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Old 30 Apr 2014, 18:11 (Ref:3400091)   #6286
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Question: does the backlit LED strips in the R18's headlights change color under differing light conditions? Photos of the Monza test show them going back and forth between violet, green, red, yellow, orange and very light blue/white.
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Old 30 Apr 2014, 19:07 (Ref:3400117)   #6287
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Question: does the backlit LED strips in the R18's headlights change color under differing light conditions? Photos of the Monza test show them going back and forth between violet, green, red, yellow, orange and very light blue/white.
It changes very quickly. In my photo's of the test at Paul Ricard the lights are continually changing.
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Old 1 May 2014, 11:02 (Ref:3400299)   #6288
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Few pics of the Audi R18 e-tron quattro LM-spec in its race livery:



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Old 1 May 2014, 13:04 (Ref:3400349)   #6289
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Few pics of the Audi R18 e-tron quattro LM-spec in its race livery:



Looks a bit like the old Peugeot 905 or is that me?
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Old 1 May 2014, 13:05 (Ref:3400350)   #6290
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Those angled out headlights are horrible.
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Old 1 May 2014, 15:19 (Ref:3400392)   #6291
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We get a chance to see details of the Audi R18 front-end with half of the front train disassembled:

(source: Laurent Chauveau - endurance-info.com)
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Old 1 May 2014, 15:51 (Ref:3400415)   #6292
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Few pics of the Audi R18 e-tron quattro LM-spec in its race livery:



These bulges at the trailing end of the mandatory cut-outs on the inner side of the front wheel fenders are quite interesting. These appear to orient and feed air directly behind the front wheels as this was already apparent on the studio shot and the Monza pictures:


I wonder how much of an influence this may have in terms of aerodynamic efficiency, especially compared to the alternate solution with the mandatory cut-outs on top of the fenders.
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Old 1 May 2014, 15:51 (Ref:3400416)   #6293
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Is it because of the shot angle that the LM-spec nose is a bit wider than the #1 Audi? Since the mandatory front wheel cutout inside the side pod leads to the absence of a second pair of winglet on both sides of the nose.
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Old 1 May 2014, 16:14 (Ref:3400428)   #6294
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The "flaps" on the sides of the nosebox are closed off, while in the sprint version they're opened up.

Also, I wondered what the black dots were near the Michelin stickers on the nose, and according to the panullo blog, they're screws to adjust the angle of the front flaps. It seems that while Audi aren't using the adjustable front diffuser flap the same way as on the early R15, the front fender/nose box flaps, at least the front ones, are adjustable.

This LM R18 reminds me of the Peugeot 905 evo2, AKA "Supercopter"
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Old 1 May 2014, 16:19 (Ref:3400432)   #6295
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And I still can't tell if the R18 is running torsion bar springs, though considering the nose packaging, they likely are, though changing them can't be the easiest thing considering said packaging.
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Old 1 May 2014, 20:38 (Ref:3400522)   #6296
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That doesnt seem like a low drag solution with openings on the inside of the front fenders. Feeding air to the front tire exits maybe reduces lift in that area?
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Old 2 May 2014, 07:02 (Ref:3400605)   #6297
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That doesnt seem like a low drag solution with openings on the inside of the front fenders. Feeding air to the front tire exits maybe reduces lift in that area?
Evidently, both cut-out options have different impacts in terms of aero efficiency and it would be very interesting to have some comparative analysis between the two concepts (that's for the guys at racecar-engineering ).

There must be a good reason for Audi to switch to the inner-located cut-out option on their LM-spec package and the bulges at the trailing end of the cut-outs, although counter-intuitive as they increase the front face area, may be an attempt to exploit the cut-outs to achieve some aero benefit.

Could this help to tidy the air flow behind the front wheels and thereby improve the efficiency of the rear wing ?
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Old 2 May 2014, 07:22 (Ref:3400611)   #6298
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I was thinking of relieving the air pressure from the standard holes is a reason for flowing it into an exit. But seems more draggy than a top of the fender hole. Possibly benefits for either position!
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Old 2 May 2014, 14:06 (Ref:3400771)   #6299
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Nice shots by Laurent Chauveau (endurance-info.com) allowing a comparison between the two aero packages run by Audi:

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Old 2 May 2014, 14:23 (Ref:3400786)   #6300
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Interesting indeed, thanks for posting
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