Yellowing Carbon Fiber - Page 17

peloton · 04-12-2008, 12:30 PM

I just picked up a CGT this week so I'll chime in. Some of the carbon parts on my car are showing a little bit of yellowing. For example, the inner doors show a bit of a yellow tinge when viewed in same line of sight with the carbon in the floor area of the passenger tub.

My view on this as I think of a bit of yellowing as a patina that develops with age. My car was first delivered in Feb 05. As long as the yellowing is not structural, it really does not bother me.

lightguy · 04-12-2008, 05:47 PM

MSchumacher ( I've heard that name before

).
Does the resin yellow internally IE below the exposed surface ? Is it the Clearcoat or do CF structures not normally use clearcoat ?
The new Corvette Z06 claims to have UV proof clearcoat on their CF engine cowl. Or are they in for a shock as well ?
Many have the impression that CF weakens in the sunlight via the UV rays.
I worked in comercial aviation and all our CF panels were painted so it was never an issue.

VRAlexander · 04-14-2008, 02:49 PM

Well it looks like streetfire found a resolution to my yellowing problem....lol....

www.streetfire.net Its on their front page..

http://videos.streetfire.net/video/P...tes_157151.htm

VRAlexander · 04-14-2008, 10:58 PM

Well guys, I just spoke with the director of SPEED Chanel, tune in next monday for SUPERCARS EXPOSED. The show will have Eddie Bellos car as well as mine....for The Texas Mile...

Texas Mile video:
http://www.youtube.com/user/VRAlexander
http://videos.streetfire.net/video/V...ord_156299.htm

DreamCarrera · 04-15-2008, 04:44 AM

Quote:

Originally Posted by VRAlexander

Well guys, I just spoke with the director of SPEED Chanel, tune in next monday for SUPERCARS EXPOSED. The show will have Eddie Bellos car as well as mine....for The Texas Mile...

Texas Mile video:
http://www.youtube.com/user/VRAlexander
http://videos.streetfire.net/video/V...ord_156299.htm

Thanks for the heads-up Alex, I'll be sure to tune in.

Bill S. · 04-15-2008, 11:47 PM

Official word from Porsche is that the yellowing CF on the CGT is normal:

D.Keshler · 04-18-2008, 03:44 AM

Yikes, its a shame they don't stand behind this for you.

No matter who you are or where you are in life, you are only as good as your word, even a constructor as large as Porsche.

VRAlexander · 04-18-2008, 05:02 AM

Quote:

Originally Posted by R4][N_M4l{3R

Yikes, its a shame they don't stand behind this for you.

No matter who you are or where you are in life, you are only as good as your word, even a constructor as large as Porsche.

That is 100% correct!! I was over at Jerry Seinfeld's yesterday and even his prototype CGT that he has is showing severe yellowing.

SciFrog · 04-18-2008, 07:53 AM

I saw the yellowing and didn't mind it, gives it sort of a patina... Don't own a CGT though...

Keithr726 · 04-18-2008, 09:19 PM

Quote:

Originally Posted by peloton

I just picked up a CGT this week so I'll chime in. Some of the carbon parts on my car are showing a little bit of yellowing. For example, the inner doors show a bit of a yellow tinge when viewed in same line of sight with the carbon in the floor area of the passenger tub.

My view on this as I think of a bit of yellowing as a patina that develops with age. My car was first delivered in Feb 05. As long as the yellowing is not structural, it really does not bother me.

Nice collection you have there, do you go out to infineon frequently?

peloton · 04-18-2008, 09:25 PM

Quote:

Originally Posted by Keithr726

Nice collection you have there, do you go out to infineon frequently?

I run Infineon 2-3 times a year, mainly I go to Thunderhill and Laguna Seca. What about you?

lightguy · 04-20-2008, 02:04 PM

I think the proper thing to do for Porsche is to admit they screwed up in their original statement that the CF does not yellow as clearly it does.
As far as refinishing, repairing, or replacement; that would not be economically feasible. Possibly not desirable as it is no longer "original".
So a onetime reimbursement could be offered for each SN.
Current owner signs, gets check, SN recorded, and no further action.
Subsequent buyers should be aware that the car has yellowed and can either purchase or not.

