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 a verbal arrangement to change the spark plug gap for a 20/25 HP chassis with battery ignition.
| Identifier | ExFiles\Box 54\5\ Scan323 | |
| Date | 2nd June 1930 | |
| X5680 EFC. {E. Fowler Clarke - Electrical Engineer} absent Hs {Lord Ernest Hives - Chair} /AJL. from EFC {E. Fowler Clarke - Electrical Engineer} /HEW. EFC {E. Fowler Clarke - Electrical Engineer} /HEW4/AD2.6.30. X.5680. 20/25 HP. BATTERY IGNITION. This is to confirm our verbal arrangement with you to run a 20/25 chassis with opened out plug gaps. A gap of .030" instead of .025" (std.) would, we suggest, be suitable. EFC {E. Fowler Clarke - Electrical Engineer} /HEW. | ||