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).
From 'E' to 'HS' seeking clarification on mean pressure curves for foreign cars.
| Identifier | ExFiles\Box 32\5\ Scan160 | |
| Date | 1st May 1921 | |
| X 1692 To HS.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} E8/G31/5/21. X1692 X3317 RE HORSE POWER CURVES OF FOREIGN CARS. RECEIVED Referring to your report HS{Lord Ernest Hives - Chair}1/LG20/5@21, Mr. Royce would like to know if the curves of mean pressure give dynamometer M.E.P. which would include the losses in the transmission, and road wheels, or whether they rpresent the brake mean pressure of the engine only. E.{Mr Elliott - Chief Engineer} | ||