern (2012) and simple explanation of how the ECE regulations affect new motor vehicle and their homologation. http://www.activetest.eu/pdf/workshop2/03_lafuente_idiada.pdf For instance this document gives useful definitions of vehicle types referred to in WCE Reg 13 - eg M2 for small passenger cars. If you find that long winded and like real stress tests demanded by Porsche for there newer models (991) how about 5 cycles of 600 1.6g stops from 190 to 60mph ? Don't believe me look at about 49' 30" on this video of an lecture given Darrick Dong , the Director of Motorsport for PFC Brakes: http://vimeo.com/88695225 It's about a one hour lecture so make some coffee, light your pipe, sit back and relax. It's worth the watch. Enjoy FBR
As I am not driving, it's a bottle of Albarino for me.
fbr
New member
Ralph Good man - it's safer than "shaking hands with Jesus" ... FBR PS Ralph - if you look on the second video on the PFC link, which is largely a repetition of the first, you will see a short reference to how ABS is sometimes used as a strategy to cope with mismatched front-rear piston calliper areas that is apparently used by some manufacturers as an off the peg rather than a custom solution.
Just finished watching, off to bed now.. ha ha So much data acquisition and engineering, I wonder how Fangio, Moss et al were ever able to drive without all this technology
What about deviating stitching?ORIGINAL: ChrisWIs that Maritime or Mexico blue ?? It looks great to me ...ORIGINAL: daro911 Will we see exclusive GT4 colours too like the Met Green Cayman R[&o]
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