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 Dicks 'Ilo.H.S.' oil in a Viper engine on an S.E.5a aircraft.
| Identifier | ExFiles\Box 77\2\ scan0038 | |
| Date | 9th October 1918 guessed | |
| COPY. REPORT NO.E.126. -on- Trials of Dicks "Ilo.H.S." Oil, known as L.1., in Viper Engine. A series of tests have been carried out with this oil in a "Viper" engine in S.E.5a machine. Flights of 2 hours, 1 1/2 hours and 1 1/3 hours were made at 4,000 to 5,000 feet altitude, the oil tank used being of standard pattern. The general running, consumption, pressures and temperatures are quite normal. TEST 1. 2 hours duration. Oil consumption 6.75 pints per hour. Cruising speed. Time mins. Atmos.Temp. Engine Temp. Tank Temps Inlet. Outlet. Oil Pressure. R.P.M. 10 7°C z 61°C 67°C 55°C 42 lbs. 1650 20 6 " 62 " 74 " 63 " 38 " 1620 30 5 " 60 " 75 " 65 " 39 " 1600 40 6 " 58 " 74 " 64.5 " 40 " 1600 50 6.5 " 58 " 75 " 65 " 40 " 1620 60 4 " 65 " 78 " 68 " 35 " 1650 70 5 " 60 " 75 " 65 " 37 " 1650 80 5 " 58 " 75 " 65 " 40 " 1630 90 6 " 56 " 73 " 64 " 40 " 1640 100 5 " 60 " 74 " 64 " 38 " 1620 110 6 " 59 " 75 " 65 " 40 " 1600 120 6.5 " 57 " 74 " 65 " 40 " 1650 Oil pressure and r.p.m. on ground normal. TEST 2. 1 1/2 hours duration. Oil consumption 7.28 pints per hour. Cruising Speed. 10 7°C 60°C 63°C 48°C 42 lbs. 1570 20 7 " 56 " 69 " 58 " 40 " 1580 30 8 " 60 " 71 " 62 " 40 " 1590 40 9 " 60 " 73 " 63 " 39.5 " 1550 50 9 " 61 " 73.5 " 64 " 40 " 1550 60 7.5 " 58 " 74 " 65 " 37 " 1600 70 8.5 " 57 " 72.5 " 63.5 " 42 " 1560 80 13 " 70 " 79 " 70 " 37 " 1600 90 9 " 56 " 77 " 68 " 38 " 1560 Oil pressure and r.p.m. on ground normal. | ||