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).
From EFC to Mr. Brock regarding the return of two dynamos borrowed for performance testing with thinner armature stampings.
| Identifier | ExFiles\Box 68\4\ scan0064 | |
| Date | 10th April 1929 | |
| X8672 Mr. Brock. from EFC. EFC4/T10.4.29. We return herewith the two dynamos YH.15.N.B.28S and YH.35.NB.28S, borrowed for the purpose of ascertaining what difference in the performance of the machine may have resulted from the use of thinner armature stampings. A revised specification of test for this type of machine will be sent you shortly. EFC. | ||