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 regarding the failure of 14mm spark plugs when running with Ethyl petrol.
| Identifier | ExFiles\Box 27a\4\ Scan188 | |
| Date | 23th August 1933 | |
| X1282 X Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}3/MA. August 23rd., 1933. Ronald Banks Esq., Ethyl Export Corporation, Abford House, Victoria, London, S.W.1. Dear Banks, Some of the 14 mm. plugs we are running with Ethyl petrol show signs of failure by missing on the pick up, after a few hundred miles running. Similar plugs running in France on ordinary petrol have not exhibited the same characteristics. We should like to have any information you can give us on this subject, we have sent four of the plugs back to the Makers but have two others here in case you would like to inspect them. Yours sincerely, | ||