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Old 01-06-2018, 06:39 PM   #2541 (permalink)
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This is the car Aerohead mentioned.


The Ducati-Powered VW XL Sport Is a Slice of Ultralight Two-Cylinder Awesomeness
October 1, 2014
https://blog.caranddriver.com/the-du...r-awesomeness/


Quote:
Using the compact, carbon-fiber structure of the XL1, the XL Sport is a dream car for number freaks. At 1962 pounds, the XL Sport is heavier than the 1753-pound XL1. Fitting a motor-actuated rear spoiler underscores the fact that low weight wasn’t as much of a priority as it is in the XL1, of which just 250 will be built. The XL Sport’s aerodynamics suffer due to wider tires, the need for downforce, and its hearty appetite for fresh air.
Quote:
It stands on 205/40-18 front and 265/35-18 rear tires and forged-magnesium wheels. Compare the rubber with the XL1’s 115/80-15 and 145/55-16 meats, and the increased drag—the claimed coefficient rises from 0.189 to 0.258—can be viewed with a charitable eye. And even so, this is perhaps the lightest and most aerodynamically efficient sports car on the planet.

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Last edited by kach22i; 01-07-2018 at 08:20 AM..
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Old 01-06-2018, 07:40 PM   #2542 (permalink)
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Old 01-06-2018, 10:09 PM   #2543 (permalink)
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Looks like a VW NSX.
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Old 01-07-2018, 08:20 AM   #2544 (permalink)
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I just don't understand how we have missed this car, the article is from 2014.
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Old 01-07-2018, 09:07 AM   #2545 (permalink)
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Old 01-08-2018, 12:34 PM   #2546 (permalink)
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Quote:
Originally Posted by freebeard View Post
XL1 was a commercial implementation of the earlier concept. Things like hollow gears in the transmission, single seating and the side-hinge door weren't possible even at $$$upercar prices.


https://www.wired.com/images_blogs/autopia/2011/01/vw_one_liter_concept01_2.jpg

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0.26?
Correction - the L1 had 2 seats in tandem. The XL1 has 2 seats side by side, with a slight stagger to make them as narrow as possible, and still be next to each other.
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Old 01-08-2018, 12:36 PM   #2547 (permalink)
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Quote:
Originally Posted by kach22i View Post
This is the car Aerohead mentioned.


The Ducati-Powered VW XL Sport Is a Slice of Ultralight Two-Cylinder Awesomeness
October 1, 2014
https://blog.caranddriver.com/the-du...r-awesomeness/

This car doesn't have the plan taper / narrowed rear wheel track, so it has a higher Cd than the XL1
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Old 01-13-2018, 12:29 PM   #2548 (permalink)
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DOT-ready XL Sport

If the DOT/NHTSA requires mirrors,we might be looking at Cd 0.267.
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Old 01-21-2018, 04:04 PM   #2549 (permalink)
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JAPAN_OTHER JAPAN OTHER | 1990 | RED | 46,000*km | details.- Japanese used cars.Goo-net Exchange

This weirdo Zagato Nissan from Japan doesn't look overall very aero, but it has two interesting features.

There rearview mirrors are faired into the fenders in those ungainly humps.


The wheels are decently aero. They might have even been better if they actually curved those NACA ducts to follow the actual rotation of the wheel.
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Old 01-21-2018, 04:53 PM   #2550 (permalink)
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Back when we were forming and messing with them for engine inlets on the airbus, the critical area was the inlet and taper ratios. Everything else was a dont care.

That one looks mounted backwards.

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