Changing the material for front shock damper pistons to facilitate machining and improve quality.
| Identifier | ExFiles\Box 99\3\ scan0082 | |
| Date | 31th May 1938 | |
| 442 HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} c. HPS {Horace Percy Smith - Experimental Factory Mgr} /WB. {Mr Brazier / Mr Bell} Rm {William Robotham - Chief Engineer} /AFM {Anthony F. Martindale} 6/R.31.5.38. B.III - FRONT SHOCK DAMPER. With reference to Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} 3/MH. {M. Huckerby} 28.5.38., the cast steel pistons (item 3) are apparently difficult to obtain in a reasonable hardness and quality, so will you please turn them from .5% carbon steel and harden to 300 Brinell approx. The piston may be simplified as far as possible to facilitate machining. Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} | ||
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).