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 engine oil pump performance, lubrication, and carburation.
| Identifier | ExFiles\Box 180\M1\1\ img005 | |
| Date | 6th August 1921 | |
| Contd. -4- Hal/L06.8.21. Oil Pump. Pints per min. Revs. | Flow through engine. | Flow through relief valve. 250 | .8 | 1.1 500 | 1.2 | 2.7 1000 | 1.33 | 5.7 1500 | 1.6 | 8.0 2000 | 2.3 | 10.0 2500 | 3.0 | 15.0 Castrol oil 70°C - oil pressure 15 lbs. Oil System. As one would expect, we get a considerable difference in the oil pressure with the oil hot and cold. When the oil is cold, very little escapes by the bearings and all passes by the overflow, the resistance in the overflow pipe puts up the pressure. We would not say it is any disadvantage. It will be necessary to use a gauge which will stand an overload. The lubrication to the rockers and tappets appears to be very good. We are getting too much oil past the pistons - the engine smokes very badly. The plugs appear to be in a very good position for not oiling up. We are first testing to see if it is the oil through the gudgeon pin which is causing the over-oiling. Carburation. The carburation and distribution promises to be very good. We have not yet been able to get down to fine points but the arrangement gives very good promise. We rather fear the snivelling noise made by the pilot jet will prove too objectionable. contd: | ||