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11 Jun 2010, 04:41 (Ref:2708874) | #501 | ||
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Adjustable/movable aero, not gonna happen.
L.P. |
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11 Jun 2010, 05:15 (Ref:2708885) | #502 | ||
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Already happened in F1-since 2009, F1 cars have run adjustable front wings(after the FIA inisited that no movable areo devices were permitted on such cars for 30 years), and it's proposed that the rear wings may be adjustable on the 2011 F1 cars.
But do we need this on sportscars? I don't think so. The Peugeot 908's J-damper(pirated from McLaren and Ferrari) and the rised noses sans brake ducting are enough for me. |
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11 Jun 2010, 05:29 (Ref:2708887) | #503 | ||
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Jets have movable aero also! But we were talking about ACO Le Mans Sportscars.
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11 Jun 2010, 07:29 (Ref:2708912) | #504 | ||||
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Quote:
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In fact, Bruno Famin said the following in this interview: Quote:
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11 Jun 2010, 13:55 (Ref:2709183) | #505 | |
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It looks like petrol turbo engines will be 2.6l capacity now.
That spec looks a lot more punchy and solid for a 24hr engine than the 2l turbo or 3.4l V8. http://www.motorsport.com/news/artic...FS=ALMS-LEMANS Edit, presumably HPD are building P1 and P2 engines? http://auto-racing.speedtv.com/artic...gine-for-2011/ Last edited by JAG; 11 Jun 2010 at 14:17. |
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11 Jun 2010, 14:34 (Ref:2709207) | #506 | |
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Somehow I didn't notice when I read it the first time that the Speed article says HPD is building a 2.8L twin turbo as an LMP2 engine. Does anybody have a link to the full release of the tech regs for the 2011 race? Tried looking on lemans.org but couldn't find them where I used to. Seems to fit the idea of the LMP2 street based engines since they can build it up from the V6 out of the Accord and Acuras but is 2.8 too large for a turbo LMP2?
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11 Jun 2010, 17:51 (Ref:2709353) | #507 | ||
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Does the above mean the KERS system is intergrated with the engine so you can use it for extra performance or improved MPG? When the ACO talked of only using KERS to improve MPG it seems they were refering to disallowing push-to-pass. When the KERS system is intergrated with the engine you can use it for extra performance or improved MPG. Last edited by JAG; 11 Jun 2010 at 18:14. |
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11 Jun 2010, 17:55 (Ref:2709356) | #508 | ||
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11 Jun 2010, 18:39 (Ref:2709384) | #509 | |||
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11 Jun 2010, 18:44 (Ref:2709387) | #510 | |||
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Nah, we will see the rules before then. Whatever they build I would suspect it to be to the capacity of its configuration by rule. L.P. |
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11 Jun 2010, 19:33 (Ref:2709411) | #511 | |||
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11 Jun 2010, 19:50 (Ref:2709417) | #512 | ||
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There definitely is some confusion going on here. There seem to be 2 seperate V-6s in the works here. A 2.6L TT for P-1 (with room for a kers unit?) in parallel with the INDY engine. For P-2 a 2.8L (TT?) based on their global production engine.
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11 Jun 2010, 19:53 (Ref:2709420) | #513 | |
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I don't believe that. The displacement for turbocharged LMP1 2011 is limited to 2 liters!
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11 Jun 2010, 19:56 (Ref:2709422) | #514 | ||
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Maybe there's a draft unknown to us (the public) which would allow for slightly larger displacements? The regulations aren't fully finalized, we know that. And with a bit of lobbying from interested manufacturers...
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11 Jun 2010, 20:02 (Ref:2709425) | #515 | ||
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11 Jun 2010, 20:32 (Ref:2709441) | #516 | ||
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11 Jun 2010, 20:55 (Ref:2709451) | #517 | |
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And both articles, probably referencing the same press release, have said the engine was developed in connection with the ACO. Could they be opening the turbo capacity to make a more durable engine for P2s. As Dyson has shown, the 2.0 turbos aren't the most durable units for one race never mind the 30 hours, 3500 miles the articles quote as being their target endurance.
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11 Jun 2010, 23:38 (Ref:2709523) | #518 | |
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IRL formula for 2012 is 2.4 liter V6s (turbo). Honda motor is 2.8 and geared for P2 (capacity max there being 3.2). I think Ingram said it shared nothing with the Honda IRL motor? Future motor or current? Who knows...I'm confused too because then there's the Global Racing Engine and the Honda release mentions its based upon Honda's global V6..."global" as in GRE or some production derived fleet engine used throughout Honda and Acura?
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12 Jun 2010, 00:22 (Ref:2709532) | #519 | |
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I think their global refers to its internal use across their line-up of street cars, Honda offers 5 and Acura has 4 all seemingly using a 3.5-3.7L V6 in their US lineup. I also thought I had read in an article that the IRL and LMP engines had nothing in common and were independently developed.
Have you seen any of the engine specs for each of the classes for 2011? I figured if anybody here has a line to an ACO released draft, it would be you Mike. I couldn't find anything on the aco's site myself. |
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12 Jun 2010, 01:08 (Ref:2709540) | #520 | |
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If someone can track it down there was an article a few months back in which HPD claimed to be working with the ACO on P1/P2 engines proposal that complimented their road cars and other motorsport programs.
My interpretation was these engines may not neccessarily fall within the then known ACO P1/P2 specs. Presumably the 2.6l Turbo P1 engine was one of these proposals? This engine is given more credence as Highcroft talk about a 2011 P1 Le Mans program and advises HPD to fit KERS, a technology that is currently only allowed in P1. Last edited by JAG; 12 Jun 2010 at 01:14. |
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12 Jun 2010, 03:20 (Ref:2709560) | #521 | ||
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12 Jun 2010, 03:30 (Ref:2709562) | #522 | ||
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http://www.mulsannescorner.com/2011ACOVersion4.jpg Last edited by MulsanneMike; 12 Jun 2010 at 03:37. |
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12 Jun 2010, 05:28 (Ref:2709570) | #523 | ||
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I can already see this thing having bigger engines in P2, as it looks right now anyway, backfiring in terms of NOT producing the relative pace of P1 and P2 that the ACO is looking for. Looks like P675/P2 haven't hammered the message home.
I also did some basic calculations. Based on the power figures for current, top P2s that have been discussed (figures that are somewhat higher than the official numbers), unless drag is significantly reduced, the power drop from ~575hp down to the proposed 420hp drops practical top speed for P2s from 291km/h (fastest I've seen for any P2 car this year) down to 249km/h. And we think the GT2 guys have something to complain about with the current class structure. Also, without significant drag reductions, if P1s drop from a maximum of ~750hp down to the proposed 520hp level, their top-end speed would drop from 348km/h down to 290km/h. With the new P2s at 900kg, but with these amended engine capacity rules, they should just leave P1 alone the way things appear to stand now. |
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12 Jun 2010, 06:01 (Ref:2709574) | #524 | ||
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12 Jun 2010, 06:45 (Ref:2709585) | #525 | ||
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George Howard-Chappell on the new rules: http://www.endurance-info.com/versio...ance-4636.html
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