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).
Request to The Light Production Co. Ltd. to prepare 14 pistons with a .360 bump, based on piston design EW.2170.
| Identifier | ExFiles\Box 148\1\ scan0119 | |
| Date | 26th April 1939 | |
| 1256 EXPERIMENTAL DEPARTMENT. Rm{William Robotham - Chief Engineer}/CTS{C. Trot Salt - Carburation}11/JH. 26th. April, 1939. The Light Production Co.Ltd., 60/66 Rochester Row, LONDON.S.W.1. For the attention of Mr.Brooks. Dear Sirs, With further reference to our piston EW.2170. This has a .470 bump on the crown. Will you please prepare 14 pistons having a .360 bump, but similar in every other respect. It is understood of course that these should be progressed as far as the grinding stage, to await the result of the test on P.461 (split skirt). We would like you to give these a suitable number for record purposes. An official order to follow. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||