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Carbon Fibre Wheels.

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Old 10-14-2014, 07:38 PM
  #16  
hacker-pschorr
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Originally Posted by Speedtoys
That's right..bad idea.
Not according to Christian von Koenigsegg .

http://www.roadandtrack.com/car-vide...gg-one-1-wheel






Do I think the wheels posted by UpFixenDerPorsche are of the same quality as a Koenigsegg unit? Not a chance, but it's a start.
Old 10-14-2014, 07:55 PM
  #17  
Speedtoys
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Originally Posted by Hacker-Pschorr
Not according to Christian von Koenigsegg .

http://www.roadandtrack.com/car-vide...gg-one-1-wheel






Do I think the wheels posted by UpFixenDerPorsche are of the same quality as a Koenigsegg unit? Not a chance, but it's a start.


Agreed, it's a start.

But then again, if you have unlimited funds, you don't care how many you damage with casual contact, or if it costs you the weekends $12 trophy.
Old 10-14-2014, 10:51 PM
  #18  
Gabe Newell
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I have a set of these on a 991 C4S.

The "ride quality" is improved noticeably over the stock wheels - specifically road shocks are damped better across the frequency range (I don't know what a real car engineer calls this). They also seem to have a different (preferable) behavior around changing lateral loads. These are in addition to what I expected from reduced unsprung weight.

In the Tudor USC, wheel weights have lower bounds which are above the CF weights.

They are happy to tell you specific weights (CarbonRev) for specific wheel sizes.

I like them a lot, and am looking forward to their CL version. I also like the people at CarbonRev that I have talked to.

I have zero data on cost curves, and in that blissfully ignorant state would think there isn't a reason for them not to come down in price with volume and competition. How's that for useless Internet opinionating?
Old 10-14-2014, 11:17 PM
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SeanR
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Originally Posted by Gabe Newell
I have a set of these on a 991 C4S.

The "ride quality" is improved noticeably over the stock wheels - specifically road shocks are damped better across the frequency range (I don't know what a real car engineer calls this). They also seem to have a different (preferable) behavior around changing lateral loads. These are in addition to what I expected from reduced unsprung weight.

In the Tudor USC, wheel weights have lower bounds which are above the CF weights.

They are happy to tell you specific weights (CarbonRev) for specific wheel sizes.

I like them a lot, and am looking forward to their CL version. I also like the people at CarbonRev that I have talked to.

I have zero data on cost curves, and in that blissfully ignorant state would think there isn't a reason for them not to come down in price with volume and competition. How's that for useless Internet opinionating?
Thanks for the real world comments. I'd love to see some pictures of your car too.
Old 10-15-2014, 12:02 AM
  #20  
69gaugeman
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Originally Posted by Speedtoys
Great chat about gyroscopes.


But thats not the same a unsprung mass for acceleration.
I agree. But the wheels are big gyroscopes. That's why turn in is easier. That's why response is faster, that's why steering feel is better. That was my point.
Old 10-15-2014, 11:51 AM
  #21  
Tom in Austin
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I love it ... "reinventing the wheel"!

In bicycle frames CF has a shock-absorbing behavior that sets it apart from materials of equal or greater stiffness like steel alloys, aluminum and titanium. Maybe that property is inherent in CF and would be present to some extent in auto wheels as well ?
Old 10-15-2014, 02:00 PM
  #22  
Tony
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cheaper solution..

:40 sec mark

Old 10-15-2014, 06:55 PM
  #23  
Speedtoys
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Originally Posted by 69gaugeman
I agree. But the wheels are big gyroscopes. That's why turn in is easier. That's why response is faster, that's why steering feel is better. That was my point.
+2
Old 10-15-2014, 07:22 PM
  #24  
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WICKED! Thats a cool video and technique!
Old 10-16-2014, 02:08 PM
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Dean_Fuller
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$15K for a set???? Good grief !!! Now if that includes the valve stems...we are good.
Old 10-16-2014, 03:45 PM
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15k rims?

I rather get myself another 928, then change it into a track car.
Old 10-16-2014, 08:52 PM
  #27  
UpFixenDerPorsche
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Originally Posted by Hacker-Pschorr
Not according to Christian von Koenigsegg .

http://www.roadandtrack.com/car-vide...gg-one-1-wheel






Do I think the wheels posted by UpFixenDerPorsche are of the same quality as a Koenigsegg unit? Not a chance, but it's a start.
Originally Posted by Speedtoys

Now..who wants a set of bang-em-up CF wheels on YOUR race car?

Show of hands? That's right..bad idea.

Do I detect a bit of put down going on?

I do make it a point not to post rubbish, hence the two links included in my opening post. Very informative.

This is from one of the links. Listen to the reply re Koenigsegg. No put down; just an explanation of the differences and the different manufacturing goals.

And FWIW I drool over Koenigsegg.

http://www.carbonrev.com/news-media/#.VEBQZhZldco
Old 10-17-2014, 01:11 PM
  #28  
Speedtoys
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Nobody said it was rubbish.

But given a bottomless budget, in some show racing...sure..a CF wheel makes good fapware.

Club racing, forget it..wheels are just bumpers on the side of your car.
Old 10-17-2014, 01:52 PM
  #29  
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Leno seems a little unimpressed after a test drive. Wasn't there another carbon fiber rim manufacturer (Dymag?) that had a few breakages and then became defunct?

Different design though




What about just getting some BBS E85's?

It is intriguing though.

Last edited by PiB993; 10-17-2014 at 01:54 PM. Reason: YouTube link problem
Old 10-17-2014, 06:08 PM
  #30  
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$15k wheels are perfectly fine on cars worth north of $100k. The average value of all the 928's left on the road is likely between $15 and $20k. We don't want to devolve into a community that spends as much or more on wheels and tires than our cars are worth.

I read an article the other day that claimed prices for CF will fall by 90% in the next few years. Making it feasable for the oem's to make far more components out of it. If that happens and CF wheel prices come down into the $4-5k per set range, I'll revisit the subject.


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