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 future developments for the Merlin 'F' engine.
| Identifier | ExFiles\Box 161a\4\ scan0064 | |
| Date | 22th April 1936 guessed | |
| (6) DESIGN POSITION. ITEM. MERLIN "F" ENGINE. - CONTINUED. Mod. to sparking plug adapter - method of locking. In hand. Cylinder head and induction pipe - undrilled bosses deleted. Completed 7.4.36. Cylinder studs and tubes - cap nuts fitted and tubes deleted. Completed 8.4.36. Piston 6 1/2 and 6 to 1 ratio - scallops for inlet valves deleted. Completed 8.4.36. Strengthened driving shaft - R.A.E. compressor. Completed 8.4.36. Modified coolant return pipe - carburetter to pump. Completed 22.4.36. Oil pipe for dual petrol pump. Completed 17.4.36. Stiffened quill shafts - R.A.E. compressor and Lockheed pumps. Completed 16.4.36. Petrol pressure gauge connection. In hand. Modified tachometer drive to suit Air Ministry revised standard. Completed 21.4.36. Modified inlet spark plug connection. In hand. 6 to 1 ratio piston with scallops on inlet side only. Completed 22.4.36. Magneto controls to suit latest type Hobson boost control. In hand. MERLIN - FUTURE DEVELOPMENT. Controls and pipe work for Hobson carburetter. In hand. Screening and controls for battery ignition. Completed 18.4.36. Pancake head cylinder with screwed in liner. In hand. | ||