Backbone chassis

Automotive chassis based on a central structural tube / From Wikipedia, the free encyclopedia

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Backbone tube chassis is a type of automobile construction chassis that is similar to the body-on-frame design. Instead of a two-dimensional ladder-type structure, it consists of a strong tubular backbone (usually rectangular in cross section) that connects the front and rear suspension attachment areas. A body is then placed on this structure. It was first used in the English Rover 8hp of 1904 and then the French Simplicia automobile in 1909.[1]

1923 Tatra 11 chassis
Cut through the rear axles of backbone chassis of Tatra 26

The backbone chassis was extensively developed by Hans Ledwinka who used it in greater numbers on the Tatra 11 and subsequent vehicles. Ledwinka later used backbone frames with central tube and axles with swinging driveshafts on Tatra trucks, becoming known as Tatra-concept.[2][1]