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Old 9 Jun 2010, 23:30 (Ref:2707889)   #451
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Originally Posted by JAG View Post
I don't believe closed cars have had a restrictor advantage for a season or two, so no change there.

As for coupes competitiveness, the 4 year old 908 is still bang on the pace.
Wasn't there some type of requirement for Air Conditioning in closed cars and a restrictor break to go with it? I know there was a year in which GT1s could use AC and get a restrictor break and then the next year they all had to have it so maybe something similar gave the closed P1s a break over the open cars.

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Old 10 Jun 2010, 07:47 (Ref:2708027)   #452
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http://www.mulsannescorner.com/RCELeMans2010.html has an update on the 2011 regulations. The sharkfin is really coming. Compared to the current regulations diesel gets a relatively smaller fuel tank: 13% smaller than petrol (65 vs 75 liter) instead of 10% smaller (81 vs 90 liter).

A lot of cost control in LMP2: homologated gearbox and diff, price cap for chassis and engine, only one bodywork configuration, ...

On Radio Le Mans George Howard Chappell of Aston Martin said that the regulations explicitely state that the engine power will be measured and balanced. I don't see this mentioned on Mike's website.
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Old 10 Jun 2010, 08:57 (Ref:2708075)   #453
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AUTOSPORT says closed prototypes could disappear from the scene because of the regularies concerning the air-conditioning for 2011:

http://www.racer.com/new-le-mans-rul...rticle/152328/

"LMP1 and LMP2 coupes are afforded larger diameter air restrictors than their open top counterparts because they are forced to run air conditioning. This reflects the fact that an air-con system saps engine power." (and this is planned to be abolished by ACO).

I think this is Dr. Ulrich´s lobbying, as a tit for tat against Peugeot and to create an advantage for Audi. I am disappointed the ACO plays along.

Admittedly, Peugeot has run on equal terms in the LMS, but the real problem is that a closed LMP needs much more work than an open one-additional weight because of the doors, windscreen cleaning, driver exchange and of course the cooling issue. I think it would be fair to adjust these disadvantages with slightly increased power. Otherwise there would be no incentive for the constructors to build them.

So the closed LMP should be conveyed, not only because many spectators like them but also in safety terms: Alboreto died in an open car and what happened if Dumbreck would have sat in an open one?
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Old 10 Jun 2010, 09:37 (Ref:2708093)   #454
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AUTOSPORT says closed prototypes could disappear from the scene because of the regularies concerning the air-conditioning for 2011:

http://www.racer.com/new-le-mans-rul...rticle/152328/
That is a very old article. I totally agree with Mike on this:
Quote:
Aston Martin's George Howard-Chappell is doing what he does best, whinging. An article on Autosport.com quotes Howard-Chappell as signaling the death knell for coupes at Le Mans with the elimination of the increased inlet air restrictor diameter alloted to the closed top cars. "There will be no incentive to do a closed car, and you need that because a coupe is more work." That said, Howard-Chappell seems to impishly add, "There is a small aerodynamic advantage in running a closed car," only to hammer in, "but there are so many negatives." Woe is me. Let's say the "small" aerodynamic advantage is on the order of 5% increased L/D, this would equate to about a 50 lb. drag reduction, or conversely, a 200 lb. increase in downforce. Just in looking at the drag figures, you're looking at a 3 mph advantage in straight line. So with that said, I'm sure the "disadvantages" of engineering doors, a windscreen wiper and defogging system, as well as the additional weight higher up (so many disadvantages after all) is well worth the aerodynamic advantage for just showing up with a roof on the car.
source: http://www.mulsannescorner.com/newssept09.html

Just compare the lap times of Audi and Peugeot last night. Both have similar top speed on the straights, but the Peugeot is so much quicker in the corners. So for the same drag, a coupe can run with more downforce than an open car.

You list driver changes as a disadvantages for coupes. There is no longer a handicap for coupes since ACO introduced the one air gun rule. In fact, you could argue that that rule was introduced thanks to lobbying by Peugeot
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Old 10 Jun 2010, 10:38 (Ref:2708126)   #455
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A bit of news about Le Mans 2011, unrelated to the LMP rule changes:
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Old 10 Jun 2010, 10:43 (Ref:2708131)   #456
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Spyderman should be qualifying in the top 3 on the gridSpyderman should be qualifying in the top 3 on the gridSpyderman should be qualifying in the top 3 on the gridSpyderman should be qualifying in the top 3 on the grid
I like it!

