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).
The requirement for a ventilated dynamo for the Spectre model due to increased electrical load.
| Identifier | ExFiles\Box 168a\3\ img198 | |
| Date | 23th May 1935 | |
| SECRET L6099 E.{Mr Elliott - Chief Engineer} From Ha/Wat. c. to Hy.{Tom Haldenby - Plant Engineer} Ha/Wat.6/MA.23.5.35. SPECTRECodename for Phantom III VENTILATED DYNAMO. We are still without any experimental design instruction regarding the above and as the car will soon be undergoing standardisation tests it is imperative that consideration be given to the ventilation of the dynamo due to the increased electrical loading of the SpectreCodename for Phantom III as compared with our other cars. Ha/Wat. | ||