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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).
'Eagle' engine's epicyclic gear floating sun wheel bush scheme, including part numbers and an assembly sketch.

Identifier  ExFiles\Box 37\4\  scan 159
Date  15th May 1917
  
To Mr Hills from BY/ST.{Capt. P. R. Strong}
a.{Mr Adams} to M.{Mr Moon / Mr Moore}
c. to Mr Clark.
c. to Wor.{Arthur Wormald - General Works Manager} for Mr Coverley.

BY/ST23/DB{Donald Bastow - Suspensions}15517.
May 15th, 1917.

RE "EAGLE" ENGINES - EPICYCLIC GEAR - FLOATING SUN WHEEL BUSH SCHEME. - X.3047.

Please receive herewith the following details in connection with the above:-

G.5850/1 - Sun Wheel (Port and Starboard).
G.5852 - Sun Wheel Bush.
G.5853 - Ring for Retaining Bush.

Will you please instruct up one set of these parts, to be fitted to the first available experimental engine, for test under the above X number.

One of either G.5850 or G.5851 is required but not both.

The retaining ring is kept in the sun wheel, as shown in the sketch hereunder:-

[Sketch showing three stages of fitting a retaining ring into a sun wheel and bush assembly]

Handwritten text on sketch:
SUN WHEEL
RETAINING RING
BUSH.
STAGE No I. BEFORE ROLLING OVER EDGE X
STAGE No II. X ROLLED OVER
STAGE No III CLEANED OFF FLUSH WITH TEETH
DO NOT DISTORT TEETH.
BY/ST.{Capt. P. R. Strong}
  
  


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