4 Wheel Steering!!!!!!!!!

  • Thread starter HKS_T51KAI
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I was mucking around, buying any cars, and one of the toyotas turned up, Forgot name, but it clearly stated 4WS ,so i tested the theory behind this. I never really knew that 4ws existed in GT series, untill this happened. I knew some cars had it in real world, namely skylines gtr but it seems they didnt input in the game. Some test i took was salom course and driving in circles. It was clear that they really had input 4ws in some cars, if you pay attention to rear of car when doin circles, you'll notice to some degree that the rear toes out bit. Just wanted to share this, seems that GT4 still has some suprise in it.:cheers:
 
Sounds fun. I outta try this. Is the handling better? I figure a 4WS car would handle better than a 2WS car. Maybe they are testing that for MT trucks in the next GT? That'd be fun.
 
Please remove the unecessary (and rather childish) exclamation marks from the thread title.

Yes, we know four-wheel-steering is implemented by GT4, and yes the Nissan Skyline GT-Rs from 1989 onwards use SUPER-HICAS four-wheel-steering, which GT4 does, in fact, model pretty accurately.

DE
 
GT-R's, some Celicas, Mitsu 3000GT and Galant VR4 have it, and few others too. 4WS was predicted to be big hit in the late 80's/early 90's, but it also brought more weight, more complicated sytem > expensive to keep it running, not to mention that early systems weren't bulletproof.
 
hmm, we need pictures... Lemme see if i can fing something :dopey:

First thing noticed: the r33 skyline GT-R Vspec, doesnt either have 4ws, or GT4 doesnt model it, or i didnt notice it :P
Humm, i think there might be a 4ws system in the GT-R, but the movement is so small, the pictures wouldnt prove anything...
Ill try to find some other car..

Well, the 4ws is probably modelled in GT4, but i cant take a picture that would show it.
 
First thing noticed: the r33 skyline GT-R Vspec, doesnt either have 4ws, or GT4 doesnt model it, or i didnt notice it :P
Humm, i think there might be a 4ws system in the GT-R, but the movement is so small, the pictures wouldnt prove anything...
Ill try to find some other car..

Well, the 4ws is probably modelled in GT4, but i cant take a picture that would show it.
Well, I'll save you some time by saying, as I already have above, that the Nissan Skyline GT-R33 V-Spec does have four-wheel-steering, and GT4 does model it. It's not so vulgar and extreme that you can see it and take a photo of it, though... :dopey:

DE
 
wikipedia states that a 1992 rx-7 has four wheel steering. i know this not to be true.

Did the RX-7 not have a Twin Trapezoidal Link? Mazda nailed it to everything else in the 1990s.
 
wikipedia states that a 1992 rx-7 has four wheel steering. i know this not to be true.

right?
How do you know this?

The live axle of the first generation, one of the RX-7's inheritances from the RX-3, was abandoned in favor of fully independent rear suspension, using semi-trailing arms with DTSS (Dynamic Tracking Suspension System) featured a " Tri-axial Floating Hub " and an extra link to overcome the oversteer-inducilng toe-out during cornering, which was typical of simple semi-trailing arm suspension, and control the camber changes inherent in that suspension system. With DTSS, natural toe-out predominated below 0.4 g cornering force. This, in fact, helped in steering the car around turns. During harder cornering, however, the suspension load, the geometry of the links, and the calibrated bushing compliance combined to counteract the toe-out and generated net toe-in Toe-in was also created during braking, which aided stability. It was, in effect, passive 4WS.
That quote is about the '86-'91 model, but I would assume that the '92-on model would retain it. It might not be "true" 4WS, but it is 4WS none the less.
 
i was going to argue the volvo 850 does not have RWS as well, as i own one and it has a solid rear axel with a single dampener and two spring blocks. the correct term for a bushing derived toe geometery should be different than 4WS.
 
i was going to argue the volvo 850 does not have RWS as well, as i own one and it has a solid rear axel with a single dampener and two spring blocks. the correct term for a bushing derived toe geometery should be different than 4WS.

The article covers any aspect of steering involving four wheels. In fact the paragraph above the list states precisely what you say about variable geometry rear suspension.

And the MX-3 should be on the list too.
 
MX-3 should be on the list too.

it is recognized by wikipedia as the predecendant technology of the RX-7.

i suppose the two mods actively trying to correct me have a point. i still dont think that this suspension linkage qualifies as 4WS. its more along the lines of variable camber and toe.

4WS affects the turning path at low speeds. bushings only warp geometry under heavy load conditions.. mechanical operation versus inherant characteristics
 
there's active system and passive system, isn't there? and I have old Top Gear episode where they test FC RX-7 and Porsche 9whatever it was, and they clearly mentioned that Mazda has 4WS.

quote from wiki:

The revised independent rear suspension incorporated special toe control hubs which were capable of introducing a limited degree of passive rear steering under cornering loads.

That would be passive system, right? And then, there's Nissan's SUPER HI-CAS, a computerized system that controls the whole event.
 
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