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).
Report analysing quarterly oil consumption returns from 1934 to 1936, investigating causes for increased usage.
| Identifier | ExFiles\Box 144\3\ scan0035 | |
| Date | 24th February 1936 | |
| conf. X1220 B. EF. Guards Aerolite Pistons. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} K/KC/DPB/24.2.36. OIL CONSUMPTION. Reference your Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}2/KW.22.2.36, I give below the returns concerning oil consumption since the first return made to W for the quarter ending June 1934:- June quarter........1934. Nil. September " ........1934. Nil. December " ........1934. Nil. March.... " ........1935. Nil. June.... " ........1935. 3. (1.C.W.series) (1.B.N. ") (1.D.G. ") September quarter...1935. 7. (2.BL series.) (1.CW ") (3.DK series.) ✓ x Rockers (1.EF ") December quarter...1935. 9. (1.BL series.) (1.BN{W.O. Bentley / Mr Barrington} ") (4.DK ") ✓ High Oil Pressure . (1.DG ") x Rockers (1.EF ") (1.FB ") March quarter to date......... 8. (1.AH series.) (1.DK ") (1.DG ") (2.EJ ") (2.FB ") Analysing these returns and estimating that the affected area dates from the chassis No.B.189.DK, at which point the increased cylinder lubrication as per Depot Sheet Hd.{Mr Hayward/Mr Huddy}279 was carried out, then the June quarter shews three cars out of three outside the affected areas. September quarter shews five cars out of seven also outside the affected areas. Of the remaining two cars, one car was fitted with extra cylinder lubrication, the other with Aerolite pistons, but reversed rocker rods were the cause of the heavy oil consumption. -contd- | ||