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 the effect of various tappet clearances on a Peregrine engine's BHP and BMEP against RPM.

Identifier  ExFiles\Box 1\8\  B001_X100 Engine Chassis-page193
Date  29th June 1932 guessed
  
COMPARISON OF VARIOUS TAPPET CLEARANCES. RM{William Robotham - Chief Engineer} PR7
PEREGRINE 105.5° CAMSHAFT
1 5/8 S.L. 5.85 C/R OPEN EXHAUST PLUG REACH .950
VALVES DIAL AND LIFT AS ON RM{William Robotham - Chief Engineer} PR5
.020
.015
.004 & .006
B.H.P.
R.P.M.
B.M.E.P. Lbs/sq"
IN
EX
17
31
40
.020 CLCE
  
  


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