Something fishy about Indy GP and Indy oval

  • Thread starter Thread starter s-oso
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s-oso

s-oso

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lavosim
Why do I get lower top speed and accelaration in Indianapolis oval track than on Indy GP?

I tried it with different cars and it always appears that Indy GP is faster. In Formula-GT I could reach 400km/h on home straight with ease, but on Indy oval which has longer straights and opportunities to gain speed, I couldn't reach it! I'm preatty sure that I wasn't drafting anyone and that I had the same setup....
 
In Daytona everything appears to be normal, and there is no difference in elevation, it is the same track. The only difference is that you are driving one clockwise and one counterclockwise. They surely haven't implemented difference in grip caused by the fact that tracks is much more regularly driven on oval?

Anyway, I've tried everything I thought of, could maybe some of you guys tried this to see if I have something set wrongly. Just take some fast car, enter time trial at both tracks and see what top speed you get on same settings.
 
Also important to know, what speed DID you actually reach on the oval then? Cause if it's just 5 KM/H less, it might have something to do with the angle you exited the corner with?
 
Maybe it's the same, but...
I did a top speed run with my Veyron on the SSR7 (or whatever it's called).
First, I have reached 475kmh (and it didn't allow me to go any faster)
Second time, with EVERYTHING the same, I only reached 470 (again, I couldn't get any faster)
 
Could be something as simple as head wind. Since you are driving the opposite direction, makes sense.
 
GT5 is so realistic that it accounts for the difference in wind direction depending on which way round the track you go....?

You guys... :lol:
 
So GT5 has wind now? I really need to unlock that horse now, imagine how good my bob's long hair would look when riding into the sunset.
 
Ya Pops
GT5 is so realistic that it accounts for the difference in wind direction depending on which way round the track you go....?

You guys... :lol:
Click to expand...

I've always assumed it was the case from day 1. I've felt that I could reach a higher speed on the front straight at Indy than I could on the back. (Or vice versa. Forget which.) Never done any actual testing though. I'll check it out this evening.
 
Kaaosherra
So GT5 has wind now? I really need to unlock that horse now, imagine how good my bob's long hair would look when riding into the sunset.
Click to expand...

Well if you look at the smoke, it is wind blown, but not always, sometimes it's still, sometimes it drifts
 
Last edited:
CoolColJ
So, it's not like anyone is using fluid dynamics in real time to calculate downforce and air turbulence outside of supercomputers used in research labs, which are not in real time....
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It isn't really necessary either. GT5 could model drag relatively easily with just coefficient of drag, frontal area, and wind speed relative to the car. In that case, it's not "precalculated" yet it's also simple enough to be done 60 times per second (or whatever frequency the GT5 physics engine runs at).

Now, whether GT5 actually does it or not is another story...
 
Run the oval the opposite way round and see what you get to by the GP course turn 1.
 
Just tried this using a fully modded STI and an FGT. Both standing starts from the same place on each track. I started from where the asphault starts just to the left of where the GP track joins back up with the oval. I ran till the white line just after the pits (Pit exit for GP, just before the pits for oval track) Both cars ran within 1 mph on each track. Unless there were some wind or humidity related issues working in the game when you played, i don't see why there would be any difference.
 
You could also just run the wrong way in a time trial, no need to actually switch from one version of the track to another. If there's wind, you'll see it anyways.
 

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