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).
Instructions to modify the starter armatures for the 'Data Motor' and 'Super Sports' models.
| Identifier | ExFiles\Box 64\2\ scan0188 | |
| Date | 8th September 1928 | |
| To EY. from EFC. c. BY/RD. RHC.{R. H. Coverley - Production Engineer} X762573 EFC1/T8.9.28. SEQUENCE STARTER ARMATURES INSTRUCTED FOR DATA MOTOR AND SUPER SPORTS. In view of our recent observations and investigations, we think the instructions for these two motors should be held up for the moment. For instance, it is our intention to alter the armature taper to half the previous amount, also to advise modifications in the dimensions of the slots, the new slots probably being almost (if not quite) exactly as laid out by yourself. The matter is having our immediate attention, but it may already be taken that the armature taper will be 3.100 to 3.000". The number of slots and number of field turns per pole remain at 41 and 6½ respectively, as at present. EFC. | ||