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 flow measurements through bearings for car 67-TC.
| Identifier | ExFiles\Box 65\4\ scan0009 | |
| Date | 1st July 1926 | |
| Y8000 To Mx.{John H Maddocks - Chief Proving Officer} from Hs{Lord Ernest Hives - Chair}/ACL. Hs{Lord Ernest Hives - Chair}/ACL1/LG6. 7. 26. RE. OIL FLOW THROUGH BEARINGS. Y8980 The results of the oil flow measurements on your car 67-TC shew that there is a flow of 1.95 pts/min. at 1000 r.p.m. with just over 30 lbs/sq.in. oil pressure and a temperature of 60°C. For your comparative tests it should only be necessary to take readings at 1000 r.p.m. The oil should be at a temperature of approximately 60°C before taking the test. It should be remembered that the oil supply to the rockers and gears must be stopped for the test. As an indication of the oil flow which can be obtained we have found that a car with carefully fitted bearings and a pressure of 27 lbs/sq.in. would give .7 pts/min. at 1000 r.p.m. and still have sufficient lubrication. See report on Phantom Lubrication and Over-oiling in Technical Information File for blue prints. Hs{Lord Ernest Hives - Chair}/ACL. | ||