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).
Blueprint graph of engine performance tests from Brooklands showing BHP and MEP against RPM.
| Identifier | Morton\M9\ img011 | |
| Date | 1st August 1931 | |
| 12 GIV BROOKLANDS TESTS AUG. 1931 R.M.27 CHINA UNIT 112° SHAFT CO OPEN HIGH LIFT ROCKERS S .65 C/R 14-50 AXLE RATIO S.U. H.V. 5. CARB. STD 15% LARGER B.H.P. M.E.P. INDUCTION DEPN. INS. HG. NO HOT SPOT THRO BLOCK CARB SIDE OF BLOCK RPM M.P.H. 76.62 MPH 73.45 MPH | ||