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).
Pre-ignition trouble in a 25/30 HP cylinder head caused by accumulated iron chips.
| Identifier | ExFiles\Box 103\4\ scan0193 | |
| Date | 22th February 1937 | |
| To RHC{R. H. Coverley - Production Engineer}/CY. from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} d 519 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/AP.22.2.37. 25/30 HP. CYLINDER HEAD. Re. your memo RHC{R. H. Coverley - Production Engineer}/CY.8/LS.16.2.37., we note with interest your finding of an accumulated bump of iron chips found in the cylinder head upon which we had pre-ignition trouble, and that precautions are being taken to prevent this in future. This head was ordered complete from Production between approximately 20.1.37 and 27.1.37. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||