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).
With graphs showing Silver Ghost oil consumption versus oil pressure and oil flow from road tests.
| Identifier | ExFiles\Box 72\1\ scan0113 | |
| Date | 12th June 1925 | |
| R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: HS{Lord Ernest Hives - Chair}/ACL/LG151225 [Graph 1] Title: OIL CONSUMPTION ON SILVER GHOST WITH VARIOUS OIL PRESSURES. RESULTS FROM ROAD TESTS. Subtitle: AVERAGE SPEED 34 M.P.H. Y-Axis: CONSUMPTION MILES/GALLON X-Axis: OIL PRESSURE lbs/D'' Labels: Dia.1., CAR. S.EX. The same results are given below on an oil flow base which illustrates this point. It should be mentioned here that in order to get a true comparison and avoid complications, the extra oil feed to the cyls. of the Silver Ghost was disconnected. [Graph 2] Title: OIL CONSUMPTION WITH INCREASING OIL FLOW THROUGH BEARINGS. SILVER GHOST ROAD TESTS. Subtitle: AVERAGE SPEED 34 M.P.H. Y-Axis: CONSUMPTION MILES/GALL. X-Axis: OIL FLOW PINTS PER. MIN. Labels: DIA 2., CAR. S.EX. | ||