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 failure of 'Splitdorf' sparking plugs during testing in an aero engine.
| Identifier | ExFiles\Box 37\2\ scan 069 | |
| Date | 9th July 1918 | |
| To EFC. from EH. EH3/LG9.7.18. X.3304.-"SPLITDORF" SPARKING PLUGS. These sparking plugs dropped to pieces when we ran them in an engine. They are quite unsatisfactory for use on an aero engines. EH. | ||