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 the construction of a Phantom III prop shaft damper with twice the inertia of the 25/30 unit.
| Identifier | ExFiles\Box 94\4\ scan0142 | |
| Date | 15th February 1937 | |
| x 337 HPS{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Smth. Rm{William Robotham - Chief Engineer}/Smth7/M.15.2.37. Ph.III Prop Shaft Damper. We want to try a prop shaft damper on Ph.III of twice the inertia of the 25/30 unit. Will you please build one up to the attached sketch, using C.I. rings screwed on to a standard damper. Rm{William Robotham - Chief Engineer}/Smth. | ||