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59
59: After World War II, Chrysler designed a high-
speed truck using some concepts from automotive
technology. The Chrysler C-5E truck had lateral-
motion rocker arms connecting its side frames and
bolster, and snubbing was provided by a tubular
hydraulic shock absorber. It worked well but cost
more and required periodic maintenance, so it was
not adopted in large numbers.
60-62: High capacity freight cars were often equipped
with six-wheel trucks. Here are three from early in
were especially designed for the cars they were used on, and
none were made in large numbers. Some examples of those
trucks were the ASF, Lewis, and Lamont trucks (60, 61, and 62).
60
Freight Car Trucks - 22
(60-62 continued) the 20th century, the ASF, Lewis, and
Lamont trucks, all designed for 100-ton coal hoppers
and gondolas. None were produced in large numbers.
62
In the 1920s, a small number of high-capacity flat cars began
to be built to carry very heavy industrial loads, and these cars
also required special heavy duty trucks. Cars of 90 tons nominal
capacity usually had four-wheel trucks (63 and 64). Cars with 100
ton or higher capacities used six-wheel trucks (65 and 66). In a
few extreme cases, two four-wheel trucks connected by a mas-
sive span bolster were used at each end of the car (67).
Early roller bearing trucks
Roller bearing trucks existed earlier than many modelers real-
ize; the Stafford Roller Bearing Car-Truck Corporation intro-
duced a roller bearing arch bar truck in the early 1920s (68).
Those early roller bearings were costly and did not wear well,
61
index contents
MRH-May 2013