S2000 Talk Discussions related to the S2000, its ownership and enthusiasm for it.

lift-off oversteer

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Old Mar 29, 2010 | 09:52 AM
  #21  
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Originally Posted by Alphamale,Mar 27 2010, 05:35 PM
If it's an emergency, ie can not safely make it through the turn regardless of skill level, defintely going to hit something in the road, stopped traffic, an accident, straighten the car and full brake. Yes, you may go off the road but you won't slam in to other people/vehicles.

Not sure of any track books for cars, but reading " A Twist of the Throttle" really gave me a good understanding of the physics of speed and some of the two wheel techniques transfer. Like looking through the corner.
The book is called "A Twist of the Wrist" written by Keith Code. It's an amazing read. I haven't finished it yet, but it definitely helps when on two wheels, and a lot of the basic techniques of getting around the track apply to cars as well.
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Old Mar 29, 2010 | 10:47 AM
  #22  
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Originally Posted by Alphamale,Mar 27 2010, 05:35 PM
Not sure of any track books for cars, but reading " A Twist of the Throttle" really gave me a good understanding of the physics of speed and some of the two wheel techniques transfer. Like looking through the corner.
Looking through the corner is something very important for the track or street. Riding a sport bike has taught me just how important this is. There is no situation worse for a motorcyclist than being at full lean at 90% speed through a corner and then realizing there is gravel, debris or stopped traffic at the end of the corner and there is almost no way to avoid going off road or down in this situation. The same applies to pushing the S2000. Never go into a blind corner at 100% because it gives you no margin should something obstruct your lane!
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Old Mar 29, 2010 | 01:03 PM
  #23  
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Perhaps installing a rear BSK kit will give some extra control over the car when it starts to slide? Preventing the infamous bumpsteer activated fishtail? Any toughts?
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Old Mar 29, 2010 | 01:41 PM
  #24  
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Originally Posted by UMDSuzuka,Mar 29 2010, 08:46 AM
I don't see how VSA can help you with lift-off oversteer. It can only cut power to one or both rear wheels, right? How could it help in a situation like this?
what you are referring to seems to be "traction control system". 06+ models are equipped with VSA that can apply brakes to individual wheels as well...
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Old Mar 29, 2010 | 02:04 PM
  #25  
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Originally Posted by B serious,Mar 29 2010, 12:09 PM
As far as I know, VSA is just a traction device that's active mostly on acceleration. I don't think it's like the corvette system which applies braking to specific points to reduce oversteer or understeer...and I don't think it's like an active yaw control. I think it's just to prevent wheel spin and on throttle oversteer.
That is incorrect. VSA is a full on Electronic Stability Control system. It DOES have yaw sensors and the ability to cut power and to independantly brake each wheel.
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Old Mar 29, 2010 | 02:08 PM
  #26  
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quoted from wiki,

"Snap oversteer is the propensity of a vehicle to spin dramatically during a turn (usually unexpectedly). This is most common with mid-mounted engine, rear wheel drive (MR) vehicles. Mid-mounted engine vehicles have a much lower rotational inertia than a vehicles with a front mounted or rear mounted engine. The lower rotational inertia of mid-mounted engine vehicles causes the vehicle to spin much faster than a front or rear mounted engine vehicle. Snap oversteer if unexpected can catch the driver off guard when cornering, ultimately leading to loss of control of the vehicle.

Snap oversteer is induced when the throttle is lifted while mid-way through a corner, often by inexperienced drivers trying to reduce speed after braking too little. With mid-engine vehicles the rule for cornering is "slow in, fast out", rather than "fast in, slow out" for front-engine vehicles. Mid-engine cars are setup with more understeer to prevent entering corners with too much speed."

http://en.wikipedia.org/wiki/Snap_oversteer
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Old Mar 29, 2010 | 02:39 PM
  #27  
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this car isn't overly twitchy under reasonable speeds, you can brake and lift as needed wihtout too much worry. Say you take a 40 mph corner at 60 mph you can still have a margin of safety, however if you hit it at 90 mph that is where things get twitchy and you can get into trouble. The car feels safe at most reasonable speeds, if you get over your head then you can pay a price if you don't know exactly what to do.
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Old Mar 29, 2010 | 03:59 PM
  #28  
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Originally Posted by JFUSION,Mar 29 2010, 02:39 PM
this car isn't overly twitchy under reasonable speeds, you can brake and lift as needed wihtout too much worry. Say you take a 40 mph corner at 60 mph you can still have a margin of safety, however if you hit it at 90 mph that is where things get twitchy and you can get into trouble. The car feels safe at most reasonable speeds, if you get over your head then you can pay a price if you don't know exactly what to do.
Depends on what you personally consider to be a "reasonable speed"

Some may think that taking a curve marked as a 20 mph curve at 30 is reasonable. Some might think taking the same curve at 45 is reasonable. 45 mph may be too hard to lift mid corner, 30 may not be hard enough to cause problems.

I guarantee that your mother, wife or girlfriends don't feel that your driving is as reasonable and controlled as you do.
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