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 and blueprint list for 20 HP Chassis Intermediate Output Dynamos.
| Identifier | ExFiles\Box 165\6\ img202 | |
| Date | 3rd May 1929 | |
| X 6002. C. EFC. BY/RD14/N.3.5.29. Re: 20 h.p. Chassis Intermediate Output Dynamos. Will you please put in hand the following units:- (a) One armature and commutator complete to: Part List D.51733 Section 8070. and Part List D.51738 " 8090 (b) One complete dynamo to Part Lists: D.51738 Sec.8070 - Armature. D.50598 Sec.8080 - Bearing Brackets. D.51738 Sec.8090 - Commutator. D.50612 Sec.8100 - Frame & Field Winding. The foregoing means therefore, that two special armatures and commutators are required, and one set of standard carcase, field winding, bearing brackets, brush holders etc. Attached herewith blueprint of:- D.51733 - Armature Assembly. D.51733 - Armature L.O.P. D.51734 - Armature Winding Diagram. D.51735 - Winding Support. D.51736 - Armature End Plate. D.51737 - Armature Coil. D.51738 - Commutator Assembly. D.51738 - Commutator L.O.P. D.51739 - Commutator Bar. and for your information we would mention that the slots milled in the armature core are exactly the same size as those in the present standard 40/50 dynamo. and therefore the same cutter could possibly be used. Hs{Lord Ernest Hives - Chair} BY/RD | ||