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Ausco-Lambert brakes were introduced in late 1948 and used commercially in some Chrysler cars and some Farmall tractors. The 1950 Crosley Hot Shot is often given credit for the first production disc brakes but the Chrysler Imperial actually had them first as standard equipment at the beginning of the 1949 model year. [1]
Unlike the caliper disc, the Ausco-Lambert utilized twin expanding discs that rubbed against the inner surface of a cast-iron brake drum, which doubled as the brake housing. [6] The Ausco-Lambert disc brake was complex, and because of the expense, the brakes were only standard on the Chrysler Imperial Crown through 1954 and the Town and Country ...
On automobiles, disc brakes are often located within the wheel A drilled motorcycle brake disc. The development of disc-type brakes began in England in the 1890s. In 1902, the Lanchester Motor Company designed brakes that looked and operated similarly to a modern disc-brake system even though the disc was thin and a cable activated the brake pad. [4]
The Chrysler 4-wheel disc brake system was more complex and expensive than Crosley's, but far more efficient and reliable. It was built by Auto Specialties Manufacturing Company (Ausco) of St. Joseph, Michigan, under patents of inventor H.L. Lambert, and was first tested on a 1939 Plymouth.
The 1974 Imperial was the first regular American passenger car to offer 4-wheel disc brakes since the 1949–1954 Chrysler Imperials, the 1950–1952 Crosleys and the 1965-on Chevrolet Corvettes. The "by Chrysler" script was removed from the car for 1974. The Imperial's electronic ignition system was a U.S. market first, as was the optional car ...
New single-piston disc brakes replaced the more complex 4-piston units offered from 1965 to 1972. Chrysler's new electronic ignition system was standard equipment on all engines, and starter motors were revised for faster engine cranking. The K-frame was modified to accommodate a new spool-type engine mount that limited engine roll to 3°.
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Crosley introduced several "firsts" in American automotive history, including the first affordable, mass-market car with an overhead camshaft engine in 1946; the first use of the term 'Sport(s-) Utility' in 1947, for a 1948 model year convertible wagon; and the first American cars to be fitted with 4-wheel caliper type disc brakes, as well as ...