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).
Status report listing completed and in-progress design modifications for the Merlin 'F' engine.
| Identifier | ExFiles\Box 161a\4\ scan0073 | |
| Date | 9th May 1936 guessed | |
| (7) ITEM. DESIGN POSITION. MERLIN "F" ENGINE. - CONTINUED. Moderate supercharger gears (0.625 to 1 ratio). Completed 23.4.36. Modification to oil pumps - lubrication to spindle bushes. Completed 28.4.36. Clearance of carburetter in Fairey Battle framework. In hand. Superflexit petrol pipe - pump to carburetter. Completed 5.5.36. Supercharger rear half casing - additional core plugs to facilitate casting. Completed 28.4.36. Piston - 6 to 1 ratio. Completed 27.4.36. Exhaust valve guide and exhaust valve seat modifications. Completed 5.5.36. Supercharger rotor with strengthened blades. Completed 29.4.36. Pressure oil pump - additional bearing for spindle. Completed 30.4.36. Supercharger rotor with steel guide vanes. Completed 8.5.36. Modified oil pipe to facilitate assembly. Completed 7.5.36. Modification to magneto cowl distance piece. Completed 7.5.36. Pipe system for Hamilton constant speed unit. In hand. Rig for measuring end thrust on supercharger rotor. In hand. Cast conduits for ignition screening. In hand. Modified springs for inlet sparking plug terminals. Completed 11.5.36. Hardened oil pump spindles. In hand. Investigation of exhaust port areas. In hand. | ||