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).
Design position report for Merlin, Kestrel, and Vulture engine components.
| Identifier | ExFiles\Box 161a\4\ scan0124 | |
| Date | 1st September 1936 | |
| ITEM (12) DESIGN POSITION. MERLIN "H" ENGINE CONTINUED. Exhaust valves and seats - 1.475"dia.30°seat flexible type thickness .140. Completed 21.8.36. " " " " - 1.475"dia.45°seat flexible type thickness .140. " " Exhaust valve .500 dia. stem - valve head to DES.3151 - 40% less than standard quantity of sodium. " 31.8.36. Exhaust valve and seat - flexible type - large dia.- .500 dia.stem and venturi type strengthened seat. In hand. KESTREL XXVI ENGINE. Preliminary investigation into revision of undercarriage, petrol and water pump drives. Completed. Preliminary installation diagram. Completed 1.9.36. Wheelcase and drives. In hand. Supercharger and drive. In hand. VULTURE ENGINE. Crankcase. In hand. Reduction gear design. In hand. Engine attachments to framework. In hand. Airscrew shaft. In hand. | ||