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Old 18 Jul 2017, 19:24 (Ref:3752549)   #5001
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And in road cars. I'm afraid it's more to do with the inherent advantage it has.
As am I, but several people have mentioned that there are some technologies that are banned that could help make NA engines more viable if allowed. I'm not sure if that's the case though, I don't know enough about it.
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Old 18 Jul 2017, 19:30 (Ref:3752554)   #5002
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I'm not sure what that could be. Certainly nothing that couldn't also be applied to a turbo engine too.
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Old 18 Jul 2017, 20:54 (Ref:3752593)   #5003
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I'm not sure what that could be. Certainly nothing that couldn't also be applied to a turbo engine too.
VVT, cylinder deactivation(?) are a couple things that aren't allowed iirc.
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Old 18 Jul 2017, 21:06 (Ref:3752600)   #5004
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The air hybrid that Audi were working on that Peugeot is also looking at for road car use. But for as much as the rules makers talk about road relevance, there's a lot of technology they've banned or flat out ignored. GM even put's VVT on pushrod engines for pete's sake!
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Old 18 Jul 2017, 21:28 (Ref:3752608)   #5005
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Well, in fact all the engine technology, used in WEC is not road relevant. The ICE are built around pre chamber ignition and using Lambda numbers of 1,5-1,8. Thats never gonna happen in a road car, because with this high L-numbers it's impossible to use a catalyst and you need a catalyst in order to deal with all the NO and CH...

The diesel burning process of the R18 was also not really road relevant, given his burning process, but thats the same for F1 engines. In fact it will be really interesting how AMG will handle their AMG One Hypercar in terms of exhausts...
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Old 18 Jul 2017, 21:40 (Ref:3752614)   #5006
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I'd like to see the fuel flow limits go away in both LMP1 and F1. Teams can still run the flow meters, but not for performance balancing. I think that LMP2s use something similar to the fuel flow meters to calculate estimates for fuel mileage. But I don't think they should be used for BOP or speed limiting purposes.

I think going back to air restrictors and allowing more freedom with engine layouts and hybrids would help a lot with variety in the class, and keep cost reasonable. Also restricting teams to one main bodykit that they can modify for LM or sprint races (again, think LMP900 or first generation LMP1) would also help.

I'd also like to see more emphasis on low emissions/renewable fuels, because I don't think we'll see a lot of high performance electric cars on the roads anytime soon, let alone electric cars that can go as fast as the current cars can for a whole 45-50+ minute stint, let alone be recharged in the time it takes to refuel a current car. Hence why most EV cars right now are hybrids that can go a certain distance before the engine has to kick in as a generator/main powertrain.
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Old 18 Jul 2017, 23:35 (Ref:3752637)   #5007
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Well, in fact all the engine technology, used in WEC is not road relevant. The ICE are built around pre chamber ignition and using Lambda numbers of 1,5-1,8. Thats never gonna happen in a road car, because with this high L-numbers it's impossible to use a catalyst and you need a catalyst in order to deal with all the NO and CH...

The diesel burning process of the R18 was also not really road relevant, given his burning process, but thats the same for F1 engines. In fact it will be really interesting how AMG will handle their AMG One Hypercar in terms of exhausts...
What if a simulation tool developed for combustion dynamics for an LMP1 engine was later used to develop and improve a road car engine. Or what if you hired an exceptional engineer to work on the LMP1 program engine, and then the program shutters, and he goes to work for the road car division (*cough* Audi *cough*)

The ways in which technology and expertise transfers to the road from these motorsports programs is sometimes direct, and other times more abstract.

Think about Honda F1 for example. The engines and power units do not fail on the dyno, but they fail on the track. They are going to learn something fundamental there, and it will perhaps find it's way back into the road vehicle development.
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Old 18 Jul 2017, 23:39 (Ref:3752639)   #5008
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Well that Juttner WEC quote in the other thread sure is worrying.
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Old 19 Jul 2017, 00:18 (Ref:3752645)   #5009
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The rules have been skewed towards turbocharging ever since there's been turbocharging. NA cars have won Le Mans overall only 7 times since 1976 and last in 1999, and that includes 3 of the biggest fluke wins in the history of the race (Rondeau, Mazda, and McLaren) and 2 3.5L Group C years. Only Jaguar and BMW really beat turbo cars head to head.

