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 suitability of various 6-volt and 12-volt electrical self-starter and dynamo systems.
| Identifier | ExFiles\Box 61\2\ scan0085 | |
| Date | 27th October 1914 guessed | |
| -3- RLO/IB271014. Contd. It is, I believe, a six volt set, but I am not sure. In that case it would need a six volt battery and special lamp bulbs which I understand are easily procurable. It will be noted however, that it is not suitable for the 12 volt self starter job which I have the impression might be fitted to this chassis, so it is a little difficult to know what to recommend being done. There is another very similar system also with the the vibrator form of regulator, know as the S.E.V., which we believe is made by the French Thompson Houston Company. If this is a 12 volt job, I should prefer that we fitted it. If, however, we cannot get it for some reason, or we want to use up our Bijur set, we might wind our self starter for six volts by doubling the number of turns and twice the section of copper everywhere. You will notice we are not particularly interested in the self regulating, constant current dynamos, such as the C.A.V. and Lucas, except as a temporary measure before we commence making our own, and as pointed out I am rather inclined to favour the Lucas, providing we could get them from them a slower speed dynamo which is more suitable in shape for the space we have at its disposal. We are returning the C.A.V. cut-out under separate cover today, and if you will compare it with the equivalent Lucas fitting, you will find it is very heavy (Contd). | ||