Le Mans track problem.

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lavosim
What's with the bumps on mulsanne straight and why are they so extreme? Any car that you drive is constantly rocking left to right on uneven parts of the track. The section after first chicane is especially bad, almost feels like being on a ship in a storm. It's not making it harder to drive, but visually it looks so bad that it's ruining my whole driving experience. It really is turning one of my favourite tracks, into a nightmare.
 
s-oso
What's with the bumps on mulsanne straight and why are they so extreme? Any car that you drive is constantly rocking left to right on uneven parts of the track. The section after first chicane is especially bad, almost feels like being on a ship in a storm. It's not making it harder to drive, but visually it looks so bad that it's ruining my whole driving experience. It really is turning one of my favourite tracks, into a nightmare.
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I never drove on the real thing to be sure, but I think that kind of bump is what you get on a public road.
 
s-oso
What's with the bumps on mulsanne straight and why are they so extreme? Any car that you drive is constantly rocking left to right on uneven parts of the track. The section after first chicane is especially bad, almost feels like being on a ship in a storm. It's not making it harder to drive, but visually it looks so bad that it's ruining my whole driving experience. It really is turning one of my favourite tracks, into a nightmare.
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It was also like that in GT5 too, and much more pronounced in some cars than others.
 
Oberheim
That was down to a design flaw on the Merc...... That they refused to acknowledge until 3 cars became airborne and nearly killed 2 drivers?
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Still its a public road no matter what you race there is going to be right on the limits/ over the limits of stability, Due to the undulations in the road, It becomes more pronounced on racecars thanks to the stiffer suspension and other such chassis related settings.
 
ghostrider135
Still its a public road no matter what you race there is going to be right on the limits/ over the limits of stability, Due to the undulations in the road, It becomes more pronounced on racecars thanks to the stiffer suspension and other such chassis related settings.
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This.
 
ghostrider135
Still its a public road no matter what you race there is going to be right on the limits/ over the limits of stability, Due to the undulations in the road, It becomes more pronounced on racecars thanks to the stiffer suspension and other such chassis related settings.
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Absolutely. I was going to edit my post and add that it was probably accentuated by the road surface.
 
Oberheim
Absolutely. I was going to edit my post and add that it was probably accentuated by the road surface.
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In those CLR crashes they went over a slope and the bad design of the front aerodynamica made the wind come under the bottom and lift the car, to my understanding that wasn't related to bumpiness at all:

 
Oberheim
Anyone run the 787B in GT6? Does it still sound as good as GT5 or better? The Peugot 908 sounds better in GT6 than GT5. More mechanical.
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I haven't yet, only bought one today :lol:
Still my favourite Race Car of the whole series man... love it!
 
s-oso
Bumps yes, but you see no boat like rickatyrocking like it's in the game.

From 55s onward:
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Yes I see what it is you're saying. The side to side rocking. Thing is, I've never seen a game not do this from these kind of views. I'm not sure if it's possible to programme a PS3 game (limited memory resources) to take chassis flexing into account, although I would say that I'd have thought the new suspension modeling would have cut that down to a minimum.

I think that it may be exaggerating the fact that the Mulsane straight is exceptionally bumpy and challenging, made worse by speed.

There again, you've never seen the S1 Quattro Pikes Peak on the Mulsane, never mind sharing the track with an LMP1!
 
I love the bumps on the Mulsanne, and from what I can gather ( because I've never been to France much less driven the road ) it's a realistic representation. This is one of the oldest race tracks in the world, & happens to be a public road when it's not being raced on, so, like the 'ring, it's going to be anything but billiard table smooth. I find those bumps really enhance the feeling of speed & being barely in control of the car as it hurtles along, love it! :)
 
Oberheim
Yes I see what it is you're saying. The side to side rocking. Thing is, I've never seen a game not do this from these kind of views. I'm not sure if it's possible to programme a PS3 game (limited memory resources) to take chassis flexing into account, although I would say that I'd have thought the new suspension modeling would have cut that down to a minimum.

I think that it may be exaggerating the fact that the Mulsane straight is exceptionally bumpy and challenging, made worse by speed.

There again, you've never seen the S1 Quattro Pikes Peak on the Mulsane, never mind sharing the track with an LMP1!
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Exactly. But I don't think it's spring problem. I believe it's the problem with how the track is modelled, a poor job by PD maybe. Look at Nordschleife, similar straight, bumps again, but ride remains enjoyable and not at all jerky like it is on Le Mans.

I know they didn't use laser scanning, but does anyone know what they did use?
 
s-oso
Exactly. But I don't think it's spring problem. I believe it's the problem with how the track is modelled, a poor job by PD maybe. Look at Nordschleife, similar straight, bumps again, but ride remains enjoyable and not at all jerky like it is on Le Mans.

I know they didn't use laser scanning, but does anyone know what they did use?
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I'd say it's the car modeling. That straight is really a horrendous road in real life. The drivers of the old Group C prototypes, that used ground effect, were particularly anxious when going down that straight, especially when there was no chicanes. With ground effect and speeds in excess of 240mph, if the car rebounded too hard and airflow got under the car, there was very little chance of the driver staying alive.

