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).
Performance and satisfactory testing of inlet valves produced by Motor Components Ltd.
| Identifier | ExFiles\Box 158\5\ scan0048 | |
| Date | 1st September 1939 | |
| 1360 To By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} c. Da.{Bernard Day - Chassis Design} c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} c. Mx.{John H Maddocks - Chief Proving Officer} c. Les.{Ivan A. Leslie} Rm{William Robotham - Chief Engineer} .1/MH.{M. Huckerby}1.9.39. INLET VALVES. In regard to the controversy as to whether inlet valves produced by Motor Components Ltd. by the "electric upset" method are satisfactory for introduction into production, we have now had 12 months' running with this type of valve. During this time no failure or trouble in any way has been experienced and the outstanding tests consist of:- (a) 40,000 miles on B.B.V in France. (b) 105 hours' running on test bed B.80 unit including 50 hours' endurance. (c) 150 hours' running on test bed B.60 unit including 50 hours endurance. (d) 22,000 miles 30.G.VII. Other than the above, the following high power units are fitted with similar valves which collectively have run an appreciable time both on the road and the test bench. (a) B.80 Nos. 3, 4 and 5. (b) B.60 Nos. 1, 2, 3 and 4. If the original quotation still holds good, i.e. approx. 40% saving, we consider that we are not justified in withholding a standardisation sheet. The valves are produced in S/SLV. and the finish of the valves by Motor Components is excellent and well up to R.R. standard. | ||