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).
Recommending spark plug tests on an 'Eagle' engine for the Atlantic Flight.
| Identifier | ExFiles\Box 79\1\ scan0166 | |
| Date | 22th February 1919 | |
| X.601 To EP{G. Eric Platford - Chief Quality Engineer} from EH. ---------------- X.2912. X.601. X.3420. EHL/LG.22.2.19. 22nd February 1919. I should recommend that you make some tests here on an "Eagle" engine to make sure that the K.L.G. plugs are going to work satisfactorily when run 20 or 30 hours on a weak mixture. You know that R has, in the past, had strong objections and well-founded objections to single point plugs when used with a weak mixture. I consider on the Atlantic Flight when the machine has got away, the pilot will have nothing much to do, and at the same time he will be very anxious about his petrol so that he will make full use of his mixture control to keep the consumption down to the lowest possible limit. If I were you I should try an engine under these conditions with the K.L.G. plugs, if you like we can, early next week, loan you an experimental "Eagle" engine for this work. It would be a good idea, when you are away, to obtain from each concern which is going to attempt this flight, a flight chart similar to what Mr Handasyde supplied us with. Messrs. Lodge telephoned us this morning to say that they had sent off some special KR4 plugs which we had ordered. I suggest that if you run an engine you might run with 12 Lodge and 12 K.L.G. plugs and switch them off at intervals. EH. | ||