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 modifications for the Kestrel and Merlin 'F' engines.
| Identifier | ExFiles\Box 161a\4\ scan0072 | |
| Date | 11th May 1936 | |
| ITEM. (6) DESIGN POSITION. KESTREL ENGINE. Mod. to adaptation of Schwarz blades to R.R. Hele Shaw hub. In hand. Mod. to R.R. Hele Shaw airscrew hub to facilitate machining. In hand. Modified tachometer drive to suit Air Ministry revised standards. Completed 11.5.36. Six stud cylinder modification:- more metal between valve seats and main studs. Completed 29.4.36. Centering sleeve for airscrew assembly - "V" serrated shafts. Completed. Cylinder construction - screwed in liner and split bottom joint - semi floating liner. Completed. 2 speed supercharger - instruction sheet - roller clutch inner member bearing clearance. Completed 28.4.36. Modified crank ring - Hele Shaw V.P. airscrew. Completed 11.5.36. MERLIN "F" ENGINE. Supercharger rear gear housing with increased radii. In hand. Mod. to sparking plug adapter - method of locking. Completed 8.5.36. Petrol pressure gauge connection. Completed 22.4.36. Modified inlet spark plug connection. Completed 1.5.36. Magneto controls to suit latest type Hobson boost control. Completed 28.4.36. Modified tachometer drive to suit Air Ministry revised standards. Completed 22.4.36. Supercharger rotor, integral guide vanes with radiused tips. Completed 22.4.36. Adaptation of oil relief valve to suit Hamilton Const.Speed Unit Operation. In hand. | ||