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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).
Blueprint detailing the valve hole for a 3.62 inch rim, part RSO549.

Identifier  ExFiles\Box 159\3\  scan0099
Date  29th September 1939
  
COPIED OR RE-ISSUED WITHOUT OUR PERMISSION
3.62" ± .063"
3.62" RIM R.S.0549.
CHAMFER AT 45°
1/32 DEEP AT ℄
DETAIL OF VALVE HOLE
1/64 R.{Sir Henry Royce}
28°
.504"/.514" DIA.
.450"
APPROVED 3.10.'39.
DESIGN SHEET C171.
SCALE:- 1/1 & 2/1
LIMITS - ON UNLIMITED DIMENSIONS +- .005" FOR DECIMAL FIGS. & +- 1/64" FOR FRACTIONAL FIGS.
DRAWN: HR
TRACED:
CHECKED:
DATE: 29.9.'39 A.M. APP. DATE
D.M.C.
TITLE:- VALVE HOLE FOR 3.62" RIM. RSO549.
ISSUE No:
MODIFICATION:
COMPONENTS & MATERIAL SPEC. REF:
DUNLOP RIM & WHEEL CO., LTD., FOLESHILL, COVENTRY.
DRAWING No CDO3498.
  
  


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