[DeTomaso] <detomaso at realbig.com>Re: Oversteer/Understeer

[Gray Gregory]

I suppose, or more likely a driver that had no clue what he was doing! Add to that a car that was way over his head and that's what you end up with. 

 

________________________________

From: Ken Green [mailto:kenn_green at yahoo.com] 
Sent: Wednesday, August 29, 2007 2:04 PM
To: Gray Gregory; Mark McWhinney; Göran" Malmberg; detomaso at realbig.com
Subject: Re: [DeTomaso] <detomaso at realbig.com>Re: Oversteer/Understeer

 

When Eddie Griffin crashed the Enzo at Irwindale, what does the video show?  A lot of understeer and a driver who froze?  

 

http://cbs2.com/topstories/local_story_085210942.html

 

Ken

Gray Gregory <rgg at gregorycook.com> wrote:

	You got it. This will also work at almost any point (prior to actually hitting something) whereas even if the driver knows how to properly catch and over-steer he must react pretty fast or the car will spin anyway.
	
	That's why almost every road car is set up to under-steer.
	
	
	-----Original Message-----
	From: Mark McWhinney [mailto:msm at portata.com] 
	Sent: Wednesday, August 29, 2007 12:46 PM
	To: Gray Gregory; 'Göran Malmberg'; detomaso at realbig.com
	Subject: RE: [DeTomaso] Re: Oversteer/Understeer
	
	>> For safety reasons I think the manufacturers prefer a road car that is
	set up to under-steer from your lateral acceleration standpoint because the
	driver input required to correct for under-steer is to simply add more
	steering input and reduce speed. This is more intuitive for the average
	driver and thus less likely to end in an accident.
	
	
	It's human nature to hit the brakes when you carry too much speed into a
	curve. The braking shifts the car's weight toward the front which increases
	grip on the front tires and decreases grip at the rear. In an under-steer
	situation, braking decreases under-steer, so under-steer tends to be a
	self-correcting problem even without steering inputs. In an over-steer
	situation, braking adds more over-steer causing a snap spin to the inside of
	the curve where there is on-coming traffic.
	
	
	
	
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