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).
Instruction to fit a new set of pistons to a Bentley engine unit.
| Identifier | ExFiles\Box 97\5\ scan0350 | |
| Date | 12th June 1939 | |
| 450a To HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux}16/JH.12.6.39. 7.B.V. - Bentley. Engine unit No.2. Will you please fit a set of 6.5 : 1 .200" raised crown pistons supplied by Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} to replace the existing 7.1 pistons. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} | ||