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).
Instruction sheet detailing a report on 20hp Dynamos M and R3.
| Identifier | ExFiles\Box 50\5\ Scan364 | |
| Date | 30th April 1925 | |
| HH 23B (100 BKS) (SH57.29-6-20.) MP 224368 X6333 ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC. {E. Fowler Clarke - Electrical Engineer} Order No. AC.5T. Customer's No. X 4883 . X4626. 30 April 1925. 20hp Dynamos M and R3. M. {Mr Moon / Mr Moore} This machine has run 4096 miles on 4GI and was reported in AC.38 of 5-II-25. Since then it has run a further 1236 miles on GF.68, totalling 5332 and has now been removed and replaced. The commutator (29 segments, annealed) is in very good condition and the brushes are fairly smooth, but the positive is characteristically blackened. The machine was set by the general specification, the control brush position found being 129° from the positive. Brush wear has been (over 5332 miles) Positive .122" Negative .048", Control .041". (Contd) This Sheet must be filed on completion of the work. | ||