rec.autos.simulators

Tir e wear in GPL

Carl

Tir e wear in GPL

by Carl » Mon, 19 Jun 2000 04:00:00

I  was wondering if there is a form of tirewear in GPL,
when driving a full grand prix the car seems to be handeling different
after  a couple of laps. Is this because the tires are getting to hot?
JTW620

Tir e wear in GPL

by JTW620 » Mon, 19 Jun 2000 04:00:00

  I just got GPL myself a few days ago and love it.  After driving a couple
laps, the car will definately drive differently and yes, you got it, it's
because the tires are getting hot.  
  I don't know if tirewear is modelled or not.  Probably is.  It was simulated
in ICR2 by Papyrus, so I'd imagine so.  Anybody out there who runs long races
know for sure?

Todd Wasson

Joachim Blu

Tir e wear in GPL

by Joachim Blu » Mon, 19 Jun 2000 04:00:00


Hi!

No, tirewear is not modeled in GPL, i. e. tires don't get washed out during the race. But, yes, the temperature directly effects the handling of the car. For example if you drive at Zandvoort and overcook it too long, then after some 3 or 4 laps you'll not be able to drive further fast laps. Or try the following at Monza: Drive from the pits to the red Coke-sign on the right and gently touch it with the front of the car. Then go into first gear, rev up the engine and break your rear tires loose. Upshift into 2nd, 3rd, 4th and even 5th and keep the tires sqealing for approx. 30 seconds. After this, with tires now at about 300C, try a quick lap. Have fun ;)).

Regards
Crash

Speedy Fas

Tir e wear in GPL

by Speedy Fas » Tue, 20 Jun 2000 04:00:00


>I  was wondering if there is a form of tirewear in GPL,
>when driving a full grand prix the car seems to be handeling different
>after  a couple of laps. Is this because the tires are getting to hot?

According to others tirewear is NOT modelled.  It does however state
in the manual you received with your sim how many races your tires are
capable of lasting.  Therefore you can only conclude that tire wear
isn't  all that important during this era.

-----------
"My dispute is with the IRL. I will not support the IRL because I think that's
what has disrupted open-wheel racing in America for us.  I mean, we are pulling
in different directions and that doesn't make sense."
  -- Mario Andretti, May 2000

Juan Montoya tells the truth about the Indianapolis Motor Speedway
  http://espn.go.com/media/2000/q2/car_000517jm1a.wav
Oval racing is 98% engineering and 2% driver talent.

Kevin Gavit

Tir e wear in GPL

by Kevin Gavit » Tue, 20 Jun 2000 04:00:00


In the era of GPL tires were often thought to still be "green" if they only
had one race on them. Thus, tire wear isn't really an issue. Heat is though.
I've done some actual scientfic tests of this. Right at about 300 degrees
grip starts to drop off

The actual drop off is actually well under .1 of a g, but if you're at the
limit that feels like the difference between being stuck to the road like
glue and driving on ice.

JTW620

Tir e wear in GPL

by JTW620 » Tue, 20 Jun 2000 04:00:00

  Looking in the gpl_ai file:

base_tire_wear = 0.000000                       ; wear (as traction circle
coeff.) per kilometer (1000 ms)

Of course, this is for the AI cars and is set to 0 tire wear.  I wonder if the
player cars use this file too for anything.  I doubt it since the file is
Gpl_AI, but who knows?

Todd Wasson

Mike Barlo

Tir e wear in GPL

by Mike Barlo » Tue, 20 Jun 2000 04:00:00



>>I  was wondering if there is a form of tirewear in GPL,
>>when driving a full grand prix the car seems to be handeling different
>>after  a couple of laps. Is this because the tires are getting to hot?

>According to others tirewear is NOT modelled.  It does however state
>in the manual you received with your sim how many races your tires are
>capable of lasting.  Therefore you can only conclude that tire wear
>isn't  all that important during this era.

    Fuel load (weight) is a factor and *could be* the main reason you notice
a difference.
J

Tir e wear in GPL

by J » Wed, 21 Jun 2000 04:00:00

Sounds great - new league???

The 300+ Series - only for real Hotshoes ;-)

Jens

On Sun, 18 Jun 2000 22:10:08 +0200, "Joachim Blum"

<snip>
tires sqealing for approx. 30 seconds. After this, with tires now at about
300C, try a quick lap. Have fun ;)).

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