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 Brooklands tests comparing Road Wheel Horsepower and speed for two different engine configurations.
| Identifier | ExFiles\Box 5a\5\ 05-page138 | |
| Date | 19th June 1931 | |
| SHEET II H.S. 400 G.S.D. BROOKLANDS TESTS 19/6/31 LAP SPEEDS C.O. CLOSED 18 GII 68.7 M.P.H. G.S.R.14 63.2 M.P.H. ROAD WHEEL H.P. C.O. CLOSED 18 GII 35.7 CWTS JAPAN UNIT C.R. 5.25. PT SILENCER TWIN ZENITH 26 M.M. CHOKES 112° CAMSHAFT C.O. CLOSED Top Diagram: T.D.C., EX, IN, 11°, 49° Bottom Diagram: EX, IN, 10°, 43°, 34° G.S.R. 14 33.7 CWT CHINA UNIT C.R. 5.25 17% LARGER R.R. CARB C.C. CLOSED 110° SHAFT EX. SYSTEM ARREST. C. 55° & 94° STD CHINA Graph Curves: 18 GII, G.S.R.14 X-AXIS: R.P.M., ROAD SPEED M.P.H. | ||