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Old 16 Jan 2018, 07:02 (Ref:3793046)   #5401
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Originally Posted by Chiana View Post
They go WAY off the mark also in the exit of the first chicane, sometimes all four wheels. That's the absolute worst besides those two above.
That piece of tarmac on the exit of the first chicane has been there since the chicanes came in, cars have been using that for years before other track changes. Same for the exit of the second chicane.
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Old 16 Jan 2018, 08:57 (Ref:3793054)   #5402
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is the porsche powered rebellion oreca lmp1 rumor still alive? or has gibson definetively been confirmed at the end?
Nothing has been confirmed. The Porsche link was made by just one journalist/photographer who was present at the end of season party, but no other media source has openly made that link, so it seems somewhat tenuous. Bart has maintained throughout that their preference would be for a normally aspirated engine, so the Gibson engine does seem most likely. But, it does seem a little strange that there has been no announcement. There's the Zenvo link, so maybe that engine is further down the line than we realise. Who knows...
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Old 16 Jan 2018, 09:54 (Ref:3793066)   #5403
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Originally Posted by Bentley03 View Post
Nothing has been confirmed. The Porsche link was made by just one journalist/photographer who was present at the end of season party, but no other media source has openly made that link, so it seems somewhat tenuous. Bart has maintained throughout that their preference would be for a normally aspirated engine, so the Gibson engine does seem most likely. But, it does seem a little strange that there has been no announcement. There's the Zenvo link, so maybe that engine is further down the line than we realise. Who knows...
Or, thinking way outside the box (and at the risk of ridicule), run the cars with different engines.
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Old 16 Jan 2018, 11:30 (Ref:3793082)   #5404
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Originally Posted by tomerswayler View Post
The changes mentioned for the fuel flow and consumption should bring the Toyotas and Privateer very close together. The 2017 figures are from https://www.fia.com/file/58905/downl...token=eNkmOZrc

Let's see:
LMP1H 8MJ
2017 878kg___124,9MJ/lap fuel___80,2kg/h fuel___44,1kg/stint fuel
2018 878kg___124,9MJ/lap fuel___80,2kg/h fuel___35,2kg/stint fuel

LMP1
2017 833kg___157,2MJ/lap fuel___100,9kg/h fuel___53,0kg/stint fuel
2018 833kg___210,9MJ/lap fuel___110,0kg/h fuel___52,9kg/stint fuel


The LMP1H will see a drop in the average stint length as the fuel per stint decreases by 20%. A normal stint will be 10 or 11 laps instead of 13 laps, so LMP1H and LMP1 could be forced on the same stint lengths/strategy.

The LMP1 class gets 34% more fuel per lap and will have 9% more power. Is that a jump in power (and laptime) similar to what LMP2 did from 2016 to 2017? LMP2 improved the laptime from a 3:36 to a 3:25.

The best ByKolles did a 3:24 in 2017, the best LMP1H was 3:14.

Looks like it'll be a close competition!
There is one thing I'missed out completely - Energy per lap. The difference seems really high, this means a lot more dangerous coasting for hybrids.

Lets evaluate the difference including 8 MJ of hybrid energy:
Hybrid: 124,9 MJ burned with 43% efficiency = 53,7MJ + 8 MJ = ~62MJ/lap kinetic energy
Non-Hybrid: 210 * 0.43 = 90 MJ/lap kinetic energy

Non-hybrid will have 45% more kinetic energy to work with.

This is not normal to me, non-hybrids will be burning gas till the end of the straight with very late braking, hybrids will boost out of the corner faster but will be saving fuel at high speed.

This will most certainly make races interesting with multiple overtaking in one lap, but IMO this very dangerous, we have seen multiple collisions between LMP1 and LPM2 because of this fact, making non-hybrid even faster this will be even more dangerous for LMP1H.
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Old 16 Jan 2018, 15:16 (Ref:3793116)   #5405
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I do think that we're missing out on the possibility of Rebellion (or someone else) running the Judd V10, now that they're available again, and Rebellion used to be a Judd customer in both LMP1 and LMP2.

I also know that because of how fast the LMP2 cars got at Le Mans and with them still being air restricted (no lift and coast), there were concerns on top end between them and LMP1s. But in spite of that, there were few incidents (though the #9 Toyota at LM was an infamous one).

However, the LMP1 privateers are supposed to have more power, but I'm sure that if the ACO determine it to be a hazard, they can go back and make changes.
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