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« on: April 26, 2007, 01:23:43 pm »
From 1989 -1999 there were 3 models of Skyline GT-R produced. The R32, R33, and the R34. Each features the RB26DETT engine, ATTESA E-TS all wheel drive system, and Nissan's Super HICAS four wheel steering system.
From 1991 -1997 the Skyline was undefeated in N1 endurance racing in Japan, winning 50 times.
looks like it works for some
here is what wikpedia has to say
[edit] Four-wheel steering
[edit] The system
Four-wheel steering (or all wheel steering) is a system employed by some vehicles to increase vehicle stability while maneuvering at high speed, or to decrease turning radius at low speed.
In most four-wheel steering systems, the rear wheels are steered by a computer and actuators. The rear wheels generally cannot turn as far as the front wheels.
Sports cars sometimes include four-wheel steering for stability at high speeds. When performing an abrupt lane change at highway speeds, for example, a car with four-wheel steering will avoid rear suspension loading common in two-wheel steering cars. Because the rear wheels steer in the same direction as the front wheels, the car is transitioned more gently into turning.
Alternatively, several systems, including Delphi's Quadrasteer and the system in Honda's Prelude line, allow for the rear wheels to be steered in the opposite direction as the front wheels during low speeds. This allows the vehicle to turn in a significantly smaller radius — sometimes critical for large trucks or vehicles with trailers.
[edit] Recent application
All four wheels turn at the same time when you steer. There are controls to switch off the rear steer and options to steer only the rear wheel independent of the front wheels. At slow speeds (e.g. parking) the rear wheels turn opposite of the front wheels, reducing the turning radius by up to twenty-five percent, while at higher speeds both front and rear wheels turn alike (electronically controlled), so that the vehicle may change position with less yaw, enhancing straight-line stability. The "Snaking effect" experienced during motorway drives while towing a caravan is thus largely nullified. Four-wheel steering found its most widespread use in monster trucks, where maneuverability in small arenas is critical, and it is also popular in large farm vehicles and trucks.
General Motors offers Delphi's Quadrasteer in their consumer Silverado/Sierra and Suburban/Yukon. However, only 16,500 vehicles have been sold with this system since its introduction in 2002 through 2004. Due to this low demand, GM will not offer the technology on the 2007 update to these vehicles.
Previously, Honda had four-wheel steering as an option in their 1988-1994 Prelude, and Mazda also offered four-wheel steering on the 626 and MX6 in 1988. Neither system was very popular, in that whatever improvement they brought to these already excellent-handling vehicles was offset by an unavoidable decrease in sensitivity caused by the increased weight and complexity.
Some vehicles (like Peugeot 306) offer a form of "passive" four-wheel steering, where the bushings by which the rear suspension attaches to the automobile are designed to compress in a precise direction under the forces of steering, thus slightly altering the rear suspension geometry in such a manner as to enhance stability.