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 B.HP and BMEP against R.P.M. for two different camshaft timing configurations.
| Identifier | ExFiles\Box 102\5\ scan0122 | |
| Date | 29th February 1932 | |
| 20-25 H.P. (CHINA) UNIT 5.75:1. COMP. RATIO CAMSHAFTS. E57177 STANDARD CARB. V1319 B.H.P. % BMEP R.P.M. 110.5° 108° STANDARD ENGINE Left Diagram: TDC EX. 7 8.5° IN. 41.2° 42° BDC 110.5° Right Diagram: TDC EX. 1° 6.1° IN. 34.1° 46.3° BDC 108° C.T.S | ||