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 graph comparing Twin Zenith and standard carburetters with 110° and 112° camshafts.

Identifier  ExFiles\Box 13\2\  02-page074
Date  11th July 1930
  
TWIN ZENITH CARBURETTER ON (JAPAN IVG6) V914
COMPARISON WITH STD CARBURETTER
ZENITH RUN WITH 26"L-CHOKES SMALL BORE INDUCTION PIPE
COMPLETE STANDARD 26HP EXHAUST SILENCING SYSTEM
STANDARD 110° AND LONG DURATION 112° CAMSHAFTS
5.25:1 COMPRESSION RATIO

BHP
RPM

Curve Labels:
TWIN ZENITH 112° CAMSHAFT
TWIN ZENITH 110° CAMSHAFT
STD CARB 112° CAMSHAFT
STD CARB 110° CAMSHAFT
TWIN ZENITH 112° CAMSHAFT
STD CARB 112° CAMSHAFT
STD CARB 110° CAMSHAFT
TWIN ZENITH 110° CAMSHAFT

Handwritten:
W.O.S 11-7-30
  
  


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