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).
Performance comparison graph for Twin Zenith versus standard chassis carburettors on the 'Japan' engine with various camshafts.

Identifier  ExFiles\Box 13\2\  02-page073
Date  22th May 1930
  
TWIN ZENITH CARBURETTER ON "JAPAN"
COMPARISON WITH STD CHASSIS CARBURETTER.
ZENITH USED WITH 26 m/m CHOKES - SMALL BORE INDN PIPE - 112° & 116° CAMSHAFTS - 5.25/1 COMPn RATIO. OPEN EXHAUST.
V869
B.H.P.
B.M.E.P.
R.P.M.
TWIN ZENITH 112° CAMSHAFT
TWIN ZENITH 116° CAMSHAFT
STD CHASSIS CARB 116° CAMSHAFT
STD CHASSIS CARB 112° CAMSHAFT
112° TWIN CARBS.
116° TWIN CARBS.
112° 20HP CARB.
116° 20HP CARB.
Aeh
22-5-30
  
  


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