Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Diagrams and a graph showing resultant sliding action and relative tooth-surface rubbing velocities for spiral-bevel and hypoid rear-axle gears.

Identifier  ExFiles\Box 114\1\  scan0094
Date  11th January 1937 guessed
  
RESULTANT SLIDE
SLIDE DUE TO INVOLUTE ACTION
SLIDE DUE TO HYPOID OFFSET
Fig. 8 SHOWING THE RESULTANT SLIDING ACTION ON HYPOID PINION TOOTH DUE TO COMBINATION OF INVOLUTE ACTION AND HYPOID ACTION
Fig. 9 RELATIVE TOOTH-SURFACE RUBBING VELOCITIES FOR SPIRAL-BEVEL AND HYPOID REAR-AXLE GEARS
Graph Details:
Y-axis: HEIGHT ABOVE PITCH CIRCLE - INCHES (APPROXIMATE), DEPTH BELOW PITCH CIRCLE - INCHES (APPROXIMATE)
X-axis: RUBBING VELOCITY - FEET PER MIN.
Labels: Top of TOOTH, SPIRAL BEVEL GEARS, HYPOID GEARS, PITCH CIRCLE, BASE OF TOOTH
Subtitle: Relative Tooth-Surface Rubbing Velocities for Spiral-Bevel and Hypoid Rear-Axle Gears.
  
  


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