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RR layout. In automotive design, an RR, or rear-engine, rear-wheel-drive layout places both the engine and drive wheels at the rear of the vehicle. In contrast to the RMR layout, the center of mass of the engine is between the rear axle and the rear bumper.
This layout is typically chosen to improve the traction or the handling of existing vehicle designs using the rear-engine, rear-wheel-drive layout (RR). The R4 layout is very rare, only having been used on a small number of production vehicles. Notable vehicles with this layout include several high-performance Porsche sports cars, including the ...
In automobile design, a rear-engine design layout places the engine at the rear of the vehicle. The center of gravity of the engine itself is behind the rear axle. This is not to be confused with the center of gravity of the whole vehicle, as an imbalance of such proportions would make it impossible to keep the front wheels on the ground.
The rear-engine, four-wheel drive layout (abbreviated as R4) places the engine at the rear of the vehicle, and drives all four wheels. This layout is typically chosen to improve the traction or the handling of existing vehicle designs using the rear-engine, rear-wheel-drive layout (RR).
RMR layout; the engine is located in front of the rear axle. Rear Mid-engine transversely-mounted / Rear-wheel drive. In automotive design, an RMR, or rear mid-engine, rear-wheel-drive layout is one in which the rear wheels are driven by an engine placed with its center of gravity in front of the rear axle, and thus right behind the passenger compartment.
A front-engine, rear-wheel-drive layout (FR), also called Système Panhard [1] [2] [3] is a powertrain layout with an engine in front and rear-wheel-drive, connected via a drive shaft. This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the pre-1950s automotive mechanical projects. [ 4 ]
The wayward handling of rear-engine, rear-wheel drive cars has been documented at least since Wehrmacht officers in occupied Czechoslovakia were ordered not to use Tatras as staff cars. Probably the most notorious car with this layout, the Chevrolet Corvair publicized by Ralph Nader's book Unsafe At Any Speed , initially recommended ...
Engine configuration: Speaking about the Dauphine's rear-engine, rear-wheel-drive layout, Renault's Fernand Picard said in a paper he delivered in 1957 that the car was part of a rear-engine trend led by Volkswagen, Fiat and Renault whereby the rear drive/rear engine configuration had increased from 2.6 percent of continental western Europe's ...