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).
Noisiness of a dynamo and proposing a bimetal thermostat control as a potential solution.
| Identifier | ExFiles\Box 165\6\ img253 | |
| Date | 27th December 1929 | |
| EFC3/AD27.12.29 contd. -5- seemed to be completely spoilt by the noisiness of the dynamo, which feature seemed to have had little or noattention in the design of that unit. We will look up this experiment in detail,and perhaps again refer to the matter after so doing. Another possibility which has received little consideration is that of bimetal thermostat control (with or without magnetic toggle action giving an overlap effect) which operates to insert or take out a field resistance with much the same result technically as a magnetically operated device. Such a unit would have to be included in the dynamo carcase and work purely on a temperature limit. On consideration it will be seen that a reliable device of this kind would be very nearly exactly right for all circumstances of climate, season, state of charge, conditions of use etc. etc. We propose to refer to this possibility in more detail in a later memo. EFC. | ||