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).
Oil getting onto the commutator and brush gear of the ventilated type dynamo on 4¼ litre Bentley chassis.
| Identifier | ExFiles\Box 168a\3\ img289 | |
| Date | 12th May 1934 | |
| To: [Illegible] From: Ex. 4¼ litre Bentley Dynamos. We find on chassis ex test that there is a considerable amount of oil getting on to the Commutator and brush gear on the ventilated type dynamo. Handwritten: 86142 | ||