passive rear steer common on new cars
12-25-07, 10:57 AM
#1
passive rear steer common on new cars
The first link made me think, "Hey, that sounds exactly like the FC's dtss. Wait, what, recent years??" So I did a google search and quickly came up with the cars below. I'm sure there are plenty more. I only listed the cars that use a compliance bushing to control rear toe-in, exactly like the FC. I found other cars that also have passive rear steer by flexing other suspension parts or where the website didn't state the method, including the Acura RSX (IIRC) and some new Saab convertable. There were also the many fancy-name car makers that copied the FC's rear steer soon after it came out.
Race tech website
http://www.ozebiz.com.au/racetech/theory/align.html
2001 Honda Odyssey, on a double wishbone
http://corporate.honda.com/press/art...20010221001325
Also has something similar in the front to improve both steering response and straight line braking stability.
1991-1997 BMW E31 8-series, on a 5-link (similar to RX-8 suspension)
http://books.google.com/books?id=_AU...8wzB6aynXhsbTM
Ford Focus, on a multilink semitrailing (same basic type as the FC, but otherwise different)
http://forums.focaljet.com/suspensio...-question.html
The Mazda3 shares the same suspension. People in this thread are also complaining about how it snaps back after they lose grip.
Race tech website
http://www.ozebiz.com.au/racetech/theory/align.html
It should be noted that in recent years, designers have been using bushing compliance in street cars to their advantage. To maximize transient response, it is desirable to use a little toe-in at the rear to hasten the generation of slip angles and thus cornering forces in the rear tires. By allowing a bit of compliance in the front lateral links of an A-arm type suspension, the rear axle will toe-in when the car enters a hard corner; on a straightaway where no cornering loads are present, the bushings remain undistorted and allow the toe to be set to an angle that enhances tire wear and stability characteristics. Such a design is a type of passive four-wheel steering system.
http://corporate.honda.com/press/art...20010221001325
Also has something similar in the front to improve both steering response and straight line braking stability.
1991-1997 BMW E31 8-series, on a 5-link (similar to RX-8 suspension)
http://books.google.com/books?id=_AU...8wzB6aynXhsbTM
Ford Focus, on a multilink semitrailing (same basic type as the FC, but otherwise different)
http://forums.focaljet.com/suspensio...-question.html
The Mazda3 shares the same suspension. People in this thread are also complaining about how it snaps back after they lose grip.
