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).
Investigation into misfiring issues with the 850 plug.
| Identifier | ExFiles\Box 58\2\ Scan220 | |
| Date | 16th August 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/Wst.12/KW.16.8.35. The 850 plug has been tested in France with satisfactory results but on recent subsequent tests we had a recurrence of misfiring which we are now investigating. It may be also that the fundamental cause of the misfiring you have all experienced is not plugs, in spite of the fact that a new set apparently cured the trouble. We are now carrying out further road tests with standard plugs returned from the Repair Dept. and a set of 850's, and we will report the results of these tests later. Hs{Lord Ernest Hives - Chair}/Wst. | ||