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Modifications of Steering Axle Cam Brakes for FMVSS 121
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1976 by SAE International in United States
Annotation ability available
The increased torque levels required on front axles of air brake vehicles to comply with the 60 miles per hour, 245 foot stopping distance of FMVSS 121 created brake packaging problems not only due to the brake assemblies being larger for a given axle weight, but due to the inclusion of antilock hardware and the larger front axles. To produce the additional torque, increased brake input power was needed, necessitating material and design changes of the basic foundation brake.
Many of these design considerations are discussed in this paper.
|Technical Paper||Calculation of Deceleration Rates for S-Cam Air-Braked Heavy Trucks Equipped with Anti-Lock Brake Systems|
CitationMarting, P., "Modifications of Steering Axle Cam Brakes for FMVSS 121," SAE Technical Paper 760845, 1976, https://doi.org/10.4271/760845.
- Bueler R. C. Falk E. J. “A Practical Approach To The Selection And Sizing Of Brakes To Meet FMVSS 121” SAE Paper No. 730198 SAE International Automotive Engineering Congress Detroit, Michigan 1973 January
- Gillespie T. D. “Front Brake Interactions With Heavy Vehicle Steering And Handling During Braking” SAE Automotive Engineering Congress and Exposition Detroit, Michigan SAE Paper No. 760025 1976 February
- Kourik J. W. “Wedge Brake Versus Cam Brakes - Theoretical Comparison” SAE Paper No. 941A National Transportation, Powerplant and Fuels and Lubricants Meeting Baltimore, Maryland 1964 October