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21 Feb 2018, 01:57 (Ref:3802805) | #1076 | ||
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If anyone knows something like an estimate for what Toyota's times were like, then we might get an idea of if the privateers might be competitive. Problem is I think we'll have to wait until the WEC Prologue before we get any reliable info.
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21 Feb 2018, 02:07 (Ref:3802806) | #1077 | ||
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Quote:
If Alonso wasn't there the ACO probably wouldn't care quite as much if it was some Dallara or whoever that stole pole from Toyota at Le Mans, but alas, the PR headlines are too important. |
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21 Feb 2018, 04:01 (Ref:3802813) | #1078 | ||
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Quote:
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21 Feb 2018, 04:04 (Ref:3802814) | #1079 | ||
Racer
Join Date: Feb 2013
Posts: 117
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I wonder if reactions by some concerning this bop eot discussion would be the same if Audi and Porsche where still in the game.
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21 Feb 2018, 14:40 (Ref:3802921) | #1080 | |
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Well for the record, in the last 10 years, there's only been two occasions when I've been actually for real been disappointed by balancing in LMP1 anywhere in the world. The first, 2011 ALMS (so not even actual ACO) when Dyson Lola-Mazdas received ridiculous restrictor breaks every race to make it a 'fight' against the Lola-AMR of Pickett. It was like DPi or something. The second, 2013 when Toyota moaned prior to Le Mans and was handed a late fuel break. Even though with that you can always look at the diesel situation and roll your eyes, it was still nevertheless kind of cheap.
So anyway with that, I'm not tooooooo worried they'll mess this, because the track record for the class has been great recently... they more likely won't screw it up. Not that the other categories really raise confidence but sometimes you need to have faith... |
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21 Feb 2018, 15:19 (Ref:3802931) | #1081 | ||
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Posts: 4,473
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Quote:
Because A) Audi and Porsche would have entered Hybrid cars as well and, B) their budgets would have been - and were - non comparable to this season's - and previous years' - privateers (even though SMP and Rebellion are the heavy hitters among them). |
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21 Feb 2018, 17:13 (Ref:3802966) | #1082 | |
Rookie
Join Date: Feb 2018
Posts: 41
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Here is a article of a quick overview of the LMP1 privateer Aragon Test.
http://www.dailysportscar.com/2018/0...-notebook.html "Trackside observers though have reported (track timing screens were active for the test) that the Ginetta put in an early lap in the very low 1:19s with the refettled CLM in the mid 1:19s and the BR1, now well into its test cycle, in the mid 1:17s. One source suggests that the CLM managed a lap in the 1:18s, though without a transponder fitted. Local sources in Spain suggest that the Toyotas were putting in 1:18s on long runs at their last visit to the Aragon track." |
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21 Feb 2018, 19:58 (Ref:3803003) | #1084 | |
Racer
Join Date: Feb 2018
Posts: 166
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I'm eager to see Rebellion on the track....for me the most serious contender. Due to the NA Gibson powerplant as well probably the most reliable.(based on LMP2 2017)
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21 Feb 2018, 20:31 (Ref:3803013) | #1085 | ||
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Join Date: Aug 2016
Posts: 1,920
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Quote:
As you may know, is really really unlikely that a 9000rpm NA engine may have same fuel efficiency of a turbo engine..... At same fuel flow rate, turbo engines will have more hp and better consumes. It's just maths. |
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21 Feb 2018, 20:42 (Ref:3803016) | #1086 | |
Racer
Join Date: Feb 2018
Posts: 166
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All true, but to win the car must move at 15:00 Sunday as well. Neither the AER, Nismo nor the Mecachrome will fulfill this requirement. So my bet is on Rebellion.
