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).
Extract from a report on the performance of a dynamo with bakelaque insulation after 5,000 and 10,000 miles.
| Identifier | ExFiles\Box 62\3\ scan0044 | |
| Date | 28th April 1930 | |
| X. 6005 . 28.4.30. Extract from Mr. Hancock's report dated 12.3.30. on 14-GIV. after 5,000 miles. GENERATOR. DYNAMO WITH 48 COIL ARMATURE FITTED WITH BAKELAQUE INSULATION. The general quietness of the dynamo is very good. The output is considerably better. A chart of the output has been sent. The commutator and brushes are in good condition. 26.3.30. after 10,000 miles. The dynamo output is still O.K. there is no sign of burning of the commutator brushes are free in the guides, it remains quiet. | ||