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 BHP and BMEP against RPM for Standard and Hillman engines.
| Identifier | ExFiles\Box 134\5\ scan0055 | |
| Date | 7th March 1940 guessed | |
| BHP 40 30 20 10 1267CC STANDARD 10HP 2.5x3.937 1185CC HILLMAN 2.48 x 3.74 STANDARD HILLMAN RPM 1000 2000 3000 4000 5000 BMEP 120 100 80 60 | ||