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 instructions for a new Bentley III camshaft for maximum power experiments.
| Identifier | ExFiles\Box 98\5\ scan0026 | |
| Date | 17th October 1938 | |
| 407 To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby}17.10.38. BENTLEY III CAMSHAFT. We wish to try some maximum power experiments and would like you to instruct for a camshaft as follows. The master forms are already in existence, therefore it is only a matter for the actual making of the shaft. Same form EB.4141, to be used for all cams. Angle between cams 112.5°. Exhaust leading inlet. Camshaft otherwise as EB.4143. The valve timing will, with the exception of the inlet close be as EB.4142. The inlet close will be 58° past BDC with .030 clearance. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||