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The test of realism - Indycar 2/CART Racing

6 posts by 6 people · 06 Aug 1999 - 09 Aug 1999

Diamondcutt 06 Aug 1999#484452
When I was at the Indy time trials, I noticed the the cars drifted away from the wall on the front stretch, then darted back to the outside to make the turn. I was curious about that Was there some aerodynamic reason that the car wouldn't handle well right by the wall? The NASCAR boys almost always keep the car up against the wall on the superspeedways (Michigan, Darlington). So why don't Indy cars? I had a chance to speak with a couple of IRL drivers this weekend at Dover and asked about that. I was told that on the straightaways the drivers relax their grip on the steering wheel to 1) get a little rest for a moment and 2) allow the car to go where it wants to (zero pressure on the steering wheel equals more speed . . . any turn of the wheels scrubs off speed) It is the stagger built into the chassis and the tire selection that causes the car to lead left like that. So, the question is: Does this dynamic show up in the various indycar and other sims? And, is it like In Real Life (IRL -- ha ha) that you go faster when you relax on the wheel and car drifts to the left? Really curious -the Diamondcutter 98 Swiss Hutless/Yamaha KT100 racing kart 96 Invader/Briggs racing kart
Dan Belcher 06 Aug 1999#484453
Well, from what I understand after watching Indianapolis 500 time trials a year or so ago on TV, drivers tend to move away from the wall, especially at Indy, to help reduce aerodynamic drag as well as to help keep from turning the wheel as yes, steering inputs slow the car down. When the front wheels aren't perfectly straight with the road, there's added friction and rolling drag to slow the cars down. And as we know, every thousandth of a second is important in racing. Dan Belcher Team Racing Unlimited
Especially oval racing. But I don't think its modeled quite as well in any of the Indy/CART style sims out on the market enough that you'd get this pronounced of effect in the game. Perhaps a GPL type physics engine might reproduce a closer simulation of it.
It's true in GPL because of the physics, if your wheel is straight you go faster, when you turn you scrub off speed. Can't comment on ICR2 but i do remember racing at dega loosing speed in turns. -- TIM "Calm Down" WHEATLEY. The Homemade HondaFreek! Visit the Honda Homepage ! http://members.xoom.com/TimWheatley/ or E-Mail the HondaFreek !
drbo.. 08 Aug 1999#484766
The NASCAR guys were doing the same thing at Indy this year, maybe not quite as pronounced. 1-2 car widths off the wall down the straights. bob
Quoted text (14 lines)>>When I was at the Indy time trials, I noticed the the cars drifted >>away from the wall on the front stretch, then darted back to the >>outside to make the turn. >>I was curious about that Was there some aerodynamic reason that the >>car wouldn't handle well right by the wall? The NASCAR boys almost >>always keep the car up against the wall on the superspeedways >>(Michigan, Darlington). So why don't Indy cars? > The NASCAR guys were doing the same thing at Indy this year, >maybe not quite as pronounced. 1-2 car widths off the wall down the >straights. > bob
I've watch the NASCAR guys do it at Daytona, Talladega and Indy. I believe they do it to break the draft though. It never seems to work though, because the train behind them always seems to follow.

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