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).
Amended specifications and testing for the N.B. type dynamo.
| Identifier | ExFiles\Box 70\4\ scan0087 | |
| Date | 7th March 1928 | |
| X8781do To BY.{R.W. Bailey - Chief Engineer} from EFC. c. Mr. Brock. c. Mx.{John H Maddocks - Chief Proving Officer} EFC7/T7.3.28. R.R. EAC. DYNAMO OF THE N.B. TYPE. Herewith please receive amended copy of the Specification of production inspection and test of the N.B. type dynamo for EAC. into which, in addition to one or two small alterations, we have now included the addition of item (3) referred to in our EFC4/T6.7.27. The alterations referred to are the result of our tests on the 12 production N.B. machines which have passed through our hands. We are now pushing on experimentally with the use of the 28 slot armature for this machine which we think will ultimately show sufficient advantage to become another item for standardisation. EFC. | ||