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).
List of parts and modifications for a dynamo, dynamo drive, and revolution counter drive for the Large Bore Bentley engine.
| Identifier | ExFiles\Box 168a\3\ img229 | |
| Date | 26th September 1935 | |
| C. Hs{Lord Ernest Hives - Chair}/Wst. WST r6142. BY/RD2/W.26.9.35 LARGE BORE BENTLEY. DYNAMO.DYNAMO DRIVE AND REVOLUTION COUNTER DRIVE. Loc.s 4686 and 4708. Please receive herewith blue prints and information to enable dynamos for large bore Bentley engine to be put in hand. No L.O.P.s are issued at this moment, and in the following instructions we have utilised standard production material and altered same as far as possible. Section 8070. Dynamo Armature. Section 8090. Dynamo Commutator. A standard Dynamo Armature and Commutator Complete to D.54538, should be modified in accordance with:- DB.{Donald Bastow - Suspensions}1099. Modifications to Armature Assembly. DB.{Donald Bastow - Suspensions}1091. Fan. 1 off. DB.{Donald Bastow - Suspensions}1093. Sunwheel and Shaft. 1 off. DB.{Donald Bastow - Suspensions}1094. Lock Washer. 1 off. DB.{Donald Bastow - Suspensions}1095. Lock Nut. 1 off. DB.{Donald Bastow - Suspensions}1096. Coupling Flange. 1 off. Section 8100. Frame and Fld.Winding. D.54345 standard production. Section 8080. Bearing Brackets. DB.{Donald Bastow - Suspensions}1079. Bearing Bracket, C.E. 1 off. DB.{Donald Bastow - Suspensions}1081. End Cover. 1 off. DB.{Donald Bastow - Suspensions}1082. Bearing Bracket, Tacho. Drive. 1 off. DB.{Donald Bastow - Suspensions}1083. Annulus Wheel. 1 off. DB.{Donald Bastow - Suspensions}1084. Idler Wheel Support. 1 off. DB.{Donald Bastow - Suspensions}1085. Idler Wheel. 2 off. DB.{Donald Bastow - Suspensions}1086. Locking Plate. 1 off. DB.{Donald Bastow - Suspensions}1087. Thumb Nut. 2 off. DB.{Donald Bastow - Suspensions}1088. Cover for Ball Bearing. 1 off. DB.{Donald Bastow - Suspensions}1089. Oil Retainer. 1 off. D.54594. Bearing Bracket, Driving End. 1 off. A pattern for this piece is already in existence, and prints are issued to you for this experiment with Alteration 4685/D.added. DB.{Donald Bastow - Suspensions}1090. Assembly of Cover. 1 off. Further, the following pieces will be required, blue prints of which should be available:- D.54542. Frame for Gauge. 1 off. ( Contd :- | ||