VRAlexander · 04-20-2008, 04:05 PM

Quote:

Originally Posted by lightguy

I think the proper thing to do for Porsche is to admit they screwed up in their original statement that the CF does not yellow as clearly it does.
As far as refinishing, repairing, or replacement; that would not be economically feasible. Possibly not desirable as it is no longer "original".
So a onetime reimbursement could be offered for each SN.
Current owner signs, gets check, SN recorded, and no further action.
Subsequent buyers should be aware that the car has yellowed and can either purchase or not.

+1

carreragt558 · 04-24-2008, 10:29 PM

What prototype are you talking about?
The Pre-Production models or the 2000 Paris Motorshow prototype.

VRAlexander · 04-27-2008, 04:33 PM

Quote:

Originally Posted by carreragt558

What prototype are you talking about?
The Pre-Production models or the 2000 Paris Motorshow prototype.

The only one in existence , the one that was going to be crushed:

04-12-2008, 12:30 PM	#241
peloton Addict Rennlist Member Join Date: May 2007 Location: Bay Area Posts: 125	I just picked up a CGT this week so I'll chime in. Some of the carbon parts on my car are showing a little bit of yellowing. For example, the inner doors show a bit of a yellow tinge when viewed in same line of sight with the carbon in the floor area of the passenger tub. My view on this as I think of a bit of yellowing as a patina that develops with age. My car was first delivered in Feb 05. As long as the yellowing is not structural, it really does not bother me. __________________ 05 Porsche CarreraGT GT Silver/Ascot 10 Porsche GT3 Red/Black 91 Ferrari F40 Red/Red 98 BMW E36 M3 Dakar Yellow/Black 09 Mercedes ML63 Black/Black Rennlist member # 070520-6288

04-14-2008, 02:49 PM	#243
VRAlexander User Join Date: Jun 2007 Location: Las Vegas Posts: 245	Well it looks like streetfire found a resolution to my yellowing problem....lol.... www.streetfire.net Its on their front page.. http://videos.streetfire.net/video/P...tes_157151.htm Last edited by VRAlexander; 04-14-2008 at 10:58 PM.

04-12-2008, 05:47 PM	#242
lightguy Addict Rennlist Member Join Date: Mar 2007 Location: Here and Now Posts: 261	MSchumacher ( I've heard that name before ). Does the resin yellow internally IE below the exposed surface ? Is it the Clearcoat or do CF structures not normally use clearcoat ? The new Corvette Z06 claims to have UV proof clearcoat on their CF engine cowl. Or are they in for a shock as well ? Many have the impression that CF weakens in the sunlight via the UV rays. I worked in comercial aviation and all our CF panels were painted so it was never an issue.

04-14-2008, 10:58 PM	#244
VRAlexander User Join Date: Jun 2007 Location: Las Vegas Posts: 245	Well guys, I just spoke with the director of SPEED Chanel, tune in next monday for SUPERCARS EXPOSED. The show will have Eddie Bellos car as well as mine....for The Texas Mile... Texas Mile video: http://www.youtube.com/user/VRAlexander http://videos.streetfire.net/video/V...ord_156299.htm

04-18-2008, 07:53 AM	#249
SciFrog User Join Date: May 2005 Location: NY Posts: 261	I saw the yellowing and didn't mind it, gives it sort of a patina... Don't own a CGT though...

04-20-2008, 02:04 PM	#252
lightguy Addict Rennlist Member Join Date: Mar 2007 Location: Here and Now Posts: 261	I think the proper thing to do for Porsche is to admit they screwed up in their original statement that the CF does not yellow as clearly it does. As far as refinishing, repairing, or replacement; that would not be economically feasible. Possibly not desirable as it is no longer "original". So a onetime reimbursement could be offered for each SN. Current owner signs, gets check, SN recorded, and no further action. Subsequent buyers should be aware that the car has yellowed and can either purchase or not.

04-24-2008, 10:29 PM	#254
carreragt558 User Join Date: Jul 2007 Posts: 20	What prototype are you talking about? The Pre-Production models or the 2000 Paris Motorshow prototype.