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).
Technical memo discussing design modifications for a dashboard pump.
| Identifier | ExFiles\Box 27\1\ Scan094 | |
| Date | 22th February 1929 | |
| X.3806 Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} DAL/M22.2.29. DASHBOARD PUMP. We thank you for your Hs{Lord Ernest Hives - Chair}/Gy2/LG19.2.29. We note that the use of a spring enables the valve to be opened .125. Would you please allow for this opening on the two schemes shown on figs. 2 and 3. (whichever you decide to use.) It is possible however that the sleeve stop shown on the fig.2. scheme is not really necessary, and that your suggestion of the spring under the nut stopping by shutting choc-a-bloc will be satisfactory for this very light duty job. As was recently shown on the petrol cock in spite of the low velocity part of the resistance to filling is due to velocity head and a slight increase in the dia. is nearly sure to make a very great difference. DA.{Bernard Day - Chassis Design} | ||