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).
Test report on Phantom III radiator steam valves, detailing blow-off settings and measurements.
| Identifier | ExFiles\Box 94\3\ scan0193 | |
| Date | 29th April 1937 | |
| Notice Rm{William Robotham - Chief Engineer}/Std from HPS{Horace Percy Smith - Experimental Factory Mgr}/RM.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/Std. HPS{Horace Percy Smith - Experimental Factory Mgr}/RM.{William Robotham - Chief Engineer}1/VS.{J. Vickers}29.4.37. PHANTOM III RADIATOR STEAM VALVES. LOP.E.87239. - Piece No. E.87436. Herewith report on above valves as per memo Rm{William Robotham - Chief Engineer}/Std.9/AP.21.4.37. Six diaphragms E.87456 were taken from production and set to blow off on a standard radiator at 2.500 lbs/sq.in. The following were the readings taken :- 1. 2. 3. 4. 5. 6. Setting lbs/sq.in. 2.500 2.500 2.500 2.500 2.500 2.500 Washer under Spring Plug. .055 .055 .055 .055 .055 .055 Washer under Casing. .046 .035 .095 .065 .053 .048 Valve Depression. .050 .075 .010 .040 .020 .070 Max. movement of Valve .150 .130 .140 .180 .150 .160 You will notice the adjusting washer under the spring plug is the same on each test, as the altering of this makes no difference to initial blow off. R.{Sir Henry Royce} Metcalf. | ||