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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).
Comparative list of the number of engine parts for the Wraith and Phantom III models.

Identifier  ExFiles\Box 8\6\  06-page28
Date  16th May 1938
  
S/T 619
Rm{William Robotham - Chief Engineer}/Cr.{Mr Cra???ster / Mr Chichester}6/MH.{M. Huckerby}16.5.38.

WRAITH AND PHANTOM III ENGINE PARTS.

Number of parts on Wraith and Phantom III engine by sections showing number common to both units. These figures do not include any stock parts under K numbers, or rubber, bakelite or vellumoid parts.

P.III. Wraith III. Common to both.
Crankcase & Bearings. 14b 79 7
includes
liners & block.
Crankshaft 22 20 3
Spring Drive 30 26 4
Connecting Rod 16 8 1
Piston 8 6 0
Cylinder 25 37 (includes 1
cyl.block)
Valves & Fittings 31 25 10
Inlet Pipes 22 13 0
Carburetter (parts made by Rolls-Royce). 80 20 9
Carb., Air Silencer 16 26 2
Camshaft 18 18 0
Dynamo Drive 25 23 2
Water Pump Drive 5 5 1
Idler Gear 11 0 0
Ignition Gov. and Drive 27 6 1
Cross Drive Shaft 12 0 0
Water Pump 23 19 14
Oil Pump 16 13 4
Wheelcase & Fittings 11 4 1
Cont'd.{John DeLooze - Company Secretary}
  
  


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