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).
Table of specifications for Kestrel and Buzzard engines relevant to spark plugs.

Identifier  ExFiles\Box 58\2\  Scan036
Date  13th April 1932
  
PARTICULARS OF R.R. SERVICE ENGINE RELEVANT TO SPARK PLUGS.

ENGINE. C.R. NML.SPEED. BMEP. AT RATED POWER. ALT. AT RATED POWER. APPROVED PLUGS. REACH OF PLUG.
Kestrel 1 A.{Mr Adams} 6/1. 2250 133 3000 ft. Lodge A.2. 17.5 mm.
Kestrel 1 B. 7/1. 2250 130.4 3000 ft. " "
Kestrel M.S. 5.5/1 2250 143 2500 ft. " "
Kestrel S. 6/1. 2250 130.4 11500 ft. " "

Buzzard M.S. 5.5/1. 2000
2250 145.8 G.L. Lodge A.2.
K.L.G.663. "

Hs{Lord Ernest Hives - Chair}/Yng.13.4.32.
  
  


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