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).
Letter discussing valve temperature settings and design alterations for bellows length.
| Identifier | ExFiles\Box 156\1\ scan0078 | |
| Date | 29th April 1935 guessed | |
| -2- (2) We have fixed the maximum temperature at which the main valve is to be fully open and bypass valve closed at 82°C. We regret that we have not made it clear that we do not mind the valve being fully open at a lower temperature: this would be satisfactory. (3) We will attempt to obtain a design using a greater bellows length in order to make the required range a practical one. We shall be pleased to receive the above mentioned information, and trust that the proposed alterations will remove your difficulties in manufacture. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||