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).
The correct fittings for sparking plugs on F.11 engines.
| Identifier | ExFiles\Box 35\3\ scan 181 | |
| Date | 7th November 1927 | |
| [Redacted] C. Hs.{Lord Ernest Hives - Chair} [Redacted] #37 X4196 BY/EL.3/MLJ 7.11.27. F.11 ENGINES - SPARKING PLUGS. Further to our BY/EL.1/MLJ.1.11.27, regarding the fitting of the Chater Lea Terminal on to the champion plugs, we understand that Capt. Forsyth objects to using the knurled nut supplied with the plug. Will you please therefore, fit these champion plugs with K.3803 - Thackeray Washer and K.4308 - 2 B.A Nut only. BY/EL. | ||