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).
Instruction to fit Champion spark plugs on F.11 high compression engines.
| Identifier | ExFiles\Box 35\3\ scan 179 | |
| Date | 11th November 1927 | |
| F.11 ENGINES - SPARKING PLUGS. We have been instructed by the Air Ministry to fit Champion plugs on all F.{Mr Friese} type high compression engines against contract 770857/27. As these plugs are not suitable for the Air Ministry type adaptor we should fit the Chater Lea terminal direct on to the plug using K.3803 Thackeray Washer and the knurled nut supplied with the plug. Will you please see that this instruction is carried out. BY/EL. | ||