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 status report on modifications for the Kestrel and Merlin 'F' engines.
| Identifier | ExFiles\Box 161a\4\ scan0063 | |
| Date | 22th April 1936 | |
| (5) ITEM. 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. Adaptation of Negretti & Zambra capsule unit and extra lubrication - automatic boost control. Completed 21.4.36. Arrangement of airscrew oil pipes - R.R.Heleshaw V.P.airscrew. Completed 22.4.36. Investigation into adaptation of Kay V.P. Airscrew. Completed. Simplified scheme for Hobson mixture control - on lines of Farnboro mock up. Completed. Modified tachometer drive to suit Air Ministry revised standards. In hand. MERLIN "F" ENGINE. Modification to dual petrol pump. Completed 2.4.36. Adaptation of variable datum boost control to give increased boost for take off. Completed 21.4.36. Modified connecting rod bolts to prevent twisting. Completed 31.3.36. Mod. to rear camshaft bearing - increased end clearance for spur gear. Completed 9.4.36. Lightened slipper gears 8.588 ratio. Completed 3.4.36. Supercharger rear gear housing with increased radii. In hand. External vent for supercharger bearing and modified position of drain cocks. Completed 21.4.36. Cylinder liner - radius added at junction of bore and bottom chamfer. Completed 7.4.36. | ||