Instruction to machine the inertia ring on a Wraith flexible flywheel for easier crankcase assembly.
| Identifier | ExFiles\Box 8\1\ 01-page57 | |
| Date | 3rd May 1938 | |
| 612 To HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /HRC. c. Rm {William Robotham - Chief Engineer} /Sym. Rm {William Robotham - Chief Engineer} /HRC.3/MR.3.5.38. FLEXIBLE FLYWHEEL, WRAITH. Please machine .100 off the face of the existing inertia ring Rm. {William Robotham - Chief Engineer} 500, as shown on revised print herewith. Please scrap the original print. This is in order to make it easier to get the bottom half crankcase up. The part Rm. {William Robotham - Chief Engineer} 500 is not on an engine at the moment, but will be required very shortly. Rm {William Robotham - Chief Engineer} /HRC. | ||
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).