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).
Requesting blueprints for starter motor armature and commutator components, highlighting a potential assembly issue.
| Identifier | ExFiles\Box 64\1\ scan0161 | |
| Date | 4th December 1923 | |
| X 9620 To [REDACTED] C. EFC. BY/RD9/ML4.12.23. X.9620. RE E.A.C.1 - STARTER MOTOR ARMATURE AND COMMUTATOR. Please receive herewith 1 Blueprint of each of the following details:- D.70303 - Armature Coil. D.70254 - Nut for Armature Shaft P.E. D.70305 - Armature Stamping. D.70306 - Armature Insulation Plate. D.70307 - Winding Support C.E. D.70308 - Winding Support P.E. D.70309 - Distance Piece P.E. D.70310 - Armature End Plate. D.70311 - Wire for Armature Winding. D.70312 - Retaining Nut P.E. D.70313 - Armature Shaft. D.70323 - Slot Lining. D.70324 - Separator. D.70314 - Armature Assembly & L.O.P. D.70315 - Commutator Fixing Cone. D.70316 - Loose Commutator Cone. D.70317 - Commutator Vee Ring. D.70318 - Commutator Bar. D.70319 - Insulation Segment for Commutator. D.70320 - Oil Thrower. D.70321 - Commutator Assembly, & L.O.P. D.70322 - Insulating Bush. We would also drawn your attention to the method of connecting the armature conductors to the Commutator. We have had to drop the slot in the Commutator rather low and anticipate that a little difficulty might be experienced at this point. Will you kindly inform us accordingly. We attach also sample of Silk Tubular Sleeving which the O.O. have obtained and which we think suitable for both Armature and Field Wire. Will you please put these parts in hand. BY/RD. | ||