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).
The investigation of a noisy high-pressure petrol pump from Chassis 3.CP.10, identifying an air leak as the cause.
| Identifier | ExFiles\Box 96\1\ scan0241 | |
| Date | 30th December 1937 | |
| 361 To By.{R.W. Bailey - Chief Engineer} c. to Mx.{John H Maddocks - Chief Proving Officer} c. to By/Scott. c. to Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}7/JH.30.12.37. HIGH PRESSURE PETROL PUMP. From Chassis 3.CP.10. In reply to your memo. By/NS.{Norman Scott}8/G.22.12.37. We have tested this pump on the rig and found both the units noisy. It was observed that there was a considerable air leak on the suction side of the pump this was found to be due to a bad seating on the suction union. There was a mark on the spherical face and we presume that at some time a piece of grit had been trapped between the union and nipple on the pipe, when this was removed the pump was quiet and the air leak stopped. In all other respects this pump was in excellent condition and the delivery of both units well above the minimum allowed. In every complaint of noise particular attention should be paid to the joint on the filter and all other connections on the suction line. An air leak will make any pump noisy. Rm{William Robotham - Chief Engineer}/J.B.Dixon. | ||