Inboard brake

Inboard brake

An inboard braking system is an automobile technology wherein the brakes are mounted so as not to contribute to the vehicles unsprung weight. Inboard brakes are by definition always used on axles that have independent suspension. For the driven wheels the brakes are usually mounted to the differential casing. For non-driven wheels a dedicated brakeshaft is required to link the wheel to the inboard brake. Moving the brakes inboard reduces unsprung weight substantially, improving ride, handling and braking. Aerodynamics and brake cooling are also affected, giving the designer greater options. This system was more common in the 1960s, found on such cars as the Jaguar E-Type and Citroën 2CV. The Hummer H1 is one of the few modern vehicles fitted with inboard brakes, although this addition was apparently to accommodate the Hummer's unusual gear-drive system used at each wheel.

Cars with inboard brakes

* Alfa Romeo Alfasud Alfetta GTV GTV6 Giulietta 75 90 SZ Milano
* Audi 100 LS
* British Racing Motors: Some BRM racing cars had a single inboard disk brake, acting on both back wheels.
* Citroën 2CV, DS, GS, SM and Axel
* Jaguar E-Type
* Jaguar XJ (until XJ40)
* Jaguar XJ-S
* Hummer H1
* Lancia Aurelia
* Lotus 72 Formula One racing car
* Lotus Elite, Elan and Esprit
* Mercedes-Benz W196 and 300SLR
* Rover P6
* DKW Junior plus other models
* Subaru G
* Oltcit

ee also


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