Plasma Pong is great.
Could something like that in a more simple way be possible anytime soon? (In race sims)

I thought he meant that the part of the tire that touches the road is initially spining slower then the hub without slip between hub/tire because of the flexible tire wall.

Thx for explanation Shotglass \/

Last edited by RedQuad, Sun 10 Jun 2007, 00:39.

Quote from Forbin :

I stopped watching a third of the way through when A) the guy said they're using the Pacejka formula and B) he apparently thinks longitudinal slip is when the wheel hub is rotating faster than the tire.

Isn't that true? ---> 0:47 http://www.youtube.com/watch?v=9O0b90G8Yhg

I dont want to start a flame war or something like that, I really just want to understand car physics as I notice it's getting more and more important as a hobby for me.

BTW Plasma Pong is a real eye-candy

Last edited by RedQuad, Sun 10 Jun 2007, 00:35.

In the end you just see what they want you to see....

Quote from ZzeCoOl :

Point me where exacly do i sound as an idiot?

Don't call F1 cars limited. Call drift setups limited.

Quote from ZzeCoOl :

In the other hand in nascar or F1 drifting make you slow cause of the style of the race and and limitations of the car setup and tyres setup + Computers software assistance witch prevent you from oversteering (traction control) moslty for the health ensurance of the driver

Quote from frokki :

Of course drifting is faster if you haven't got enough lateral grip (obviously drift setups are made to reduce grip) and have to compensate it with longitudal traction to get around corners. That's exactly why pre-war GP cars and today's rally cars drift.

http://www.lfsforum.net/showth ... ht=drifting+lateral+drift

Quote from deggis :

I think in the driving school classes, they should keep showing picture series of crash aftermaths until half of the people on the class throws up. Should be more efficient than repeating "speeding/drunk driving is not ok". Something like this: http://fnnc.org/drunk-driving.html

I absolutely agree with you. Everybody that wants to get a license should be confronted with possible results of irresponsible driving.


The surgeons did do an admirable work of art considering the circumstances.

I just wanted to point out that it's not really exaggerated.
But it really depends on your point of view what a shocking crash might be though.
If you experiences death and tragedy on a daily bases you start to qualify(?) things that are actually unbelievable for others. That's the only way to cope with such experiences.

Last edited by RedQuad, Wed 9 May 2007, 17:02. Reason : +such

Quote from sgt.flippy :

At this point the advert is already working though, people are talking about it and it's interesting to do so. Of course it's exagerated, but I kinda support this kind of adverts, would be better though if it was footage from real life crashes, or aftermaths.

The music is theatrical, so it seems exagerated.
But the accident itself wasn't that serious and surely not exagerated.. 2 Dead people and 1 disabled... Worse thing's happen almost daily.

Yes that's exactly the point. He is not really reading those numbers.
You could compare it to whistling a tune, or playing a song on the piano.

I just wrote a paragraph and erased it again, because of the language barrier. My English is certainly good enough to buy chips&fish in Brighton but not to explain neural architecture in a precise adequate way.
Nevertheless I'll try to answer with analogies at my best.

Quote from Jakg :

What. The. FUNK?!

That's impressive - could you sum up how the hell he did it? meine Deutsch ist nicht so gut!

Well he obviously calculates first and then verbally "prints" the result.
He speaks faster the further he comes, but it seems like he doesn't memorize the single numbers, they are more kind of "appearing" in front of his "mental eyes".

The theory is that he trained a part of his secondary cortex to be a dedicated calculator.

I just found a french/german documentary about the human brain that I watched quite a long time ago.

I am still so impressed by what I just saw, although I learned a lot about neurology since I watched it for the first time.

Even though it's German you'll be astonished by that guy that solves the equation 62/167 = X.

http://www.youtube.com/watch?v=hj4-QbTpPO4

Just watch the first minute.

Quote from dawesdust_12 :

I think that if the LX8 did come in, it should be competible with the GTR class, and look like this:
http://www.switchimage.com/phl ... hlog_Donkervoort_6021.jpg

After looking through a pile of "Sport Auto" magazines, I found the article about the Donky.

Weight: 760kg (fueled)
BHP: 398


Price: 150k Euro

small Hockenheimring
Düchting Donkervoort D8 RS:1.04,8 min
Koenigsegg CCR: 1.09,8 min
Porsche Carrera GT: 1.08,6 min

Last edited by RedQuad, Wed 25 Apr 2007, 19:19. Reason : grammar

Quote from geeman1 :

desiel is so hard to spell too

lol its diesel fyi

Quote from goode400 :

The dashboard is right behind my wheel and the next bend is 300 meters away through a wide bright hole in my living room.

http://www.vision3d.com/stereo.html

Quote from nihil :

is a workable way of (1)reproducing the way we see, at the same time, this doesn't make image and reality interchangeable.

