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).
Requesting a test on the Phantom III crankshaft damper at 5000 r.p.m.
| Identifier | ExFiles\Box 93\5\ scan0133 | |
| Date | 13th February 1937 | |
| To W.Bell. c.c. to HPS.{Horace Percy Smith - Experimental Factory Mgr} c.c. to Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 317 Rm{William Robotham - Chief Engineer}/Smth.7/JH.13.2.37. PHANTOM III CRANKSHAFT DAMPER. Confirming our conversation will you please arrange to run a Phantom III crankshaft damper at a steady speed of 5000 r.p.m. This is to see whether the damping increase due either to the duck washers spreading under centrifugal force, or to the oil centrifuging out. Rm{William Robotham - Chief Engineer}/Smth. | ||