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).
Specification for a starter motor for the 16-EX model, with modifications for the ERC-7.
| Identifier | ExFiles\Box 64\1\ scan0265 | |
| Date | 10th December 1926 | |
| X7620 C. EFC. BY/RD5/ML10.12.26. E.A.C.V11 - STARTER MOTOR FOR 16-EX. Referring to EFC2/T1.1226, wherein it is requested that the "C" Motor for ERC-7 be similar to the "A" motor except that the field will be wound 2 Parallel and 2 Series, we now send you herewith blue-prints of:- D.71246 - Frame and Field Winding Arrgt: D.71246 - " " L.O.P. D.71247 - Cable Eye (Positive Main). D.71248 - Cable Eye. This will enable you to put the job in hand. A complete Motor will consist of the following Sections:- Armature. 8000. D.70812. Commutator. 8010. D.70879. Bearing Brkts: 8020. D.70823. Frame & Field Winding. 8030. D.71246. Reduction Gear. 8040. D.71073. 22.37-1 ratio & using the shaft and pinion with 70° Helix thread. BY/RD. H.E.W. [Stamp]: RECEIVED [Stamp]: HS{Lord Ernest Hives - Chair} DEC 10 1926 | ||