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 detailing the status of modifications for Kestrel and Merlin F/1 engines.
| Identifier | ExFiles\Box 161a\4\ scan0155 | |
| Date | 29th October 1936 | |
| (10) ITEM. KESTREL ENGINE (CONTINUED) DESIGN POSITION. Oil pipe clip mod:Hele Shaw and Hamilton V.P.airscrews. Completed 8.10.36. Arrangement of Schwarz Heleshaw V.P.airscrew. Completed. Modification to cylinders - isolated combustion chambers. Completed 20.10.36. Inner bearing race modification - Heleshaw airscrew. Completed. Adaptation of Hamilton "D" shank airscrew. Completed 29.10.36. Redesigned oil pipe - Hamilton V.P. airscrew. Completed 23.10.36. MERLIN F/1 ENGINE. Extra studs in rocker cover and cylinder head. Put aside. Exhaust plug shield. Put aside. Mod. to cylinder head - locking of exhaust flange studs. Put aside. Two position control for Hamilton pump valve. Completed. Increased range of adjustment for Hele-Shaw blade. Put aside. Mod. to cylinder head - blind bosses in exhaust flange. Completed 22.9.36. Keyed washer for locking tab - electric starter bevel cross shaft. Completed 23.9.36. Adaptation of oil relief valve to suit Hele Shaw constant speed unit operation (also G & H).Completed 8.10.36. Airscrew shaft mods. to suit American 20° brackets. Completed 29.9.36. Modified clip for coolant pipe - to prevent leakage. Put aside. | ||