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The truck flywheel power takeoff has proven itself as a reliable means of supplying continuous power to a variety of mounted equipment. The features of available units are described in detail in an effort to provide the design and application engineer with complete information regarding their function and application, and to stimulate expanded usage of this constant power source.

A foundation of highway truck ride and cab suspension historical evolution is laid describing the influence of marketplace demands, highway conditions, and government laws. Ride quality test methods are revealed along with variables tried and conclusions drawn. These data and techniques are then used to design cab suspension systems for a new line of truck products including both conventional and COE cabs.

Product design cycle time can be significantly reduced with the utilization of Computer Aided Engineering. (CAE) techniques. Computer modeling and analyses can eliminate portions of the lengthy procedure required by traditionally accepted Product Development Methods. This paper examines and compares a CAE application to a conventional method in the redesign of a structural component of a heavy-duty truck. The procedures to achieve design objectives: Modeling through stress analysis iterations and verification of analyses by prototype testing will be addressed together with the impact of such approach on cost and quality of engineering.