LMP Testing

[sumbrownkid]

Hey guys, I was messing around with my racers at La Sarthe, but then I got the idea to make them limited via horsepower.

I limited all my LMP cars at 750 HP, and see if they are all equal in speed.

To my surprise, the Pescarolo Hybrid, one of the faster cars unrestricted, conks out at 226 mph.

The Audi R8 (both 01 and 05) reach 228 mph.

The LMR posted 227 mph.

But what's surprising is that the closed prototypes (I included the CLK LM also since it was a quasi prototype) ran faster speeds, even if they had more weight.

The top was the usual suspect, the Toyota GT-One climbing to 233 mph with signs that it can reach beyond 240 mph.

Then came the Bentley at 231 mph.

The Peugeot 908 was 229 mph (The torque numbers don't justify this speed.),

The CLK LM though is the second biggest shocker posting 228 mph while carrying more weight (100 KG).

The numbers I got led me to think: Does GT5 replicate wind resistance? Because in reality closed cockpit prototypes tend to have advantage in speed due to less drag, and my game is so far leading me to that...

Or am I way over my head?

 

[DLR]

Each LMP car has different downforce settings, did you set those the same? Also some cars only have 5 gears while others have 6. Many other things come into play when you want to reach high speed other than HP 👍

 

[Schwartz]

Yes and transmission settings will completely change your results, so this test is kind of, um...

 

[DLR]

Yes and transmission settings will completely change your results, so this test is kind of, um...

Unless they were kept stock, as well as suspension.

 

[Schwartz]

Yes, GT5 does replicate aerodynamics for 2 reasons:
1:adjustable downforce makes a noticable difference.
2:Cars with better aerodynamics have higher PP.

 

[gogatrs]

Yes, GT5 does replicate aerodynamics for 2 reasons:
1:adjustable downforce makes a noticable difference
2:Cars with better aerodynamics have higher PP.

But with more downforce, you'd have less top speed in real life. In GT5 however, it only brings you down a couple of mph.

 

[sumbrownkid]

The aero was set to max possible. The transmission was set to 249 mph and every car has stage 3 turbo. Suspensions were kept stock, only the camber was adjusted to within a 1-2 degree range.

 

[Schwartz]

The aero was set to max possible. The transmission was set to 249 mph and very car has stage 3 turbo.

Yes but the aero changes between cars.

 

[sumbrownkid]

The aero was set to max possible. The transmission was set to 249 mph and every car has stage 3 turbo. Suspensions were kept stock, only the camber was adjusted to within a 1-2 degree range.

Yes but the aero changes between cars.

Only wild card is the clk lm, which has a little less downforce due to not being a purebred prototype.

 

[panzabonanza]

umm, the CLK-GTR was most definitely a ground-up thoroughbred prototype race car with massive amounts of downforce.

I would agree with what's been said...the game definitely seems to account for cD, however the reduction in max speed doesn't seem to correlate well with added downforce.

But I'm inclined to think that aero set at "60" on one car doesn't mean the same as "60" on another car, so it'd be hard to really set a control for this type of test

 

[sumbrownkid]

Compared to the gt one and the lmr the clk gtr was a pretty conventional gt car with more intricate body work.

 

[seanneedscar]

umm, the CLK-GTR was most definitely a ground-up thoroughbred prototype race car with massive amounts of downforce.

I would agree with what's been said...the game definitely seems to account for cD, however the reduction in max speed doesn't seem to correlate well with added downforce.

But I'm inclined to think that aero set at "60" on one car doesn't mean the same as "60" on another car, so it'd be hard to really set a control for this type of test

So youre proposing that GT5 takes the cars' bodies inherent downforce into account, as well as the adjustable aero. I've always wondered this

Anyway, back on topic, its cool that you spent the time doing this and all, but, top speed doesnt really mean anything to me, i wish you'd take them to a track and test the laptimes 👍