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21 Feb 2018, 21:11 (Ref:3803022) | #1087 | ||
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Quote:
How can you say that mecachrome engine is unreliable? basically its whole life was spent in a dynanometer so far |
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21 Feb 2018, 21:22 (Ref:3803024) | #1088 | |||
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Join Date: Jan 2010
Posts: 6,270
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Quote:
And the Mecachrome is supposed to be reliable as it's the same engine that will be in the whole F2 field. And according to the F2 website, http://www.fiaformula2.com/Guide-to/The-car-and-engine/, rebuild interval is 8000 km. More than enough for pretty much the whole of Thursday quali, warmup and the race at Le Mans. |
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__________________
When in doubt? C4. |
21 Feb 2018, 21:41 (Ref:3803026) | #1089 | ||
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Join Date: Jan 2015
Posts: 54
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Quote:
All in all, I think a lot of questions still hanging over every engine in a privateer car. |
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21 Feb 2018, 21:53 (Ref:3803028) | #1090 | |
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Join Date: Aug 2016
Posts: 1,920
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Agree, can't remember any big issue from nissan engine, as dear victor_ro said, during last le mans CLM engine blow as a tragic consequence of bodywork damage during the very first minute of the first lap.
We will never be allowed to know real efficiency % of porsce/toyota/nismo-cosworth engines, but no doubts to me that nismo v6 is the petrol most powerful engine ever made in lmp1. Me too have concerns about mecachrome motor; not just about reliability, but about wierd structure and figures.... an high rev 3.4 turned in a single turbocharged 3.4L with a not so great torque release despite displacement.... it's just an unusual design.... anyway time will tell. |
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21 Feb 2018, 22:55 (Ref:3803043) | #1091 | ||
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Quote:
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22 Feb 2018, 07:55 (Ref:3803077) | #1092 | ||
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Quote:
Welcome to 10Tenths, by the way! |
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22 Feb 2018, 07:58 (Ref:3803079) | #1093 | |
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22 Feb 2018, 09:41 (Ref:3803096) | #1094 | |
Racer
Join Date: Feb 2018
Posts: 166
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Thank You for the warm welcome!
I've been once to LeMans in 2016 and will go this year again. Can't wait.... Back to the topic I do not share the widespread opinion of a 'hollow' Toyota victory. I see the privateers very competitive and the ones with Gibson powerplant in favour. Unless ACO biasing it I think Toyota will sweat..... |
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22 Feb 2018, 09:59 (Ref:3803099) | #1095 | |
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I think that's what we're all hoping, and a pack of 8 privateers will hopefully produce at least a couple of cars at each round which remain reliable enough to make a race of it. Toyota will have an advantage in terms of time spent in the pits, but any issues and we should have a race. It all looks very promising, but who knows how things will actually pan out.
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22 Feb 2018, 10:15 (Ref:3803102) | #1096 | |
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Join Date: Aug 2016
Posts: 1,920
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Impressive indeed, can't rember in which topic, but another user some time ago reported a maths formula to calculate a (theoric) max power knowing thermal efficiency and fuel flow rate
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23 Feb 2018, 10:10 (Ref:3803363) | #1097 | |
Racer
Join Date: Dec 2013
Posts: 136
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Power [kW] = FuelFlow [kg/h] * EnergyDensity [MJ/kg] * Efficiency [%] / 3600 * 1000
The 3600 and 1000 are needed to convert hours into seconds and MJ into kJ. For the power in hp, multiply by 1.36. The energy density of the fuel should be around 40 to 42 MJ/kg. |
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23 Feb 2018, 10:31 (Ref:3803366) | #1098 | ||
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Quote:
Last edited by canaglia; 23 Feb 2018 at 10:37. |
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23 Feb 2018, 15:15 (Ref:3803420) | #1099 | |
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Join Date: Mar 2014
Posts: 614
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They are using E20 petrol with lower MJ/kg.
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23 Feb 2018, 16:16 (Ref:3803434) | #1100 | |
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Join Date: Aug 2016
Posts: 1,920
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Guess 42MJ/kg is correct because "standard" petrol energy/density is about 44MJ/kg and over.
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