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Viewing 9631 to 9660 of 10520
1963-01-01
Technical Paper
630184
R. H. Vansteenkiste
This paper discusses the inherent advantages of disc brakes and highlights the design approach to disc brakes for American automobiles. A description of the details of the specific design are given, along with test results which show that the disc brake system advocated is superior to the drum brake system currently being used on American cars. Some advantages are greater stability, negligible fade, less water effect, and no roughness.
1963-01-01
Technical Paper
630181
V. E. Gough
Conventionally, tires are made with cross-bias cases. In Europe, however, there is increasing interest in other constructions that enable vibration characteristics to be chosen to suit the vibration transmission characteristics of the vehicle. Since construction is an important factor in controlling tread wear, an estimate must be made when initial information about vibration is available, so that unprofitable designs will be given low priority. This paper summarizes the nondestructive techniques used in estimating tread wear resistance of various tire constructions, both in the laboratory and on the drawing board.
1963-01-01
Technical Paper
630508
Albert Brunner
1963-01-01
Technical Paper
630509
Harold E. Fuerst
1963-01-01
Technical Paper
630517
A. F. Weber
Truck tire constructions are the basic foundation supporting the various tire designs and features in modern high speed trucking service. This paper discusses present and new materials used in truck tires. The performance of reduced ply tires with higher strength cord materials is also discussed. An evaluation of tubeless truck tires compared to tube type, recently made by a large commercial fleet, is reviewed. The Duplex tire is evaluated based upon current service applications and the effect of road crown on duals versus singles.
1963-01-01
Technical Paper
630518
E. H. Wallace
Three new synthetic rubbers, polyisoprene, polybutadiene, and ethylene polypropylene are compared with natural rubber and SBR with respect to their properties in truck tires. Both quality and processing characteristics are covered. Some economic factors and possible future usage are discussed.
1963-01-01
Technical Paper
630519
C. W. Adams
This paper presents general information regarding the scope of the retreading industry, a brief description of the “conventional” method of retreading and repairing truck tires, and the equipment and materials used in the process. Mention is also made of four special systems used in retreading, retread building, or tread rubber extrusion.
1963-01-01
Technical Paper
630504
R. A. Goepfrich
1963-01-01
Technical Paper
630375
J. E. Kennedy, K. W. Levien
Vehicle suspension systems are normally analyzed under the assumptions that structural flexibility is unimportant and suspension system components display linear characteristics. These assumptions may be justifiable in most instances but will sometimes give completely erroneous results. The responses of the Minuteman Transporter-Erector to an artificially roughened test course have been calculated, using structural flexibility and suspension system nonlinearities. The nonlinear flexible analysis maximum responses agreed with test results within the test scatter band. The results show that the nonlinearities and flexibilities of the system are required in the analyses in order to determine realistic responses.
1963-01-01
Technical Paper
630414
M. A. Wilson
The record of the tire industry is one of great technical progress, with tires as produced today providing high performance, durability, safety, and customer value. In this paper the author refers to the most important advancements made in recent years with new and improved materials, rubbers and textiles, advancements in tire design and construction methods. Specific examples of recent important major trends in passenger car, truck, and earthmover types of tires are given.
1963-01-01
Technical Paper
630419
W. J. Crake
High capacity alone in a suspension system will neither protect the vehicular structure nor its cargo unless it has the adequate amount of dynamic travel and the proper degree of nonlinear damping. Nonlinear spring rate and nonlinear damping seem to offer the most practical method of reducing the damaging effects of road shock and vibration.
1963-01-01
Technical Paper
630464
David Sinclair, W. F. Gulick
This paper is concerned with an extensive study of torque transfer in braking, with the objective of developing a test dynamometer capable of providing reliable data for the design of automotive brakes and brake linings. The studies discussed here show that, because of torque transfer, the four brakes of an automobile are not usually in balance. The factors that cause this transfer cannot be adequately represented in a single brake dynamometer and the dual brake dynamometer is offered as a new tool in brake testing that can be used advantageously in correlating road and dynamometer tests and may even provide more reliable test data than can test cars.
