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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).
Parts list detailing blueprints and requirements for the Wraith III chassis dynamo drive and armature.

Identifier  ExFiles\Box 168a\3\  img123
Date  22th October 1938
  
HPS.{Horace Percy Smith - Experimental Factory Mgr}
c. Rm.{William Robotham - Chief Engineer}
c. Rm{William Robotham - Chief Engineer}/SWdl.{Len H. Swindell} 6142.
BY/Ald.{F. Allwood - Experimental Design}10/G.22.10.38.

WRAITH III. CHASSIS.

DYNAMO ARMATURE - SECTION 8070.
DYNAMO DRIVE - SECTION 5100.

Please receive herewith two blueprints of each of the following :-

S.CD.940 Flexible Coupling - Dynamo Drive.

SECTION 8070.
Ex.S.1143 Outer Flange - Rubber Block. 1 off.
Ex.S.1144 Inner " " 1 off.
Ex.S.1145 Coupling Block - Dynamo Drive. 1 off.
Ex.S.1146-50 Adj. Washer for Coupling. - 4 off to suit.

SECTION 5100.
* Ex.S.1151 Coupling Plate - Dynamo Drive. 1 off.
x Ex.S.1152 Connecting Shaft. 1 off.
y Ex.S.1153 Stiffener for Coupling Plate. 1 off.
Ex.S.1154 Coupling Plate - Dynamo Drive. 1 off.

The following parts will also be required :-

SECTION 8070.
DW.819 Dynamo Fan. 1 off.
DW.820 Coupling for Fan. 1 off.
DW.821 Bolt for Fan Coupling. 4 off.
K.4307 Nut " " 4 off.
KB.2726M Bolt for Coupling Outer Flange. 4 off.
K.4404 M Plain Washer for ..do.. 4 off.
K.9006 M Spring Washer for ..do.. 4 off.
K.4307 M Nut for Coupling Outer Flange. 4 off.

SECTION 5100.
KB.1858 Rivet for Coupling Plate. 4 off.

The following parts are not required :-

SECTION 8070.
DB.{Donald Bastow - Suspensions}1091 DC. Fan for Dynamo. 1 off.
DB.{Donald Bastow - Suspensions}1096 Coupling for Fan. 1 off.
2726 Bolt for Fan. 4 off.
" Nut for Fan. 4 off.
  
  


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