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).
Oil pump test number 1, detailing conditions and results of oil and water levels in a sump.
| Identifier | ExFiles\Box 135\3\ scan0076 | |
| Date | 25th October 1934 guessed | |
| from the pump to the sump being fairly well distributed, 2. simulating the escape from the main and rod bearings, as well as that oil which would normally be by-passed from the pressure relief valve, which on this installation was assumed to be located in such a manner that the by-passed oil was delivered to the chain cover and allowed to flow back along the sub-tray to the suction cavity. The following is the description of this test. TEST No. 1. This was conducted using the B.W.P. suction device. Two gallons of Mobiloil "A" was placed in the sump into which 360 C. C. water was added; making a percentage of 4.77%. The depth of the water in the sump being 13/32 inches. Oil temperature 67 degrees. Oil pump speed 1000 R.P.M. representing 2000 RPM engine speed. RESULT OF TEST. Mobile "A" oil full - two gallons. Oil temperature 67. Water 360 C. C. - 13/32 deep in sump. Oil seal Full - - - 3/8" 3/4 - - - 9/16" 1/2 - - - 21/32" 1/4 - - - 21/32" Distance oil suction line below oil level height Oil height Oil height running idle 2-5/16 - - - - - 2-3/4 - - - full - 1-17/32 from bottom. 1-20/32 - - - - - 2-5/16 - - 3/4 - 1-1/8 from bottom. | ||