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24 Apr 2011, 19:29 (Ref:2869181) | #1301 | ||
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They seem to have closed the bodywork around the engine bay (http://endurance-info.com/version2/g...y24_04_055.jpg ), unlike some photos seen before from Sebring.
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24 Apr 2011, 19:40 (Ref:2869193) | #1302 | ||
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Sebring was also much warmer than Le Mans. The Pugs if I remember correctly ran with at least one side of the 908's pod vents closed off.
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24 Apr 2011, 20:16 (Ref:2869221) | #1303 | ||
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Its been speculated to death that the Audi has 1 large turbo(with perhaps 2 turbines). That would be the only concievable reason to have 1 exhaust pipe. The back pressure of only having 1 exhaust pipe would cost them horsepower |
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24 Apr 2011, 21:18 (Ref:2869269) | #1304 | ||
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I wonder whether the ACO will react to extensive smoke of the R18. It was very clear on the Sebring test video and there are reports that it was also visible during the Le Mans test day. Last year the ACO did not care: http://www.racecar-engineering.com/a...s-all-illegal/ Clearly, it does not help for the Audi's "TDI clean diesel" marketing campaign. |
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24 Apr 2011, 21:31 (Ref:2869277) | #1305 | ||
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Of course, there are those who'll argue that a "polluting" race car is cleaner and more economical than most road cars, as a lot of the stuff on the road car engines sap power and effency as far as the pollution controls. Even at that, GT3 cars and Super GT cars have to run catalyic converters (broadly what a particle filter is).
If the Pugs start to smoke (which some say that they turned up the wick in session two to match the Audi times), look for the ACO to turn a blind eye. It should be noted that the R15s at Sebring were smoking big time at low speeds (far worse than the R18s), and no one cared there. Either it's the deal with one filter, or Audi were running rich, or when the engine isn't being pushed, the one filter is enough, but the back pressure from the turbo/turbos/compound turbo (whatever Audi has!) is blowing all the soot out that's normally collected when the engine is on wide open throttle on accelleration. But then again, the thing on the R18's exhaust that's about the size of a muffler should be the particle filter, right? PS: AMR have no room to complain this year, since the ARM-One seemed to smoke worse than anything out there by munching it's own cylinder liners. |
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24 Apr 2011, 21:35 (Ref:2869280) | #1306 | |
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Kristensen mentioned in the press conference that today they ran with air conditioning and that they probably will not need it in June (depending on the temperature conditions).
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25 Apr 2011, 14:01 (Ref:2869535) | #1307 | |
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You have to give Audi credit for their attention to detail. Look at the drink bottle system of the R18: http://www.fourtitude.com/gallery/al...ssions/030.jpg
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25 Apr 2011, 14:18 (Ref:2869540) | #1308 | |||
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25 Apr 2011, 14:53 (Ref:2869560) | #1309 | |||
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Interesting in that Audi said that they didn't think that they needed the AC system in their pre-test press release, as it wasn't very hot (at least by standards where I live come summer) for the test day (they had the rear deck vents closed off that were added before the March Sebring test). At least they know that it'll work if needed for LM. And I wonder if it's a lightweight system like most everything else on the car and how it's packaged. |
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25 Apr 2011, 18:15 (Ref:2869658) | #1310 | |||
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25 Apr 2011, 20:03 (Ref:2869719) | #1311 | ||
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That is and extreme take on Water system .
I wonder this is because of Tom K, Dindo and Allans experince with the very hot Bentley |
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25 Apr 2011, 20:28 (Ref:2869734) | #1312 | ||
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Allan never drove the Bentley (though he drove the Toyota GT-One in 1999). Guy Smith is the other guy you're looking for there, and I do think that the Dyson Lola has a similar fitting.
