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).
Spark plug options and a note on their performance in different car models.
| Identifier | ExFiles\Box 72\1\ scan0070 | |
| Date | 30th October 1925 guessed | |
| --2-- Memorandum No. 8659. He has decided, therefore, to get in touch with me or with Hm.{Capt. W. Hallam - Head Repairs} should he get further trouble with the Bosch plugs and the K.L.G's which he means to try, and Hm.{Capt. W. Hallam - Head Repairs} should therefore carefully note the position. NOTE: Sir Albert Bingham remarked, as a curious fact, that after removing the present standard plugs which oiled up in his "New PhantomCodename for PHANTOM I" and giving them a most thorough cleaning, he tried them in his old Pre-War Rolls-Royce, where they were no good at all. (Sgd) H.{Arthur M. Hanbury - Head Complaints} | ||