Dubonnet suspension

The Dubonnet - spring knee is a type of front suspension for motor vehicles. This at a single link ( crank ) suspended front wheel acts through a knee- shaped lever ( hence the name knee suspension) on the suspension unit. The spring is installed in the oil-filled damper housing. Swinging the housing with the bearing is rotatably mounted on a transverse beam and is pivoted as a whole in steering. It was invented by the French engineer André Dubonnet, who himself used it in 1933, but then sold the patent to General Motors. It was used in the thirties and forties of General Motors, Fiat and others. The Dubonnetachse is sensitive to poorly balanced front wheels, they are more prone to flutter ( " shimmy " ) than other suspensions R. For Opel it was Dubonnet - spring knee along with a leaf-sprung rigid axle (with the same natural frequency of the suspension on both axles ) under the name synchronous suspension. Used in the Opel Olympia from year 1938.