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).
Index list of winding diagrams for various dynamos and motors with their corresponding drawing numbers.
| Identifier | ExFiles\Box 68\4\ scan0235 | |
| Date | 1st January 1927 | |
| X1640 1.1.27. X.1640. WINDING DIAGRAMS. Dynamos:- 20 HP. 29 slot & coil. D.50026. 20 HP. 29 slot & 57 coil (Rectangular)diagram). D.51115. Std. 20 HP. 19 slot & 57 coil. D.51372. 20 HP. 28 slot & 56 coil. (Rectangular diagram). D.51491. EAC. 29 coil & slot. D.70355. EAC. 29 slot & 57 coil(Early). D.70800. EAC. " " " " (Later). D.71051. EAC. " " " " (Latest). D.71236. Std. 40/50 28 slot and 56 coil. D.{John DeLooze - Company Secretary} Motos :- R.R. 40/50. 45 slot & coil. D.1949. (Struck through entry below D.1949: E.13768. Std.) R.R. 20 HP. 29 slot & coil. D.50219. Std. R.R. EAC. 41 slot & coil. D.70304. | ||