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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).
Status report on single cylinder and general engine research items, detailing progress on Merlin, Vulture, and Kestrel components.

Identifier  ExFiles\Box 30\4\  Scan032
Date  23th October 1935
  
ITEM (6) DESIGN POSITION.

SINGLE CYLINDER & GENERAL RESEARCH.

Mods. to dynamo for aero engine battery ignition - Merlin 'E'. In hand.
Investigation of intercoolers. " "
Car universal single cylinder unit - mods to suit overhead camshaft.cylinder heads. " "
Further investigation of high compression pistons - exhaust plug ramp cylinder head - Vulture. Completed.
Flywheel end bearing, oil pump and distributor drives - 4 cylinder star unit - Vulture. In hand.
Merlin 'E' single cylinder unit - 5¾ to 1 compression ratio piston. Completed 10.10.35.
" 'C' single cylinder unit - Strengthened combustion chamber. " 16.10.35.
" 'D' single cylinder unit - Mod to combustion chamber. " 16.10.35.
Kestrel, P.V.G. & P.V.XII single cylinder units - Ball bearing on horizontal contact breaker. " 23.10.35.
Merlin 'E' single cylinder unit - modification to wall of combustion chamber. " 23.10.35.
Inlet and exhaust valve lift curves - unsymmetrical cam. Merlin 'E'. " 16.10.35.
Cylinder head investigation - Vulture. Completed.
4 cyl. star unit - Vulture - cylinder block. In hand.
" " " - Camshaft drives. (Vulture). " "
" " " - Vulture crankcase and bearings. " "
  
  


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