|
||||||||||
|
||||||||||
13 Dec 2016, 15:06 (Ref:3695839) | #1976 | |
Veteran
Join Date: Nov 2015
Posts: 3,002
|
||
|
13 Dec 2016, 17:39 (Ref:3695901) | #1977 | |
Veteran
Join Date: Jan 2003
Posts: 1,308
|
ESM and Rebellion will be racing at Daytona but are testing at Sebring.
|
|
|
13 Dec 2016, 19:09 (Ref:3695917) | #1978 | ||
Race Official
Veteran
Join Date: Oct 2007
Posts: 16,580
|
|||
|
13 Dec 2016, 19:19 (Ref:3695920) | #1979 | |
Veteran
Join Date: Mar 2015
Posts: 11,119
|
||
|
13 Dec 2016, 20:16 (Ref:3695936) | #1980 | ||
Veteran
Join Date: Mar 2011
Posts: 1,938
|
They expect to do the first shakedown at the end of December.
http://www.racer.com/imsa/item/13640...for-nissan-dpi |
||
|
13 Dec 2016, 20:17 (Ref:3695937) | #1981 | |||
Race Official
Veteran
Join Date: Oct 2007
Posts: 16,580
|
Quote:
|
|||
|
13 Dec 2016, 20:27 (Ref:3695939) | #1982 | |
Veteran
Join Date: Jan 2003
Posts: 1,308
|
||
|
13 Dec 2016, 20:36 (Ref:3695940) | #1983 | |
Veteran
Join Date: Sep 2010
Posts: 15,585
|
The fact that Nissan is saying they were working on the cooling and packaging first seems like a good idea. The reports from Daytona now are that the Mazda and Cadillac are having a small issue with things like that. Testing can help with that though so they may still have the leg up on the Nissan.
|
|
|
15 Dec 2016, 18:28 (Ref:3696470) | #1984 | ||
Veteran
Join Date: Mar 2011
Posts: 1,938
|
|||
|
15 Dec 2016, 18:45 (Ref:3696473) | #1985 | |
Veteran
Join Date: Aug 2016
Posts: 1,920
|
give lmp1 tyres size, a 50kg break and the possibility to use different engines restricted to 600hp as well (like GM 6.2L, or road/GT3 derivated) and private lmp1 class will be back again
|
|
|
15 Dec 2016, 21:51 (Ref:3696521) | #1986 | |
Veteran
Join Date: Sep 2010
Posts: 15,585
|
They already have those options, but no one takes them up on it! I think the problem is there's not enough money put into a new car to properly develop it against the factory p1's.
|
|
|
16 Dec 2016, 16:09 (Ref:3696668) | #1987 | ||
Veteran
Join Date: Jan 2012
Posts: 4,434
|
Quote:
Must be some other Sebring. I have never seen any smooth concrete at the Sebring track in Florida. (BTW, English version for those of us who dropped out of high school and only read a little French: http://www.endurance-info.com/en/dun...ype-tyre-test/) "In the Dunlop test, the new LMP2 cars were close to the 2012 WEC LMP1 pace (the last time WEC visited Sebring). The new LMP2 cars were consistently lapping around 1m 47s. In 2012 the LMP1 pole time was 1m 45.8s. (NB: The LMP2 pole time in the 2016 Sebring 12h, running to IMSA tyre regulations, was 1m 51.2)" So ... another headline might have been, "Modern P2s still over a second slower than 2012 LMP1s." |
||
|
16 Dec 2016, 16:19 (Ref:3696673) | #1988 | |
Veteran
Join Date: Aug 2016
Posts: 1,920
|
Need to do a consideration:
2012 pole was set by a 2011 R18 TDI. The fastest private lmp1 qualified in 1.47.5 using wider and better michelin tyres, but very likely 50hp less. If during 2017 qualifying, pole will be set in a range of 1.46-1.47, it would be already a huge achievement, 4-5s performance jump forward in just one year is amazing. |
|
|
16 Dec 2016, 17:14 (Ref:3696685) | #1989 | ||
Veteran
Join Date: Jan 2012
Posts: 4,434
|
Quote:
If they are about as fast as the old rebellion Lolas ... well they swapped a 4.2-liter Gibson for the 3.4-liter Toyota motor (or a 6.2-liter stock-based Caddy engine.) I think we can assume better aero, so i am thinking that little boost in horsepower (top-end speed costs a lot of power) doesn't represent the top of the engines' ranges ... I assume reliability on par with the old motors. Looking at how the cars performed at Daytona with just a few days' testing, I think (and I know I can be a bit silly in my optimism but I think in this case it is totally justified) that 2017 will be a season on par with much of ALMS and better than anything Rolex or USCC has provided so far. Still ... i think it is a bit of PR to compare the cars to old P1 cars. The naturally aspirated, non-hybrid Peugeots and Audis of that era were exceedingly reliable and freaking Fast. I recall watching the Audis and Peugeots and rebellions at Petit back then (2011) ... the other P1s were fast, but the Peugeots and Audis were in another realm. I was halfway between T6 and T7 and the Audis and Peugeots (which were also very quiet compared to the rest) would almost leap into view and be halfway up the short connecting straight before I could turn my head to see them. |
||
|
16 Dec 2016, 17:17 (Ref:3696686) | #1990 | ||
Veteran
Join Date: Nov 2006
Posts: 8,919
|
|||
__________________
Probae esti in segetem sunt deteriorem datae fruges, tamen ipsae suaptae enitent |
16 Dec 2016, 17:32 (Ref:3696691) | #1991 | |
Veteran
Join Date: Jan 2012
Posts: 4,434
|
1 LMP1 #1 Audi Sport Team Joest Benoît Tréluyer 1:45.820 1
2 LMP1 #2 Audi Sport Team Joest Tom Kristensen 1:46.215 2 3 LMP1 #3 Audi Sport Team Joest Romain Dumas 1:46.935 3 |
|
|
16 Dec 2016, 19:13 (Ref:3696711) | #1992 | |
Veteran
Join Date: Sep 2010
Posts: 15,585
|
I assume they've dipped into the 1:46's. But will the conti's be at that pace vs the Dunlop? That's what I'm looking forward to seeing. I sure hope their new tire is a big step up and not just Dunlop's.
|
|
|
16 Dec 2016, 20:09 (Ref:3696722) | #1993 | |
Veteran
Join Date: Jan 2012
Posts: 4,434
|
"Continental: the race tire that lasts like a road tire."
And performs about as well. They build a tire that doesn't fall off over a stint ... for a series with pit stop rules designed to discourage double stinting. |
|
|
17 Dec 2016, 14:43 (Ref:3696827) | #1994 | ||
Veteran
Join Date: Mar 2013
Posts: 797
|
I have often wondered if that rule isn't partly to help Continental - they sell a lot more tires and don't have to worry about making something that will last two or three stints. Certainly in a spec tire series ultimate lap time is low on the priority list for the tire.
|
||
|
18 Dec 2016, 02:02 (Ref:3696890) | #1995 | |
Veteran
Join Date: Mar 2007
Posts: 522
|
They'd sell more if they had higher deg though.
|
|
|
23 Dec 2016, 13:35 (Ref:3698118) | #1996 | ||
Veteran
Join Date: Mar 2011
Posts: 1,938
|
Good article of the Ligier JSP217 and Nissan DPI
http://www.racecar-engineering.com/c...form=hootsuite |
||
|
23 Dec 2016, 16:04 (Ref:3698137) | #1997 | ||
Veteran
Join Date: Mar 2015
Posts: 1,179
|
Great read, thank you
|
||
|
29 Dec 2016, 18:49 (Ref:3699012) | #1998 | ||
Veteran
Join Date: Mar 2015
Posts: 1,179
|
|||
|
29 Dec 2016, 19:32 (Ref:3699016) | #1999 | |||
Race Official
Veteran
Join Date: Jan 2003
Posts: 18,883
|
Quote:
Quote:
Thanks for posting. |
|||
|
10 Mar 2017, 15:50 (Ref:3717802) | #2000 | |
Veteran
Join Date: Jun 2012
Posts: 1,467
|
DSC article about the Dunlop test in Aragon mentions Rebellion reaching a top speed of 220 mph (!) on the back straight with a very low drag DF, quasi le mans spec kit.
With that kind of speed, we should see the LMP1 get easily passed on the straights, even though they might outaccelerate LMP2s out of the corners. Will the ACO be okay with it? |
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Judd LMP2 engine | Mike_Wooshy | Sportscar & GT Racing | 19 | 3 Feb 2011 22:21 |
New LMP2 engine - and (more) rule changes | ss_collins | Sportscar & GT Racing | 42 | 4 Oct 2008 14:49 |
Manufacturers propose new engine regs | Marbot | Formula One | 20 | 20 Oct 2007 12:17 |
LMP2 engine changes? (merged) | JAG | Sportscar & GT Racing | 31 | 20 Jun 2006 10:20 |
Engine Suppliers Championship? | Mr V | Formula One | 4 | 29 May 2002 09:46 |