Do you have any details on the Hybrid rules? Any changes?
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Old 10 Jun 2010, 10:45 (Ref:2708135)   #457
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The official press release has all the details: http://www.lemans.org/en/news/2011-L...TIONS_628.html

The ACO has seen the light: there is a one year transition period.
Quote:
The 2011 regulations for the Le Mans 24 Hours, the ILMC, ALMS, LMS and the Asian Le Mans series have been revised to take into account the current economic situation and ensure a transition period. It gives the 2010 LM P1 prototypes an extra year with their performance adjusted in relation to the new 2011 cars. The development of the current chassis will be frozen on 31/12/2010.

...

The current LM P2s can, still race in 2011 on 3 conditions :
1. Installation a of a new engine derived from series production.
2. Chassis development frozen on 31/12/2010.
3. Performance adjusted in relation to the new 2011 models.

Last edited by gwyllion; 10 Jun 2010 at 10:52.
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Old 10 Jun 2010, 10:48 (Ref:2708139)   #458
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Spyderman should be qualifying in the top 3 on the gridSpyderman should be qualifying in the top 3 on the gridSpyderman should be qualifying in the top 3 on the gridSpyderman should be qualifying in the top 3 on the grid
Thanks!
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Old 10 Jun 2010, 12:10 (Ref:2708186)   #459
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Analysis of the announcement: http://www.endurance-info.com/versio...ance-4614.html
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Old 10 Jun 2010, 12:18 (Ref:2708195)   #460
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Yay, so this is not the last year of the screaming V12s!
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Old 10 Jun 2010, 12:26 (Ref:2708203)   #461
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Yay, so this is not the last year of the screaming V12s!
The press release has this vague sentence:
Quote:
2010 LM P1's eligible in 2011 provided that as announced two years ago, the cubic capacity of the LM P1 prototypes will be reduced.
I think this means no more Aston Martin V12. Aston Martin already said they plan to be build a new car.
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Old 10 Jun 2010, 12:30 (Ref:2708208)   #462
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The press release has this vague sentence:
I think this means no more Aston Martin V12. Aston Martin already said they plan to be build a new car.
The car might still run as a privateer entry, because they said the following:

Quote:
It gives the 2010 LM P1 prototypes an extra year with their performance adjusted in relation to the new 2011 cars
So restrictors and weight are used to equalize them to the new P1s, but that means that 2010 P1s, frozen in development at the end of the year, can run in 2011.
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Old 10 Jun 2010, 12:35 (Ref:2708215)   #463
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Okay, http://www.endurance-info.com/versio...ance-4614.html suggests something different:
Quote:
La grande surprise, c’est l’acceptation des LMP1 2010 aux côtés des LMP1 2011. Comme annoncé ultérieurement, ces protos verront la puissance et la cylindrée de leur moteur réduites. Les LMP1 2010, châssis plus moteur, seront donc acceptés. Un ajustement des performances sera effectué par rapports au package 2011. Un choix qui peut se comprendre économiquement parlant et qui devrait satisfaire des constructeurs comme Aston Martin ou Zytek.
translated:
Quote:
The big surprise is the acceptance of LMP1 2010 alongside LMP1 2011. As reported later, these prototypes will have the power and capacity of their engine reduced. The LMP1 2010 car, chassis plus engine, will therefore be accepted. Their performance will be balanced to the 2011 package. A choice that can be understood economically and should meet manufacturers like Aston Martin or Zytek.
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Old 10 Jun 2010, 12:39 (Ref:2708220)   #464
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What I understand from that one is that the 2011 P1s are the ones with power and engine capacity reduced, since we know that 3.4/2 l engines will be mandated for the new breed of cars.

But anyway, it's a statement from the French, so there's room for a lot of interpretation.
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Old 10 Jun 2010, 12:40 (Ref:2708225)   #465
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So restrictors and weight are used to equalize them to the new P1s, but that means that 2010 P1s, frozen in development at the end of the year, can run in 2011.
I am not sure how they will slow down the Aston Martin Lola which has an engine with around 700 bhp to target power level of 520 bhp That will be a huge restrictor cut or a lot of ballast weight

It will be a mess to match petrol, petrol turbo and diesel engines of 2010 with the petrol, petrol turbo and diesel engines with or without hybrid of 2011.
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