Because of it, there is one or two spots where the middle of the road is avoided completely (driving slowly over them could beach the car). The harsh camber angles mean the aerodynamics work very hard to keep the car put, even more so on todays cars with no ground effect.
 
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s-oso
Exactly. But I don't think it's spring problem. I believe it's the problem with how the track is modelled, a poor job by PD maybe. Look at Nordschleife, similar straight, bumps again, but ride remains enjoyable and not at all jerky like it is on Le Mans.

I know they didn't use laser scanning, but does anyone know what they did use?
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The difference is yes the Nurburgring is also a public road but it is infact still a purpose built racetrack that has seen its share of upgrades through the years, Le Sarthe is a proper public road vehicles use it all year round, The track modelling is fantastic, The visuals are what could be better.

Also take Monaco as another example the road is bumpier than a teenagers face coming down from casino square as it in in real life, Yet again public roads used as a racetrack.
 
ghostrider135
The difference is yes the Nurburgring is also a public road but it is infact still a purpose built racetrack that has seen its share of upgrades through the years, Le Sarthe is a proper public road vehicles use it all year round, The track modelling is fantastic, The visuals are what could be better.
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With HGV's trundling along it. We all know what they do to roads, especially in the summer.
 
s-oso
What's with the bumps on mulsanne straight and why are they so extreme? Any car that you drive is constantly rocking left to right on uneven parts of the track. The section after first chicane is especially bad, almost feels like being on a ship in a storm. It's not making it harder to drive, but visually it looks so bad that it's ruining my whole driving experience. It really is turning one of my favourite tracks, into a nightmare.
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No bumps. Its been that way since GT5 at least. Those are local streets. That's tar. Big trucks driving on that road most of the year and that's what you get; uneven pavement.
 
I have to side with s-oso. There are a number of places on the track in the game where the car hops a good two inches at least. Watching the real race, as well as the 787B video above, I see nothing anywhere near what you see in the game.
The easiest spot I can think of is the first chicane. Right at the apex of the left-hander, the pavement drops away from you, but I don't notice it in the 787B video. Furthermore, there is a massive bump that kicks my car up exiting the chicane on the left side. In the 787B video, the car exits and remains flat throughout. Mind you, I have tried using my soft set-up to see if it relieves the problem and the car still behaves violently. This kind of phenomenon is found throughout the entire track, not just the Mulsanne.
I don't deny that the track is bumpy in real life, but I doubt that it has the massive dips and bumps that are represented in the game. Heck, even the older Porsche video makes the track look smoother.
 
Oberheim
That was down to a design flaw on the Merc...... That they refused to acknowledge until 3 cars became airborne and nearly killed 2 drivers!
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So why did they aco reduce the crest where this incident happened

Lemans cars are run with soft suspension and there is a rule that no bodywork can touch the ground when tgere is a puncture. With the crown in the road as its a public road the cars run on one side or the other tobreduce the risk if grounding
 
ghostrider135
The difference is yes the Nurburgring is also a public road but it is infact still a purpose built racetrack that has seen its share of upgrades through the years, Le Sarthe is a proper public road vehicles use it all year round, The track modelling is fantastic, The visuals are what could be better.

Also take Monaco as another example the road is bumpier than a teenagers face coming down from casino square as it in in real life, Yet again public roads used as a racetrack.
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The nurburgring is actually a public toll road with no speed limit.
Monaco checks and resurfaces the road if it does not be in check
 
dj-smurph
So why did they aco reduce the crest where this incident happened

Lemans cars are run with soft suspension and there is a rule that no bodywork can touch the ground when tgere is a puncture. With the crown in the road as its a public road the cars run on one side or the other tobreduce the risk if grounding
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Generally you want no bodywork touching the ground anytime. The Merc's were caused by a very smooth flat bottom design - Dumbreck took off on the run down to Indianapolis, Webber flipped at the crest at the end of the Mulsanne, it had been known for cars to flip there before - A Sauber did in the early 90's.
 
The Mecedes crash in 1999 had nothing to do with the bumps in the road. It was a interaction of a hill and the poor construction of the CLK LMR at the front. For the next year they smoothen the hill a bit which is weird in my mind because you have to adapt a car to the track not vice versa.
And the bumps in the track are because its a public road. I drove myself over it before the race in 2012 and you can feel it. The ruttings in the road mostly come from the trucks driving there all day.
 
s-oso
What's with the bumps on mulsanne straight and why are they so extreme? Any car that you drive is constantly rocking left to right on uneven parts of the track. The section after first chicane is especially bad, almost feels like being on a ship in a storm. It's not making it harder to drive, but visually it looks so bad that it's ruining my whole driving experience. It really is turning one of my favourite tracks, into a nightmare.
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I'm guessing you haven't played GT4 and 5 as it was the same in both of those games too; though it got better/more realistic with each successive game.

You say that you don't think it's the springs, though I always tune my suspension for Le Mans, which makes handling easier at high speeds. You need a softer set-up, trust me :)
 

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