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Stability Control vs No Stability Control Question

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Old Apr 13, 2009 | 09:16 PM
  #31  
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Originally Posted by CKit,Apr 13 2009, 09:33 PM
But the Honda VSA also uses traction control, does it not? For example, you turn both on and off together... and it would kick in if you did a clutch dumping burnout, right?
Traction control is what the LSD is for.
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Old Apr 13, 2009 | 09:17 PM
  #32  
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Huh?
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Old Apr 13, 2009 | 09:56 PM
  #33  
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Originally Posted by hicabi,Apr 13 2009, 06:58 PM
That's not VSA. That's traction control. VSA corrects over-steer and under-steer. It will not engage driving in a straight line.
Are you implying that there are two systems on the late AP2s? I get full fuel-cut in first and second at WOT.
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Old Apr 14, 2009 | 05:36 AM
  #34  
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Originally Posted by CKit,Apr 13 2009, 08:33 PM
But the Honda VSA also uses traction control, does it not? For example, you turn both on and off together... and it would kick in if you did a clutch dumping burnout, right?
oh, yes it does!! ask me how i know! i was the first few to buy the new MY06, and i did not realize that it came witch VSA.
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Old Apr 14, 2009 | 08:50 AM
  #35  
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Originally Posted by CKit,Apr 13 2009, 08:33 PM
But the Honda VSA also uses traction control, does it not? For example, you turn both on and off together... and it would kick in if you did a clutch dumping burnout, right?
Precisely. Two different systems activated by the same switch, probably for simplicity.

2003 Accord LX V6, for example, come only with traction control, without VSA.

On another note, VSA is not some "fun stopper" that cuts throttle whenever... VSA primarily uses brakes, not throttle. Actually, earlier implementations of stability control (not on S2000, but other cars) worked only using brakes. However, having control of power delivery, as well as individual braking, makes the system more effective, and you safer. VSA cannot work with throttle control alone.

LSD, of course, has nothing to do with any of these systems. Torsen diff has no sensors or electronics.
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Old Apr 14, 2009 | 09:01 AM
  #36  
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I can confirm that it is possible for VSA to kick in while driving in a straight line
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Old Apr 14, 2009 | 09:34 AM
  #37  
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Originally Posted by CKit,Apr 13 2009, 10:17 PM
Huh?
Do you not understand the function of traction control? Or do you just not understand the function of a limited slip differential? Because an LSD is a mechanical traction control system. That's what it's for.
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Old Apr 14, 2009 | 09:54 AM
  #38  
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Originally Posted by mikegarrison,Apr 14 2009, 09:34 AM
Do you not understand the function of traction control? Or do you just not understand the function of a limited slip differential? Because an LSD is a mechanical traction control system. That's what it's for.
You are correct. I don't understand the function of traction control or the function of a limited slip differential.

C'mon, the type of control loss that these guys are talking about isn't really helped by a LSD. They're losing both rears together through abrupt throttle inputs.

I'm sure that there would be more spins and wrecks if we had "one-wheel drive," but since he was talking about the difference between an 05 and 06, I didn't understand your comment in that context.

But now I understand. You were being a smarty pants.

Saying: "Traction control is what the LSD is for," is similar to saying, "Traction control is what good tires are for."

Doesn't really make sense in the context of this thread, either.
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Old Apr 14, 2009 | 10:00 AM
  #39  
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Well, I thought you knew better. I guess you just didn't follow what I was saying.

But all a TC system does is brake a spinning wheel in order to transfer power to the non-spinning wheel. It's just trying to replicate what an LSD does, without any of the mechanical disadvantages of an LSD.

I guess it might cut throttle, too, which is something an LSD can't do.

But mainly when cars have "traction control" it is just a means of replicating the function of an LSD in a car with an open diff. Most Honda vehicles have an open diff, so TC helps them out a lot more than it does an S2000.
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Old Apr 14, 2009 | 10:05 AM
  #40  
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Originally Posted by mikegarrison,Apr 14 2009, 10:00 AM
But all a TC system does is brake a spinning wheel in order to transfer power to the non-spinning wheel. It's just trying to replicate what an LSD does, without any of the mechanical disadvantages of an LSD.

I guess it might cut throttle, too, which is something an LSD can't do.
Disagree. Traction control can function only cutting the throttle, while VSA gauges yaw and direction and brakes individual wheels (not just the spinning one) to keep the car turned in the direction that the steering wheel is pointed.
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