Steps taken to improve fatigue life of connecting rods in small high performance 2-stroke cycle engines are outlined.Design and surface treatments to improve the life of conrod bolts are covered, and the design of the cracked joint for minimum stress in the bolts is derived. Optimum case-core ratio at the conrod joint for maximum strength and good break characteristics is worked out.The hazards of rough spot face surfaces, out-of-square bolts, tight threads, insufficient or too much initial bolt tightening torque are shown. The inadequacy of shot peening in some cases and metallurgical and forging defects are also discussed.Steps taken to improve fatigue life of connecting rods in small high performance 2-stroke cycle engines are outlined.Design and surface treatments to improve the life of conrod bolts are covered, and the design of the cracked joint for minimum stress in the bolts is derived. Optimum case-core ratio at the conrod joint for maximum strength and good break characteristics is worked out.The hazards of rough spot face surfaces, out-of-square bolts, tight threads, insufficient or too much initial bolt tightening torque are shown. The inadequacy of shot peening in some cases and metallurgical and forging defects are also discussed.Steps taken to improve fatigue life of connecting rods in small high performance 2-stroke cycle engines are outlined.Design and surface treatments to improve the life of conrod bolts are covered, and the design of the cracked joint for minimum stress in the bolts is derived. Optimum case-core ratio at the conrod joint for maximum strength and good break characteristics is worked out.The hazards of rough spot face surfaces, out-of-square bolts, tight threads, insufficient or too much initial bolt tightening torque are shown. The inadequacy of shot peening in some cases and metallurgical and forging defects are also discussed.
Improving the Fatigue Life of Connecting Rods in Chain Saw Engines
Sae Technical Papers
1967 Automotive Engineering Congress and Exposition ; 1967
1967-02-01
Conference paper
English
Connecting rods , Fatigue , Metallurgy , Bolts , Peening , Finishing
Aluminium connecting rods for car engines
Springer Verlag | 2013
|Connecting rods for V-type engines
Engineering Index Backfile | 1922
A comparison of fatigue life between two automotive connecting rods
Online Contents | 2007
|Fatigue design of sintered connecting rods
Tema Archive | 1988
|A comparison of fatigue life between two automotive connecting rods
Automotive engineering | 2007
|