The Audi R8 and R10 originally had a provision for a water dispenser, but it was dropped to save weight and replaced with the driver being given water bottled during pit stops. I think that the closed cockpit (ie, space issues) and the R18s' being well below the 900kg minimum weight minus ballast brought the drink dispenser back. |
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25 Apr 2011, 20:40 (Ref:2869739) | #1313 | |||
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Hvil i Fred Allan. (Rest in Peace Allan) |
26 Apr 2011, 06:21 (Ref:2869843) | #1314 | ||
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26 Apr 2011, 13:47 (Ref:2870013) | #1315 | ||
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26 Apr 2011, 14:56 (Ref:2870050) | #1316 | |
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I found this interview with TK that was taken before the test day on Saturday. At the end of the interview he very confidently predicted sub 3:30 lap times.
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26 Apr 2011, 15:07 (Ref:2870051) | #1317 | ||
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Audi released a ton of photos of the R18 yesterday post test:
http://www.fourtitude.com/gallery/ga...Le%20Mans/2011 No shots of the engine or gearbox, obviously, but it does have the first detailed shots of the interior of the cockpit, and a size comparison between a R15 and an A6. |
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26 Apr 2011, 15:15 (Ref:2870054) | #1318 | |
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Even though Audi said before the test day that the R18 does not need air conditionig, there is an AC switch on the dash: http://www.fourtitude.com/gallery/al...etails/002.jpg
BTW there is a switch label "ignition", which is a bit funny because a diesel engine does not have spark plugs Last edited by gwyllion; 26 Apr 2011 at 15:21. |
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26 Apr 2011, 15:38 (Ref:2870071) | #1319 | |
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I look around, but I was unable to find any pictures of the car without the engine cover, except the blurry picture on http://www.racecar-engineering.com/cars/audi-r18-tdi/.
The front suspension was also covered with a blanket: http://pitlane-vision.com/images/sto....04/3/2/13.jpg http://www.ultimatecarpage.com/image...2011/24771.jpg On the other hand, Peugeot and AMR did not bother to hide the front: http://www.ultimatecarpage.com/image...2011/24783.jpg http://www.ultimatecarpage.com/image...2011/24673.jpg http://www.ultimatecarpage.com/image...2011/24780.jpg |
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26 Apr 2011, 15:47 (Ref:2870078) | #1320 | ||
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They used the AC for the test day but think it wont be needed come June.
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26 Apr 2011, 15:56 (Ref:2870084) | #1321 | ||
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26 Apr 2011, 17:11 (Ref:2870117) | #1322 | ||
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THEY think they wont need it, not I think they wont need it. Sorry for the possible confusion...
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26 Apr 2011, 17:13 (Ref:2870119) | #1323 | |||
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And it goes back to the Audi test photo from Sebring where they used one of R18s to block the other while the front end was being worked on. But it's pretty easy to guess that the R18's suspension, at least at the front, is a toned down version of the R15's modified for more grip/lower CG and to suit the wider front tires. The rear is a bit more of a mystery, but also looks conventional, sort of like the old 908's. |
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26 Apr 2011, 17:49 (Ref:2870133) | #1324 | ||
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26 Apr 2011, 19:29 (Ref:2870199) | #1325 | ||
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hi folks, interesting article of race care engineering, but from what I hear when the car acellerates from the pits I have reason to believe the new Audi V6 is a single turbo engine, also the turbo shroud looks like a single turbo in the partial engine image....... it has about 2 seconds of turbo lag when acellerating from idle in the pits at sebring, whereby the engine revs up then the turbo spools up with a niticable whizz 2 seconds later......
anyway........did anyone notice what the general smoke levels were when the R18 was running at the lemans test????......at sebring it was smoking quite noticably.......I notice an image showing the pugs were smoking a touch on the lemans test.......I also hear the R18 is belching a big chuff of black smoke when acellerating away from the lemans pits - just like sebring........I'm really interested to see what the ACO do if this happens in qualifying or the race, last year they turned a blind eye, but I cant imagine thats going to be acceptable for long as it blatantly breaks the rule of no visible exhaust fumes allowed. |
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