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).
Summary of endurance tests and instructions for engine units B.17, B.18, B.19, B.20, and Phantom III.
| Identifier | ExFiles\Box 155\2\ scan0080 | |
| Date | 19th April 1937 | |
| -3- General. (1) Report of endurance on B.19. (2) " " Tests on Phantom III with curves. No.30 Bed. B.20. Test as previous memo. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}10/AP.19.4.37. following hold up by millwrights. B.18. Complete 25 hrs. endurance in accordance with previous mmeo. and return to shop for inspection. B.17. Will be next unit on test. Has Packard balance weight crankshaft. New AC 6 die cast main bearings. 3 AC.6 and 3 AC.7 (std.) big end bearings. Requires running in, then note half torsional period. Endurance to be run under alternate 10 hrs. full load and 1/4 load condition. When carrying out endurance on this unit please rig up a guard each side of the unit. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||