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).
Production trial instructions and listing associated List of Operations (LOPs) for various engine components.
| Identifier | ExFiles\Box 96\2\ scan0254 | |
| Date | 11th September 1937 | |
| -2- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/AP.11.9.37 (k) LeC.5448 relief valve with springs to Rm.{William Robotham - Chief Engineer}384/5. (1) Simplified oil feed to LeC.5444. When the rush for these 2 sets have been completed, will you please follow up with 2 more sets, the latter to be in accordance with the LOPs. which have been brought up to-date as intended for Production. The trial of these, strictly adhering to the LOPs. will be very useful to know whether there are any snags before the job is in Production. The LOPs. are as follows:- Crankcase and Bearings LOP.E.89141. Cylinder Head. LOP.E.88786. Valves and Fittings LOP.E.88784. Inlet Pipes LOP.E.88801. Camshaft & Brgs. LOP.E.89167. Water Connections LOP.E.88907. Oil Fittings. LOP.E.88832. Oil Relief valves LOP.E.88798. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||