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).
Sourcing and specifications of instruments for the L.H. S.S. instrument board.
| Identifier | ExFiles\Box 15\7\ Scan134 | |
| Date | 10th May 1930 | |
| SECRET. X7530. To Ey. from Da{Bernard Day - Chassis Design}/Ev.{Ivan Evernden - coachwork} c. Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair} c. GRN. CY. Da{Bernard Day - Chassis Design}/EVI/10.5.30. INSTRUMENT BOARD FOR L.H. S.S. X.7772 X.7530. We thank you for your Ry6/G8.5.30 re the above. You state that the minutes of the Conference in Derby tell us all that we should want to know. We presume that you refer to the conference of the 10th of April last. Your letter says that it was agreed at the conference that the instruments were to be American. We would refer you to page 18 of the minutes and the only reference to this subject, which says very little definitely, but it does say :- "Cy. stated the speedometer would be supplied by America but the smaller instruments he would like England to supply". We agree that the minutes state that Cy. had ordered a sample set of instruments from America for our inspection with a view to considering points in which they might be deemed better than our own. We do not see it stated that this set of instruments would be fitted to the second L.H. Expl. Phantom 2. Again we agree that last February we received a large parcel of several hundreds of drawings of R.R.A.I. parts amongst which were some prints of American instruments, but it is not stated in any previous correspondence or in the minutes that these drawings which left America last December will agree with the sample set of instruments when they do arrive. We make the following comments on the American instruments as shewn in the prints we have now found. (a) The thermometer has no electrical connections for the operation of the red warning lamp. We think that we shall still need this with thermostatically operated shutters to give warning when the shutters have become stuck closed. | ||