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 and their statuses for Kestrel and Merlin 'C' engines.
| Identifier | ExFiles\Box 30\3\ Scan160 | |
| Date | 17th April 1935 guessed | |
| ITEM. (7) DESIGN POSITION. KESTREL ENGINE. Adaption of Hobson automatic boost control. In hand. Modification to holding down clamps - six stud cylinder block. Completed. Two speed supercharger - alternative roller clutch. Completed. Modified cylinder block - clamped liner - for 14 mm. sparking plugs. Completed. Modified throttle stops and slow running adjusters to prevent petrol leaks - pressure carburetter. Completed. Fixed pitch airscrew hub for testing V.P. blades. In hand. Testing rig for Bexite oil seal for V.P. airscrew. Completed. MERLIN "C" I. ENGINE. Supercharger drive - modified fixing for rear layshaft bushes. In hand. Hub for wooden airscrew. Completed. Modified dual petrol pump. In hand. Mod. to gearbox - electric starter. Completed. Crankcase modifications - larger oil drain holes through front walls, etc. Completed. | ||