1963-01-01
Technical Paper
630030
C. L. Knighton, R. J. Marshall
1963-01-01
Technical Paper
630051
Charles E. Robertson
This paper deals with tire contributions as effecting the mobility of wheeled ground vehicles. It presents information and data requirements for military tires and the performance of two new tires available to the military - - the low profile tire and the radial tire. Testing data associated with all phases of mobility prove that both these tire concepts, and possibly a combination thereof, will prove attractive as future military hardware.
1963-01-01
Standard
J843_196301
This SAE Recommended Practice establishes a uniform procedure for the level road test of the brake systems of new light-duty trucks and new multipurpose passenger vehicles up to and including 2700 kg (6000 lb) GVW and all classes of new passenger cars. The purpose of the test code is to establish brake system capabilities with regard to: a. Deceleration versus input, as affected by vehicle speed, brake temperature, and usage; b. brake system integrity; c. Stopping ability during emergency or inoperative power assist conditions; d. Water recovery characteristics.
1963-01-01
Technical Paper
630516
D. H. Carson
The evolution of the trucking industry has set a distinctive pattern in requirements for tire traction. Permanence of nonskid design is a desirable goal that must be achieved without compromise in the treadwear potential, and should be adopted in a form that acknowledges the importance of tire noise. New design concepts, currently under development and in limited production, offer attractive gains in power consumption, with some compromise to other characteristics of tire performance. This paper discusses these innovations as they apply to traction, noise, and fuel economy.
1963-01-01
Technical Paper
630150
Walter H. Metcalf
A semiempirical theory of tire behavior is derived for the purpose of analyzing side force produced when a tire, steered to a constant angle, is subjected to a periodically vaying load, including the case wherein the tire leaves the ground. The theory may be used to predict side force as a function of loading frequency, rolling velocity, oscillation amplitude, average load, inflation pressure, and slip angle. Because parameters are derived from measured forces on the tire, results are essentially independent of tire size. Therefore the analysis may be extended to predict the dynamic performance of full-size automobile tires.
1962-11-30
Standard
ARP597
This document recommends supplementary design criteria to enhance the endurance reliability of transport aircraft wheels and brakes.
1962-11-01
Magazine
1962-11-01
Standard
J840_196211
This SAE Recommended Practice covers equipment and procedures for qualification of bonded brake shoe and lining assemblies and for quality control on materials and processes used in their manufacture.
1962-09-01
Magazine
1962-05-01
Magazine
1962-04-01
Magazine
1962-02-01
Magazine
1962-01-01
Technical Paper
620594
W. B. Hansel, M. A. Lindeman, W. D. Preston
1962-01-01
Technical Paper
620400
R. T. VanDerveer, D. L. Hittler
Sixteen vehicles, representing four different power-to-weight ratios, were tested over the California Motor Vehicle Pollution Control Board exhaust device evaluation cycle on the road and chassis dynamometer. Data are presented comparing the engine intake air consumption and the sensible heat output for both test methods. These data indicate that the cycle, as conducted on the road, requires more intake air and rejects more exhaust heat than does dynamometer operation. The difference in exhaust heat content for dynamometer operation, as compared to road operation, increases as the power-to-weight ratio increases. Increased horsepower settings for dynamometer testing are evaluated. With increased horsepower requirements it is possible to provide equivalent engine air consumption and exhaust heat approximately equal to road operation.
1962-01-01
Technical Paper
620393
J. F. Beckwith
This paper discusses a laboratory test evaluation of brake drum weight to brake drum life and describes test procedures used to measure the life of 16-1/2 in. × 7 in. brake drums. There is a direct relation of brake drum weight to brake drum life on any given application. The weight increase in brake drums to increase life has to be applied over the braking surface of the drum. The test results and procedures are covered.
1962-01-01
Technical Paper
620392
William D. Walther
In a continuing study of brake drum life it was found that both design and chemistry are major factors in developing better performance. Under test conditions, centrifugally cast composite drums gave better performance than static cast drums for the same weight. A direct relation also was ob served between brake drum life and brake drum weight. However, the optimum weight has not been established yet to get maximum brake drum life. Important factors affecting life of cast iron brake drums are hardness, alloy composition, and structure of cast iron. The alloying element chosen should produce a structure that is nearly 100% pearlitic, free from carbides, and a random dispersion of flake graphite.
1962-01-01
Technical Paper
620525
J. W. Kinchin
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