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).
Letter discussing feedback on Bentley valves and their effect on engine carbon buildup.
| Identifier | ExFiles\Box 89\5\ scan0101 | |
| Date | 13th April 1940 | |
| at: Woodlawn, Page Heath Lane, Bickley. Kent. DUCKHAM HOUSE, 16, CANNON STREET, E.C.4. 13th April, 1940. TELEPHONE NO CITY 1308. AD/DET. W.A. Robotham Esq., Messrs. Rolls-Royce Ltd., Derby. Dear Mr. Robotham, Bentley Valves. My thanks for your letter of April 9th. I am much obliged to you for the trouble you have taken, and am glad to know what you think of the valves I sent you. It is interesting that garages - although they are naturally against ADCOIDS because they find they save decoking and reduce repairs in general - nearly always comment on the soft carbon and ask the reason therefor. Yours sincerely, A.{Mr Adams} Duckham. Handwritten annotation: D / 261 | ||