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 detailing water flow and pressure measurements for the Spectre engine cooling system at various RPMs.
| Identifier | ExFiles\Box 149a\1\ scan0055 | |
| Date | 12th October 1934 | |
| To E.{Mr Elliott - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} c. to Wor.{Arthur Wormald - General Works Manager} c. to By.{R.W. Bailey - Chief Engineer} 4644 339 Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}24/KW.12.10.34. Water Flow Tests, SpectreCodename for Phantom III. Replying to E.3/HP.2.10.34. Tank rigged up at approximately same height as radiator in chassis. If the water be kept at 90°C. when running with the thermostats fitted the flow and back pressure figures are the same as with the thermostats completely removed. At 80°C. the flow is beginning to be restricted. The pump does not deliver water below 350 R.P.M., outlet being 3" higher than the suction head. 1st Test. Complete System. TABLE DATA: Column Headers: R.P.M. | Time 75 lbs. | Lbs/Min. | Press. at Pump Outlet (Ins/Hg.lbs/sq) | Press in Cyl.Head (Ins/Hg) | Press. in Top Water Pipe (Before Therms) (Ins/Hg.lbs/sq.) Row 1: 500, 213, 21.1, 1.9, .7, .7 Row 2: 1000, 56.4, 79.7, 3.0, 1.2, .8 Row 3: 2000, 27.0, 166, 12.0, 4.2, 2.7 Row 4: 3000, 18.2, 247, 28.0, 9.5, 5.6 Row 5: 3500, 16.2, 277, 39.5, 12.7, 7.9 Row 6: 4000, 14.0, 321, 51.0, , | ||