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The first auction is in the books for 2019. There were plenty of surprises that had me scratching my head. I have been to many auctions and obviously somebody had a few too many to drink when they went to flying their paddles in the air last week!
TOP TEN KISSIMMEE 2019 VIEW ALL LOTS
LOT S1142014 Ferrari LaFerrari418 Miles, Special-Order Rosso Fuoco Sold for $3,300,0002
LOT F1241967 Shelby GT500 Super SnakeThe One-of-One Shelby Supercar Sold for $2,200,0003
LOT F151The 1969 L88 Corvette OfferingTwo Tuxedo Black L88s Sold as a Pair Sold for $990,0004
LOT S1031930 Duesenberg Model J Torpedo PhaetonJ-255/2276 Sold for $935,0005
LOT S1711969 Chevrolet Camaro ZL14-Speed, No. 15 of 69 Produced Sold for $495,0006
LOT S1491954 Chrisman Bonneville CoupeHot Rod Cover Car, Bonneville Record Setter Sold for $484,0007
LOT F1011966 Shelby GT350 FastbackSFM6S061, 1 of 252 Carryover Cars Sold for $440,0008
LOT F981955 Imperial ConvertibleOne-of-a-Kind Custom Build Sold for $418,0009
LOT S1741963 Chevrolet Corvette Z06NCRS Duntov Mark of Excellence Sold for $396,00010
LOT S2242005 Ford GTSupercharged 5.4L, 1,499 Miles Sold for $352,000
Porsche’s Natural Fiber Is Like Carbon Fiber Made From Plants
The 718 Cayman GT4 Clubsport debuted with a wing and doors made from flax. This could be the future of composites.
BY CHRIS PERKINSJAN 7, 2019
One of the most surprising things about Porsche’s new 718 Cayman GT4 Clubsport is the material it uses for its doors and wing. At a quick glance it looks like carbon fiber, but it’s not. Instead, Porsche is making these parts from what it’s calling “natural fiber.”
What is natural fiber? It’s a material made primarily from flax. Yes, that flax—the same plant that produces edible seeds and whose fibers are used to make linen. And now, race car parts.
So what’s the point of developing a new material that serves the same function as carbon fiber? Sustainability. At the Daytona reveal of the new GT4, Eduard Ene, Porsche Motorsport’s composites expert, told us that producing the raw materials to make natural fiber takes 75 percent less energy than carbon fiber. Ene also pointed out that natural fiber can be ground down to be reused for different purposes, whereas carbon fiber needs to be burned at a very high temperature to be disposed of.
There are functional benefits, too. Carbon fiber is a very strong material, but when it breaks, it splinters dramatically. This natural fiber, according to Ene, has five times better vibration dampening properties than carbon fiber, so it doesn’t splinter when hit hard. On the race track, that’s great because it means there’s less cleanup after an accident.
Porsche showed off a few different ways to make this material, including natural fiber reinforced plastic—which is very similar to carbon fiber reinforced plastic—and a natural fiber sandwich, which uses a balsawood core. These woven materials are pressed into shape using the same methods used to make carbon fiber parts. The doors on the new GT4 are made using a resin transfer molding process while the wing is made with a pre-impregnated process.
The doors weigh 11.2 pounds, making them a little heavier than the 9.9-pound carbon-fiber doors used on the previous Cayman GT4 Clubsport. The wing on the new car weighs 8.6 pounds, but since it’s significantly bigger than that of previous GT4, there’s no direct weight comparison.
And while natural fiber has superior vibration dampening properties, it’s not nearly as strong as carbon fiber. It can only be used for the doors in the 718 Cayman GT4 Clubsport because there’s a roll cage in place to ensure driver safety. That’s why you won’t see these doors in the upcoming 718 Cayman GT4 street car.
Ene said that natural fibers could be used to make non-structural components in a production road car, like fenders, hoods, or wings. Porsche wants to do this eventually, but it’s a little ways off. The company started with the 718 Cayman GT4 Clubsport because production is fairly limited and the visual finish of the components doesn’t really matter as they’re just going to get liveried up anyway.
Despite using a lot less energy to produce, natural fiber is still more expensive than carbon fiber, but that could change as the material is developed further. That development already started this past weekend, as a squad of 718 Cayman GT4 Clubsports hit the banks of Daytona in testing for the four-hour BMW Endurance Challenge later this month. These new GT4s will be racing all over the world this year, putting this new material to the ultimate test.