24 Hours Behind the Wheel

  • Thread starter M2R
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M2R

16
Le' Sarthe-II - 98 Mercedes CLK-GTR, 179 points, 437 laps.

Car had about 90 miles on it starting the race; all of those are setup miles. Car has no modifications but the pit crew gathers up a full complement of racing tires and probably puts in fresh oil before the race. Race setup is minimal downforce, long and soft suspension travel, with the gearing pegging the limiter all the way down the last 2/3 of the long straight. I figure with this gearing, as the car goes away it will still pull good at the end.

Race came in at 179 points, 437 laps with the 88C-V one lap and maybe 20 seconds down in second place. The C9 was in third place not sure how many laps down but quite a few. The rest of the field was rounded out by the R89C, 787B, and the XJ-9R, no idea how they came out. I lost track of the C9 when he went down 3 and lost track of the others long before that.

Started on R2/R1 tires and was able to turn 3:10-3:13 laps but the 88C-V was able to turn the same lap times depending on how much fuel they had on board. Hit the occasional low 3:09 lap and by hour 4 was able to pull out a 40 second lead, mainly due to my longer pit strategy. He's running a 7 lap window and I'm on 9. But hooked a tire pitting-in which resulted in a spectacular spin that had the car in the sand up against the outside wall way down past pit entrance. Lost all 40 seconds and then some getting out of the sand and working back into the pits against traffic.

Built up another 20 second lead by hour 8 but the poor CLK wasn't pulling as hard and the lap times were creeping up to the 3:11-3:16 range (full fuel load is now more penal). By hour 13 the CLK is shaking badly and it is a struggle to stay on the track, it has also slipped back to trail the 88C-V by 17 seconds. In a desperate move the pit strategy was changed to R2/R3 tires and short fueling to 70 liters. This move pays off as the car is drivable again and back on a 3:10-3:15 pace with and occasional 3:08-3:09.

Unfortunately between the hours of 18 and 20 the CLK's handling deteriorates significantly but not to the point where it is anything but a pain in the differential. At 22:38 the oil light on the CLK comes on, thankfully the lap times are holding but the handling is still slipping. However it looks like the 88C-V is also suffering, in fact it looks like the only car on the track that isn't falling apart is the C9 and to a lesser extent maybe the 787B.

In the last half hour the CLK has deteriorated to the point where it is barely drivable and crashes every three or four laps. Most of the crashes are on the long straight just past where the first chicane for Le' Sarthe-I turns in. There is a bump there and if the car hits it with it's tail wagging just right, the car snaps straight left into the Armco. So the strategy becomes to coast thru that section off throttle. Unfortunately there is also a smaller bump several hundred yards further down track that also occasionally snaps the car into the right Armco. But even with all the crashing the 88C-V isn't able to make up more than a dozen seconds, so it is clearly experiencing issues of it's own.

Post race in the garage the CLK shows 769 HP, and jumps to 819 HP with an oil change (over 6%?). I'm baffled at some of this data. I was under the impression that the oil light will not come on in any single race ... I was surprised when it did. However, since then I have read other reports where it did also. I thought HP loss was limited to 5% max. I'm also surprised that no one mentions how badly the handling of the car goes off ... ok maybe I can dismiss this as a poor setup issue on my part. In Famine's race reports the 88C-V is about 10 seconds off the pace I was seeing (and it's finish seems consistent with that, 11 laps down). I wonder what the difference was, tires, tuning, or something else?

Lastly there is no longer any mystery in my mind why some people report the computer driver sometimes crashes at this track. No software bug here, I crash myself in the same way, at the same spot, and I assume for the same reason. Although strangely I have never seen my "Bob" do the crash bit here but I never let him drive this car either :)
 
I must agree with Smallhorses on both accounts.
-Good report, hope to see more from you.
-It is indeed mentioned in various threads that the cars suffer from degradation.

It is fixed by using the body refresh option in 'tuning' screen at the dealer.
My Mazda started off with a body refresh and after Sarthe I went back to the 'bodyshop' to have it refreshed again. It's the only option I know of that you can reapply.

+rep

AMG.
 
Smallhorses & AMG than you both very much. You both make some of the best, most interesting, and above all humorous report to read/view.

Of course you are both correct, chassis wear is widely discussed. Funny thing is when I originally read about it I think, ok yes that makes sense. However, after experiencing it for myself I think a very different thing. So I go back and read the sections Smallhorses points out and think, yes, yes, that is it exactly. Just like reading a book again after many years of living have passed. I always think, can this be the same book? I never saw any of this stuff in here before.

AMG the picture of the Jag directly behind the 905 in " Sarthe II 24 hours, le Mans revisited." is BEAUTIFUL! Maybe not the prettiest thing on the page :sly: but still a stunner for sure.

Smallhorses, I too like the Islay's ... Bowmore Legend for me thank you. Very far from the best but pleasure per dollar for me makes it good.
 
M2R
Smallhorses & AMG than you both very much. You both make some of the best, most interesting, and above all humorous report to read/view.

Thank you! :embarrassed:

M2R
Smallhorses, I too like the Islay's ... Bowmore Legend for me thank you. Very far from the best but pleasure per dollar for me makes it good.

