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).
Progress report on single cylinder and general research items, including work on Aero Universal, Kestrel, P.V.XII, P.V.G, and Exe engines.
| Identifier | ExFiles\Box 30\4\ Scan003 | |
| Date | 5th September 1935 guessed | |
| ITEM. (7) DESIGN POSITION. SINGLE CYLINDER AND GENERAL RESEARCH.(CONT'D) Aero Universal Single cylinder unit - coolant outlet from Inlet side of head - Merlin 'D'. Completed 27.8.35. Kestrel single cylinder unit - 8 to 1 compression ratio piston. Completed 30.8.35. P.V.XII single cylinder unit - inclined lower half crankcase 30° inclination - Merlin 'E'. Completed 27.8.35. Kestrel single cylinder unit - oil spray to big end - top half crankcase. Completed 27.8.35. Kestrel single cylinder unit - crankshaft with additional balance weights. Completed 28.8.35. Investigation of highest compression ratios which can be used on existing cylinder heads. Completed. P.V.G. single cylinder unit - piston for profile testing. Completed 29.8.35. P.V.G. single cylinder unit - strengthened cylinder liner. Completed 29.8.35. P.V.G. single cylinder unit - shortened balance weights for long skirt pistons. Completed 28.8.35. Liquid cooled Exe single cylinder unit - modification to allow cylinder to be rotated. Completed 27.8.35. P.V.XII single cylinder unit. Pocketed inlet side sparking plug - Merlin 'E'. Completed 2.9.35. P.V.XII single cylinder unit - Modified front end oil seal - Merlin 'E'. In hand. Aero universal single cylinder unit - Duralumin push rod - Merlin 'D'. Completed 5.9.35. | ||