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).
Record of acceleration tests for vehicle 19-EX.

Identifier  ExFiles\Box 11\4\  04-page096
Date  11th July 1932
  
ACCELERATION TESTS. 19-EX.        11.7.32.

Blois - Orleans road.    Tarmac surface.    Conditions, no wind.
Carburetter needle 90°.    Valve timing I/O.{Mr Oldham} 1.86°    B.T.D.C.
            I.C. 46.88°    P.B.D.C.
            E.C. 4.85°    P.T.D.C.
            E.O. 54.4°    B.B.D.C.

E.82448 Camshaft -
long duration, high lift -
114° between cams.

Duration of cam,
Inlet 228.7°
Exhaust 239°.

M.P.H.        IN.        OUT.        AVERAGE.
10 - 20        4.8    5.0    5.4    5.6    5.2
20 - 30        5.0    5.0    5.0    4.8    5.0
30 - 40        5.4    5.2    5.2    5.2    5.2
40 - 50        5.8    5.8    6.2    5.8    5.9
50 - 60        7.0    7.4    6.8    6.6    7.0
60 - 70        10.0    10.0    10.4    10.8    10.3
70 - 80        18.0    18.2    17.2    17.4    17.7    <- 50/70

70-80                            20.4
  
  


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