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).
Testing of various chassis engine oil pumps, focusing on noise and different designs.
| Identifier | ExFiles\Box 149\2\ scan0070 | |
| Date | 28th July 1933 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} Sft.{Mr Swift} RHC.{R. H. Coverley - Production Engineer} Chassis Engines - Noise Oil Pumps. Referring back to your memo Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}7/KT.14.6.33, we think the test made by RHC.{R. H. Coverley - Production Engineer} on an oil pump fitted with helical gears is of considerable interest, and if the parts are at present available which were tested we should very much like to inspect them. The fact that the driving gear did not increase its clearance endways and the driven gear did, is somewhat mysterious, but it is possible that the binding up of the drive due to the torque may have transferred the thrust higher up on to the shaft carrying the spiral gear. We think this test indicates that we should seriously consider this type of pump. Referring now to the experimental model of the Moore and Savory type of oil pump, we should be glad to know if you have yet made any tests with this. The Moore and Savory pump should be absolutely silent and free from pulsation, but we are somewhat doubtful as to whether it is suitable for dealing with the dirty oil generally in circulation in an engine. We should, therefore, like this pump tested with used engine oil. The sample we have sent you does not represent the last word in design of pump, as there is a smaller and lighter scheme being developed in which the blocks are driven in the plane of the annulus instead of by overhung pins, but it is sufficiently near in type to provide a test of the annular type of pump. E.{Mr Elliott - Chief Engineer} | ||