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 production inspection and testing of R.R. Phantom and S.S. type dynamos with 28 slot armatures and thinner armature stampings.
| Identifier | ExFiles\Box 68\4\ scan0058 | |
| Date | 10th April 1929 | |
| X8672 BY.{R.W. Bailey - Chief Engineer} from EFC. 66 Mr. Brock. EFC2/T10.4.29. Herewith please receive Specification of Production Inspection and Test applicable to R.R. Phantom and S.S. type dynamos with 28 slot armatures and thinner armature stampings. You will note that amongst other things the output obtainable from these thinner stamping machines (i.e. for a given heating) is slightly increased. EFC. | ||