How does ATRAC work??

Thai said:
All those actions ain't gonna work if you have no traction at the tires...in fact, you can even shut off the engine if you like! :D

On a more serious note, there's no need to further discuss this topic unless you have some additional info.

I hope that you found the above info helpful in reading up on VSC's.
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Again, Iowa, i was half-kidding with my comment above...please see smilie.

Please read the rest of the post...if you have more info to counter what i have said above, then please post it. If not, then this discussion should end. I feel like i am stating the same things over and over again. PLEASE read up on VSC's.

Thanks.
 
Thai said:
Again, Iowa, i was half-kidding with my comment above...please see smilie.

Please read the rest of the post...if you have more info to counter what i have said above, then please post it. If not, then this discussion should end. I feel like i am stating the same things over and over again. PLEASE read up on VSC's.

Thanks.
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Well, as a matter of fact you are stating things over and over again and I have no idea why. Your statements have no relevance to the scenario I'm describing.

I did add more info- Myself and many other drivers have done this type of control in the real world, and it works. If people have done it, why can't a control system do it?

I've yet to see an article on vehicle control systems stating this type of wheelspin control is impossible or detrimental in any way. Have you found one?
 
Iowa4Runner said:
Well, as a matter of fact you are stating things over and over again and I have no idea why. Your statements have no relevance to the scenario I'm describing.

I did add more info- Myself and many other drivers have done this type of control in the real world, and it works. If people have done it, why can't a control system do it?

I've yet to see an article on vehicle control systems stating this type of wheelspin control is impossible or detrimental in any way. Have you found one?
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Good...go out and do it to your 4runner. There's no article...hmmm...because VSC's main function is NOT for your situation. It's very simple. Go and have fun with your 4runner.
 
Iowa4Runner said:
Well, as a matter of fact you are stating things over and over again and I have no idea why. Your statements have no relevance to the scenario I'm describing.
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Are you even reading what i wrote?? Please go back and read it again...it's not rocket science, especially for someone so knowledgeable in physics! :D
 
Originally posted by Thai :headslap:
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I'll take that as a no. I guess I'm not allowed to ask that kind of thing here. :confused:

Anyway about this "discussion", I think the main problem is that the subject or content I was focusing on shifted over the course of our exchange, and you didn't follow me.

As the conversation progressed I was addressing statements like "In your situation, no system in the world will save him"

Not only is that untrue, you never gave me a reason why people can do it but a computer could not. Either you do not understand the situation I'm describing or you simply don't understand vehicle dynamics.

Telling me "it's not rocket science", "read up on VSC's", "reread what I said" is nothing more than being dismissive.
 
Iowa4Runner said:
you never gave me a reason why people can do it but a computer could not. Either you do not understand the situation I'm describing or you simply don't understand vehicle dynamics.

Telling me "it's not rocket science", "read up on VSC's", "reread what I said" is nothing more than being dismissive.
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Ok...let me make this as simple as can be:

1. I am not a Toyota engineer. Do NOT ask me WHY can't my 4runner do this or that! I can only tell you WHAT YOUR 4RUNNER CAN DO in certain situation. Again, i did NOT design your 4runner.

2. ATRAC shuts off around 40 mph. This is FACT for Land Rover and Mercedes traction control systems.

3. VSC is there to correct oversteer and understeer...as per Toyota's literature and every other manufacturer's literature.

4. Dismissive?? I am not running for a political office nor do i have any special connection to Toyota.

Now, anything beyond this, i would recommend that you stalk a Toyota engineer in Japan and ask him yourself! :D

Are we clear?? :mad:
 
You guys are funny!
Iowa have you ever driven your 4Runner with ATRAC on icy roads?

Thai just to clarify from my experience.
I haven't driven my Runner on ice yet, but in snow, mud and soft sand.
My experience have been that even when driving in a straight line, VSC dethrottles when you loose traction and it does so pretty quickly. It also modulates the brakes. This has been a source of frustration for me and lots of other people trying to get up a hill as it seems the 4Runner almost dies on you as it basically stops building momentum. This was until I figured out ATRAC still works but VSC turns of when you lock the center diff. Makes a big difference!

So Iowa the 4Runner actually does what you request.
 
a-trac works!

Guys...a-trac does work! It seems for only a brief moment like it doesn't. It stalls for a moment compared to a real locker. Gives you that sinking feeling like you will want to slam on the brakes....Give it a chance. Be aggressive. Keep RPMs up. 2K to 3K RPM. It does kick-in and lock the slipping wheels. Better then rear locker...it works on both the front and rear wheels. Go up a steep slippery slope and still retain steering!
 
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