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).
Graph showing gear ratios for O and Q Marles-Weller gears at various rocker shaft positions.

Identifier  ExFiles\Box 28\2\  Scan065
Date  5th May 1934
  
O AND Q MARLES - WELLER GEARS
GEAR RATIOS AT VARIOUS POSITIONS FROM MID POSITION OF ROCKER SHAFT

GEAR RATIO
18
17
16
15
14
13/1

1 5/8" PITCH
1 3/8" PITCH

POSITION OF ROCKER SHAFT FROM MID POSITION
MID POSITION

10°
15°
20°
25°
30°
35°

5.5.34
C8/67
  
  


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