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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 status report on single-cylinder and general engine research projects.

Identifier  ExFiles\Box 30\4\  Scan335
Date  25th June 1935
  
(6)
DESIGN POSITION.
ITEM
SINGLE CYLINDER AND GENERAL RESEARCH.

Single cylinder sleeve valve unit - modified cylinder and pancake head. Put aside.
Battery ignition/and distributor unit for aero engines. In hand.
Aero universal single cylinder unit - ramp head - Kestrel. In hand.
-do- -do- cylinder block to suit ramp head - Kestrel. In hand.
-do- -do- ramp head with inlet side sparking plug. In hand.
Stressing of single cylinder unit connecting rods. Completed.
Kestrel single cylinder unit - stiffened crankcase. In hand.
" " " detachable cyl. block. In hand.
P.V.G. In hand.
Single cylinder liquid cooled Exe with enlarged porting. In hand.
Indicator valve for Farnboro' indicator. In hand.
P.V.12 single cylinder unit - mods. to inlet plug adapter & port. Completed 24.6.35
P.V.12 " " sketch of cleaned up inlet ports - cross firing ramp head. " 25.6.35
P.V.12 " " "6.5 to 1 compression ratio piston with conical crown - Merlin 'C'. In hand.
Aero universal single cyl.unit - Conical crown piston Merlin "D". In hand.
  
  


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