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).
Confirming no objection to making the .025' spark plug gap setting a standard practice.
| Identifier | ExFiles\Box 71\3\ scan0462 | |
| Date | 30th September 1927 | |
| To Mx.{John H Maddocks - Chief Proving Officer} from Hs.{Lord Ernest Hives - Chair} c. to BY.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} X8970 Hs{Lord Ernest Hives - Chair}8/LG30.9.27. RE. SPARKING PLUGS. With reference to Mx{John H Maddocks - Chief Proving Officer}7/T27.9.27. The Expl: Dept: have for a number of years run all the cars with plugs set .025" for battery and magneto. We were under the impression this was production practice, but we can say definitely there is no objection to it becoming standard practice. Hs.{Lord Ernest Hives - Chair} | ||