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).
Exploded view diagram of a gearbox showing gear tooth contact specifications.

Identifier  ExFiles\Box 22\4\  Scan028
Date  21th May 1935 guessed
  
NOTE - ALL MAIN SHAFT HELICAL GEAR TEETH TO BE LEANED IN THE DIRECTION TO FAVOR CONTACT SHOWN REGARDLESS OF DRAWING SPECIFICATIONS. THE REVERSE IDLER ALSO TO HAVE MODIFIED PRESSURE ANGLES TO PRODUCE CONTACTS AS SHOWN.
NOTE - ALL COUNTER SHAFT GEARS TO BE MADE TO CORRECT LEAD, PRESSURE ANGLE, INVOLUTE AND TOOTH THICKNESS AS SPECIFIED ON DETAIL DRAWINGS.
NOTE - DRIVING SIDES TO HAVE FULL CONTACT OR SHADING HEAVIER UPWARD. DRIVEN SIDES TO HAVE FULL CONTACT OR SHADING HEAVIER TOWARD BOTTOM OF TOOTH.
FORWARD DRIVING SIDE
FORWARD DRIVEN SIDE
COAST DRIVING SIDE
REVERSE DRIVEN SIDE
REVERSE DRIVING SIDE
FOR EXPERIMENTAL WORK ONLY
Part Numbers on gears: 890380, 890381, 890383, 890384, 890385, 890879, 890401
Title Block Text: CADILLAC MOTOR CAR CO. DETROIT, MICH.
PART NAME SKETCH SHOWING DIRECTION OF ROTATION AND TOOTH CONTACT
XB-65877
  
  


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