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).
Programme of test bed work for various engine units including endurance and oil consumption tests.
| Identifier | ExFiles\Box 155\2\ scan0316 | |
| Date | 8th May 1939 | |
| 1315 To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}3/MH.{M. Huckerby}8.5.39. PROGRAMME OF TEST BED WORK. Further to memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}3/MH.{M. Huckerby}27.4.39. No.30 BED. Rm{William Robotham - Chief Engineer} B.80 No.3. Following inspection of cap half main bearings (Vandervell W/M 2.75 dia.) after 18 hrs. endurance, photograph and refit for further running. dawben Studebaker ex B.60 No.1 to be fitted for further running. Including 18 hrs., a total of 50 hrs. should be run under the following conditions. Full throttle 7 hrs. 2 hrs. ½ load and 1 hr. ¼ load. 15 mins. at 3000 R.P.M. 15 mins.at 3000 R.P.M. " " " 3500 " 15 " " 3500 " 10 " " 4250 " 30 " " 4000 " 5 " " 4500 " W.III NO.4 UNIT. No.9, unit. To be temporarily removed to test Wraith III W.III NO.9 UNIT. To be tested prior to being refitted in 2.B.50 chassis. Run 1 hour's oil consumption at 4000 r.p.m., repeat if in excess of 2 pts/hr. Continued. | ||