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The Chevrolet HHR (an initialism for Heritage High Roof) [1] is a retro-styled, high-roofed, five-door, five-passenger, front-wheel drive wagon [2] [3] designed by Bryan Nesbitt and launched by the American automaker Chevrolet [4] at the 2005 Los Angeles Auto Show [citation needed] as a 2006 model.
A wheel cylinder is a component of a hydraulic drum brake system. [1] It is located in each wheel and is usually positioned at the top of the wheel, above the shoes. Its function is to exert force onto the shoes so as to bring them into contact with the drum and stop the vehicle with friction. [2]
Drum brake (upper right) with the drum removed (lower left, inside facing up), on the front of a Ford Falcon Sprint A rear drum brake on a Kawasaki W800 motorcycle. A drum brake is a brake that uses friction caused by a set of shoes or pads that press outward against a rotating bowl-shaped part called a brake drum.
The four-wheel drum brakes of the previous generation were abandoned, as the third-generation G-series vans adopted front disc brakes. [ 5 ] [ 6 ] The front disc/rear drum configuration remained unchanged throughout the entire production of the model line; heavier-duty vehicles received larger brakes. [ 4 ]
Both versions used drum brakes on all four wheels until 1971, when the entire GM light truck line was fitted with front discs as standard equipment. A tachometer was optional. [ 4 ] Two transfer cases were offered: the Dana 20, available only with the manual transmissions, or the NP-205 , available with both types of transmissions.
Later, disc brakes were used for the front and drum brakes for the rear. However disc brakes have shown better heat dissipation and greater resistance to 'fading' and are therefore generally safer than drum brakes. So four-wheel disc brakes have become increasingly popular, replacing drums on all but the most basic vehicles. Many two-wheel ...
The Chevrolet Corvair is a rear-engined, air-cooled compact car manufactured and marketed by Chevrolet over two generations between 1960 and 1969. A response to the Volkswagen Beetle, [1] it was offered in 4-door sedan, 2-door coupe, convertible, 4-door station wagon, passenger van, commercial van, and pickup truck body styles in its first generation (1960–1964), and as a 2-door coupe ...
As the S-cam rotates, the two symmetrical brake pads are forced against the brake drum until the pressure is released and the brake pads return to their resting position. [ 3 ] The principle of the S-cam allows the brakes of big vehicles to be more compact and less moving parts, since it only relies on a rotating shaft.