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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 development status for Merlin F/1 and G engines.

Identifier  ExFiles\Box 161a\4\  scan0134
Date  22th September 1936
  
ITEM. (8) DESIGN POSITION.

MERLIN F/1.ENGINE.

Mod. to ignition wire conduits - to use Lodge spring loaded nut. Completed 22.9.36.
Thread mod. to Hele Shaw blade and adaptor. " 22.9.36.
Keyed washer for locking tab - lower camshaft drive. " 22.9.36.
" " " " - electric starter bevel cross shaft. In hand.
Modified roller bearing - upper vertical drive. Completed 11.9.36.

MERLIN ENGINE - FUTURE DEVELOPMENT.

Hele Shaw airscrew - pump and governor unit. Completed 22.9.36.
Claudel Hobson carburetter - arrangement of controls. " 19.9.36.
" " " - oil connections. " 19.9.36.
Lightened engine - Magnesium air compressor drive housing D.4593. In hand.
" " - Magnesium R.A.E. compressor housing. In hand.
" " - Magnesium oil filter cap. Completed 22.9.36.
Mod. to fuel pump - morganite bushes. " 15.9.36.

Modified

MERLIN "G" ENGINE.

Hele Shaw airscrew - layout of oil pipes. In hand.
Mod. to cylinder head to clear breather. Completed 5.9.36.
Mod. to rocker cover and cylinder head - to clear cowling rail. In hand.
Mod. to induction pipe, to give more clearance for set screws. Completed 15.9.36.
  
  


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