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 BHP and BMEP for three different induction pipe configurations against engine RPM.

Identifier  ExFiles\Box 66a\2\  scan0183
Date  29th March 1928
  
WEIR INDUCTION PIPES TESTS. SHEET I.
V252.
① INDUCTION PIPE & FISHTAIL (WITH NOZZLE) TO SCH. 965. (ONE PIECE PIPE).
HOT SPOT PIPE TO SCH. 965.
② DITTO, BUT, WITHOUT NOZZLE IN FISHTAIL.
③ STANDARD INDUCTION PIPE.
B.H.P.
B.M.E.P.
BRAKE HORSE POWER
B.M.E.P. (LBS/SQ")
R.P.M. OF ENGINE.
CONDITIONS OF TESTS:
LIGHTER PHANTOM Nọ AU25.
COMPRESSION RATIO = 4.63
STANDARD CAMSHAFT.
ANTI-DETONATING TYPE CYL. HEAD.
STANDARD CARBURETTOR.
STD. TEST BED EXHAUST SYSTEM.
HAP 29.3.28
  
  


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