Basically the only competitive NA option for endurance racing was a huge V12 so you didn't have to rev it hard or have a lot of vibration, and those are way too bulky in a modern car. 3-4L NA V8s were ideal from a chassis design and power delivery standpoint and some of those cars were super fast in sprint races on smaller tracks but they were rarely a factor in longer races. With the WEC schedule they wouldn't be as popular even under the old rules.
A normally aspirated car came awfully​ close this year, just not in P1.
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Old 19 Jul 2017, 03:09 (Ref:3752677)   #5010
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Well that Juttner WEC quote in the other thread sure is worrying.
Only for people who read it wrong
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Old 19 Jul 2017, 15:26 (Ref:3752816)   #5011
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And in road cars. I'm afraid it's more to do with the inherent advantage it has.
However those "advantages" are decided upon in terms of the ruleset which the teams work to. Someone out there in the powers-that-be decides, "ok well, we are going to give the turbo cars 1.4bar of turbo pressure". This is where the advantage comes from surely, or at least part of it? If they had a 500bhp turbo car and a 500bhp NA car, things would be about equal, if you disregard things like weight distribution and chassis dynamics. Of course you have the engine torque to work into the equation, so really, a 500bhp NA and turbo wouldnt be equal, you would have to work that into the rules, so that a NA engine was 500bhp, but the turbo was 470bhp, or something to that effect.
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Old 19 Jul 2017, 15:42 (Ref:3752820)   #5012
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Well that Juttner WEC quote in the other thread sure is worrying.
The translation is a bit confusing: in this context he meant Joest can't partner with Toyota or Porsche.
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Old 19 Jul 2017, 17:16 (Ref:3752836)   #5013
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However those "advantages" are decided upon in terms of the ruleset which the teams work to. Someone out there in the powers-that-be decides, "ok well, we are going to give the turbo cars 1.4bar of turbo pressure". This is where the advantage comes from surely, or at least part of it? If they had a 500bhp turbo car and a 500bhp NA car, things would be about equal, if you disregard things like weight distribution and chassis dynamics. Of course you have the engine torque to work into the equation, so really, a 500bhp NA and turbo wouldnt be equal, you would have to work that into the rules, so that a NA engine was 500bhp, but the turbo was 470bhp, or something to that effect.
Too complicated. Open rules work the best, even if in the end it converges.
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Old 22 Jul 2017, 11:40 (Ref:3753505)   #5014
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http://sportscar365.com/lemans/wec/v...c-cars-of-era/

Vasselon said we should see “competitive” speeds, likely equivalent to LMP2 cars, on the electric stretch.

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Old 22 Jul 2017, 16:26 (Ref:3753540)   #5015
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They need to be faster than lmp2. We saw what happened with Lapierre. Thinking he was clear of the p2?
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Old 23 Jul 2017, 02:13 (Ref:3753670)   #5016
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IMO it's useless tinkering anyway. Guess they had to come up with something new.
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Old 24 Jul 2017, 19:27 (Ref:3754043)   #5017
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IMO it's useless tinkering anyway. Guess they had to come up with something new.
To be fair, it's a rule that's likely there because someone asked for it, or something like it...
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Old 24 Jul 2017, 20:10 (Ref:3754066)   #5018
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They need to be faster than lmp2. We saw what happened with Lapierre. Thinking he was clear of the p2?
Or don't turn into a car that is alongside? Maybe the LMP1 driver could behave like they want the other divers to behave for a few corners?

I'm not having a dig at Lapierre I'm just saying it should already part of a driver's skill set.
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Old 24 Jul 2017, 20:34 (Ref:3754077)   #5019
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If LMP3 and GTE Am drivers can cope with cars being similar speed, the ultra super duper platinums should cope just fine.
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Old 24 Jul 2017, 20:39 (Ref:3754081)   #5020
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If LMP3 and GTE Am drivers can cope with cars being similar speed, the ultra super duper platinums should cope just fine.
The difference is that LMP3 and GTE in similar speed every lap. So when a driver sees a car he knows what speed it is going go instead of suddenly going slower still in normal racing line.
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Old 24 Jul 2017, 21:02 (Ref:3754089)   #5021
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This is the case and now we have another small facet to test the drivers and teams. I don't think it is overly dangerous, certainly no more than many other aspects of the sport. Like, say, that LMP3 (or 2) or GTE car having a slower driver in it compared to the others.

Perhaps we could help them by having a light on the rear, similar to the hybrid recovery light on F1 cars. Of course it will be for 1km after pit exit and if you start catching an LMP1 it'll be a clue.
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Old 24 Jul 2017, 21:06 (Ref:3754093)   #5022
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I believe the LMP1-H cars already use the hybrid recovery lights on the rear.

I really don't see this as an issue. We've had GTE and old generation Mini Coppers around the Ring. We've had Group C on track with Ford Escorts. I don't see the problem with drivers having to cope with different speeds of cars.
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Old 24 Jul 2017, 21:10 (Ref:3754095)   #5023
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I believe the LMP1-H cars already use the hybrid recovery lights on the rear.

I really don't see this as an issue. We've had GTE and old generation Mini Coppers around the Ring. We've had Group C on track with Ford Escorts. I don't see the problem with drivers having to cope with different speeds of cars.
Exactly.

Modern cars are So much safer than those as well.
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Old 24 Jul 2017, 21:47 (Ref:3754110)   #5024
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To me, it goes back to what Derek Bell said at LM in 2011: in his time, you had bigger top speed separation between the classes and, especially at LM, more straightaways to pass cars on. Now LM has the chicanes and the sweeping S section from Dunlop Bridge to the actual Esses. And there's not as huge a gap in top speed between GT cars and Prototypes. Granted, a lot of that does go all the way back 25 years ago to the start of the air restrictor days.

But we do see a lot more passes being made under braking and in cornering vs down a straight away compared to earlier times. And even then, most passes on straights happen because prototypes are lighter and accelerate quicker, and hit their top speeds earlier. IE, especially the hybrid cars, are quicker, but not necessarily faster.

No matter what, though, as long as we have humans driving cars that make judgement calls--some good, some bad--on both side of the spectrum, there will always be collisions and accidents.
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Old 25 Jul 2017, 02:55 (Ref:3754142)   #5025
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If LMP3 and GTE Am drivers can cope with cars being similar speed, the ultra super duper platinums should cope just fine.
It's not about the driver rating, because even the 'platinum' guys get it wrong, obviously. They're putting out a new rule that will make blending with traffic even more of a challenge, which is a safety issue; yet they're making the cockpits bigger to help with safety I don't care if they do electric for 10 seconds or 1 minute, it's just another rule that doesn't look all the way thought through. That's just me though.
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