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).
Notification about a delay in dispatching a 20/25 Higher Compression Cylinder Head due to a sparking plug issue.
| Identifier | ExFiles\Box 27a\1\ Scan178 | |
| Date | 7th December 1934 | |
| +4013 W/P - Sr. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}8/KW.7.12.34. 20/25 Higher Compression Cylinder Head. We are sorry, but the despatch of this cylinder head has been delayed because we find that the standard 20/25 sparking plug is not good enough with the increased compression. All our high compression jobs are now running on 14 m/m.{Mr Moon / Mr Moore} plugs and so we have had to get some special 18 m/m.{Mr Moon / Mr Moore} plugs for this head. We hope to despatch it at the end of the week. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||