It is still a framed 'image', except now the (2) framing device becomes the limited amount of information that the image can contain. While, theoretically, the real world is finite in its content too, it will be a long, long time before any mechanical image is able to replicate the resolution of reality.

(1)You are not reproducing the way you see, you are feeding your brain with an adequate stimulus for depth perception.

(2)You have to distinguish 3D perception and the level of detail of an image.

Quote from DragonCommando :

If the world was the same way the glasses worked it would look like a video game when you shut one eye, it doesn't because the world is 3d, the monitor's screen doesnt change shape to make up the objects so it is still a perspective trick.

Edit: and I don't care if you are the smartest person on earth.

Well I am not that smart, but I am smarter than you when it comes to the human body.

In fact if you shut one eye you loose your ability of stereoscopical depth perception.

That's the reason why some animals have their eyes in the front of their faces. Because they need to guess distances.

Last edited by RedQuad, Thu 5 Apr 2007, 19:48. Reason : biological part

Quote from nihil :

Perception is a rather different and more involved process than just the mechanics of seeing.

The mechanics of stereoscopic seeing is the based on 2D perceptions.
You don't want to start argueing with me about neuronal integration of these information.

Quote from DragonCommando :

I still think you'r not getting what I'm saying, The real world is 3d, no matter what each eye sees it as.

your monitor image is FLAT no matter what each of your eyes see.

You can not get the same depth with an imageing trick as you can with the real world.

If you had the glasses you'd see it, some things still seem flat, they just look layered with gaps in between, thats all.

I don't have them, but I' heard alot about them. Don't get me wrong they work, but they still can't give you that true 3d realisim that you experiance every day. No matter the detail of the game, it's still rendered as a flat image.

First of all: You are wrong, I am right.
This is because you got an opinion about that topic and I have profound knowledge.

If you take a look around in the REAL WORLD EACH EYE JUST SEE'S FLAT IMAGES. Period.

Quote from DragonCommando :

You are still tricking your mind into beliving the image it is seeing is actualy 3d, all it is doing is sending one flat image to one eye and another to the other eye. The image from your monitor is still flat, it just renders two different angles and shows one to one eye and the other to the other eye.

So it still isn't truly 3d.

Obviously you didn't get the point..

Take a look @ your hand.
The images that are projected onto your retinae are flat!
Your eyes are just capable of sensing flat images.
Your eyes can't see 3D pictures.
3D perception is presented to your mind by certain brain structures not by your eyes.
Your mind "see's" what your brain show's it.

Quote from DragonCommando :

I know, thats what I'm trying to make clear.

all the system does is trick your brain into thinking you have one perspective per eye coming from the monitor, your brain then does it's job.
Turning the two images into one.

It's still not true 3d because the world you look at is actualy 3d, but on the monitor it is still just two flat images.

Every second of your life your brain is "tricked" into thinking that you have one perspective for each eye....

Quote from nihil :

If I move my head, what I see of the monitor changes, but the image on the monitor does not necessarily change in the same way. The image may be skewed a little, but it will reveal nothing more than it did before I moved my head.

Well put 2 little display's infront of each eye, use a driver that renders 2 different perspectives, use a Track IR like system and there you go!

Last edited by Bob Smith, Thu 5 Apr 2007, 21:27. Reason : learn to multiquote

In other words: the physiological input of an eye is a flat image!

Quote from DragonCommando :

It is a trick though, just because the rendering engine renders "3D" it doesn't mean it is realy 3d, it's still displayed as a flat image.

the only thing that is realy 3 dimentional is the data it uses to render (X,Y,Z cords), the output is flat.

I am studying medicine, so you should believe me.

While you take a look around in your room each of your eyes senses flat images that are interpolated in the occipital lobe of your brain. Those images show the same thing from a slightly different angle.

[Edit: spelling]

Last edited by RedQuad, Wed 4 Apr 2007, 22:37.

Quote from DragonCommando :

Well technicaly it isn't 3d, because the objects still arn't actualy rendered in true 3d, its more of a perspective trick.

Well technicaly it is 3D, because the objects are rendered in 3D.
Thats what every game engine does if it uses polygons etc...

The 3D perception is CREATED in your brain. Each eye just "sees" a 2D image of a slightly different angle.

There is no need to argue about that topic.

Its no trick it, it IS true 3d

Quote from DragonCommando :

We are along way from getting true 3d display, but we can somewhat fake it with special hardware.

https://edimensional.com/index.php?cPath=21

That's not faked 3D.
It is real 3D, as real as every other visual perception in real life.

http://www.donkervoort.de/# like to have that one...