I see you got distracted by the off-topic alcohol appreciation section of my Endurance companion too!
Recently finished a Caol Ila which is a distillery I've not sampled before, but will definitely buy again. :D
Current favourite and a little surprising for me, since I've always thought of Glenfiddich as the largest and most commercialised distillery, which I usually shy away from, but their Solera Reserve 15Yr is wonderful, and the slightly expensive 18Yr is worth every last penny, for the aroma alone! :drool::drool::drool::drool::drool: :drool::drool::drool::drool::drool:
Oh, no! I'm having a Homer Simpson moment! :lol:
 
Nurburgring 24hr - GT-R Concept (Tokyo Show) '01, 192 laps, 152 ASpec. points.

The contenders, GT-R Concept vs Falken GT-R
Status after 23 hours of grinding.​
theringstockgtrconceptvw3.jpg

GT-R Concept takes the checkers!​
finish4dq8.jpg

The players and final result.​
finish6ga7.jpg


The blah blah blah part of the adventure.

The primary goal was to find a car and lineup that would make for a good race. However the car choices were limited to the prize cars in the garage without any changes (except possibly fitting standard tires, doing GT4 without spending any credits). All in all I was very happy with the choice of the GT-R Concept. As you can see in the photos, the Falken was only back three and a half minutes after 23 hours.

My preference was to use a race car but they were all to fast for the typical lineups I was getting (and I tried and tried for better lineups) so back to testing street cars. Standard tires were fitted on a few race cars but that was just too perverted for my taste given I'd have to live with that for 24 hours. About 15 tests were done in an attempt to come up with the right car against the right lineup. My final choice was the GT-R Concept (Tokyo Show) '01 with 132 miles on it at the start of the race. Other than disabling the driving aids (and 132 miles on the odometer), the car was as delivered.

The GT-R Concept (GT-R from now on) was previously tested against a slower lineup and make it about 9 hours in and abandoned. Because the lap times with the GT-R had continued to improve as the hours passed, it was clear that the race was going to be a blow out (always a problem with long races).

In fact this run was also supposed to be a test of how the GT-R stacked up against a stronger field. Since I have faced this lineup at least three times already, I wasn't really excited to see it again. But on the first lap the Falken got held up by the 190E and the GT-R came in with a 7'33.865 up 10.8 seconds on the Falken. Lap two saw the GT-R post a 7'21.136 and the Falken (now clear of traffic) cut into the lead every so slightly with a 10.3 split. So now this is looking to be a real brawl and I just ran it out to see where it would go.

On the third lap the Falken really starts to make up ground and the split is now only 3.8 seconds. The GT-R's tires are starting to look a little ragged, especially the fronts, but a 3 lap pit strategy doesn't look like it will be competitive so the decision is made to stretch it to 4. Huge mistake, the Falken is burning fuel faster than the GT-R and really starting to fly. By the time the GT-R wobbles into the pits and gets 4 tires (no fuel), it is about 40 seconds down in second place. The deficit would have been a LOT more if the Falken driver was more skilled at getting past slower cars.

Now it's not looking good for the poor stock GT-R. But as fate would have it the Falken also drops a bunch of time on it's fifth lap before pitting in. All the sudden it's interesting again. The GT-R settles into a 3 lap pit strategy short fueling to 38 liters. But with the strange 3 vs 5 pit strategies it's really hard to tell who is leading and by how much.

For the next two hours the two cars swap leads as the ebb and flow of the pit cycles work themselves out. Then a string of errors by the GT-R pilot cause it to lose about 15 seconds. Now it is CLEAR the Falken is in the lead and controlling the race. If the GT-R driver can't find some way to shed a few seconds (and/or not make mistakes) this thing is over.

By hour 6 the driver in the GT-R has finally figured out a rhythm that is working and is starting to take control of the race. One lap to warm up the tires, being careful not to make mistakes, on cold tires the car isn't real tolerant. One lap to fly before the tires start to fade, don't try to save anything for the pit in lap. On the pit lap try to be smooth and steady and somehow hold 7:30 (or better).

For the next 15 hours the GT-R continues to hold to the routine and is putting the Falken down 5-10 seconds per hour. Hour 21 sees the GT-R chassis degrade very slightly but not enough to cause any concern within the team. The chassis doesn't degrade any further for the duration of the race. This GT-R is one sweet choice for a stocker at this venue.

The last three hour go by uneventfully and the GT-R takes the checkers at 24:04'35.816 with the Falken 3'42 back. The Opel and Mercedes make a good showing three laps down, the rest of the field struggled.
 
:bowdown:!

That's a seriously cool achievement M2R! Thanks for sharing that with us! You should've put it in it's own thread, as it deserves more recognition than it's currently getting hidden away in here behind your Sarthe report! :(
 
Welcome M2R...What a nice first impression you are making with these well described posts…+ rep for you my friend!
 
Thanks guys!

: ... You should've put it in it's own thread, as it deserves more recognition than it's currently getting hidden away in here behind your Sarthe report! :(

Yea I wondered about that. From the start I intended to post all my 24 hour reports here and thus the generic title "24 Hours Behind the Wheel". But no worries, getting to enjoy this race first person was a rush.
 
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