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 a 'Savery' oil pump against a standard gear pump for noise and performance.
| Identifier | ExFiles\Box 149\2\ scan0073 | |
| Date | 4th September 1933 | |
| X5009 To E.{Mr Elliott - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} c. HIC. Srt. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}5/KT:4.9.33. CHASSIS ENGINE NOISY OIL PUMPS. With reference to E.1/HP.28.7.33., we have tested the "Savery" pump and attach information relating thereto. For suction lift and minimum pumping speed we ran it on petrol to get a comparison with the gear pump, as this is a stiffer test than using oil. We have also run it on a sample of dirty oil taken from the engine without any trouble, and hand the pump to you herewith for your examination. We cannot pass any opinion on the silence of this pump because the car oil pump can be perfectly silent under rig conditions and yet be most objectionable on the chassis. The "Savery" pump does not appear to have any particular features such as an extraordinary good dry suction lift. We give some gear pump figures for comparison. The advantages of the helical gear appears to be that it is capable of replacing the standard pump without any major modifications. We attach sketches of the pump for record purposes. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||