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).
Endurance test report on a pump, detailing component wear and performance over multiple runs.
| Identifier | ExFiles\Box 66a\3\ scan0141 | |
| Date | 29th August 1935 | |
| contd. -4- HGS/T32 ENDURANCE. The pump was fitted with a complete set of new bearings, glands and shaft. With an increased spring pressure (30 lbs.) the unit was run for 15 hrs. (total running time). It was noticed that after approx. 10 hrs. that the glands were leaking but the pump was not stripped until the 15 hrs. run was completed. When examined the bearings and glands were found to be in excellent order. The shaft was very slightly scored but the amount of wear on the diameter was exceedingly small, almost unmeasureable. The same parts were refitted, and another 15 hrs. run was completed. No leaks were observed during the second run, and when examined the parts were apparently unaltered. When measured it was found that the shaft had not worn at all where the glands fitted, and had worn .00035" - .0005" where the middle whitemetal bush fitted. | ||