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).
Instruction sheet for Falcon engine tests, detailing valve timing for best power.

Identifier  ExFiles\Box 36\2\  scan 053
Date  22th August 1917
  
R.R. 6 (500 7-17) (SD 747 22-8-17) MP 181926
X2984
ROLLS-ROYCE LIMITED.
INSTRUCTIONS.
To Falcon Tests. 191
Order No._________
Customer's No._________
Valve timing for best power at 2200 R.P.M.
A side: with no feeler beneath tappet (# .012" clearance when cold)
inlet opens 1 1/8" after mark
" closes 1/4" before mark
B side
inlet opens 1 1/16" after mark
" closes 1/2" before mark
Both sides gave within 1 H.P. of each other when tested separately.
Signed_________________
This Sheet must be filed on completion of the work.
  
  


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