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).
Number of production dynamos received and modified during a specific week.
| Identifier | ExFiles\Box 165\6\ img152 | |
| Date | 30th May 1927 | |
| X8660 RE DYNAMOS. X.8660. X.5660. EFC/T30.5.27. No. of prodn. 40/50 dynamos received by Test Dept. for the week 30.4.27 to 28.5.27 was 48, 29 of which were returned for modification and modified. No. of prodn. 20 HP. dynamos received ditto was 32, 8 of which were returned for noise modification and 5 were modified. EFC. Information received from Mr. Daykin. | ||