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).
Letter to The Lodge Sparking Plug Co. Ltd. regarding the failure of spark plugs due to overheating and requesting different insulators.
| Identifier | ExFiles\Box 162\6\ img023 | |
| Date | 13th December 1921 | |
| X4425 Hs{Lord Ernest Hives - Chair}4/LG. 13th. Dec. 1921. The Lodge Sparking Plug Co.Ltd., R U G B Y. Dear Sirs, Referring to your AMW/MAW of the 5th.inst. The failure of the 6 plugs which we have returned to you was due to pre-ignition caused by the over-heating of the plugs themselves. We should be pleased to receive further plugs from you with different types of insulators. Yours faithfully, P.S. We have today received 6 more sparking plugs. | ||