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 consumption and discharge through engine bearings, comparing results from 3 and 7 oil feeds.
| Identifier | WestWitteringFiles\N\2October1925-December1925\ Scan256 | |
| Date | 12th June 1925 | |
| R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs{Lord Ernest Hives - Chair}/ACL/LG7.13.25 [Graph Title] OIL CONSUMPTION & DISCHARGE THROUGH BEARINGS WITH 7 & 3 FEEDS ON NEW ENGINE OIL PRESS 20-30 lbs/[]" [Graph Y-Axis Left] CONSUMPTION PTS/HR. [Graph Y-Axis Right] OIL DISCHARGE PTS/MIN [Graph X-Axis] ENG R.P.M. [Graph Annotation] The full lines are the results obtained with 3 bearings feeds. It will be seen that both the flow through the bearings and the consumption is low relative to the average obtained for these engines, particularly so with regard to consumption when we consider that plain concentric rings were used. Other tests of a similar nature were carried out on another standard Phantom engine which had previously had a considerable number of hours hard running on the test bench and from consideration of this we expected it to have fairly slack bearings. After the oil flow through the bearings and consumptions were taken in it's standard form, the engine was converted for use with the three main oil feeds only as described for the previous test. Contrary to the previous results a definite reduction in both oil flow and consumption resulted when the three main oil feeds only were used compared with the figures obtained for seven bearing feeds. The reduction was also contd :- | ||