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 to change the material of 20/25 Propeller shaft damper hubs to RR.53 to reduce weight.
| Identifier | ExFiles\Box 105\2\ scan0154 | |
| Date | 10th November 1936 | |
| 537 HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}3/R.10.11.36. PROPELLER SHAFT DAMPERS. Will you please put in hand 3 hubs of the 20/25 Propeller shaft dampers in RR.53, instead of the present brass. The object of this is to reduce weight. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||