Rolls-Royce Archives
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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 the status of modifications for Merlin, Buzzard, and Goshawk aero engines.

Identifier  ExFiles\Box 30\3\  Scan171
Date  17th April 1935 guessed
  
ITEM (sheet 8) DESIGN POSITION.

MERLIN "D" ENGINE.
Alternative pent house roof cylinder heads. In hand.
Alternative crankcase construction. In hand.

BUZZARD ENGINE.
Oil pipes for automatic mixture control. In hand.

GOSHAWK "B" ENGINE.
Increased layshaft centres supercharger drive 10:1 ratio. In hand.
Electric turning gear. In hand.
Alternative cylinder construction - separate steel jackets. In hand
Modified centre main bearing cap. Completed.
Lightened strap type connecting rod. Completed.
Mods. to two speed supercharger. Completed.
Cyl.head - modification to stud position. Completed.
Modifications to crankcase. In hand.
Two speed supercharger - investigation of alternative gear ratios. In hand.
  
  


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