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).
Redesign of the cylinder head valve mechanism, comparing tubular and solid push rods.
| Identifier | ExFiles\Box 123\5\ scan0297 | |
| Date | 13th February 1939 | |
| BT{Capt. J. S. Burt - Engineer}/NS{Norman Scott} c. Rm.{William Robotham - Chief Engineer} c. Da{Bernard Day - Chassis Design}/Me.S. 1044 DA.{Bernard Day - Chassis Design}4/G.13.2.39. Filer NEW B.60. CYLINDER HEAD. Please receive FD.{Frank Dodd - Bodies}378, shewing the valve mechanism details for the new head to FD.{Frank Dodd - Bodies}368. To prevent the push rod jumping out in the event of a valve sticking, the head tubes have been reduced in diameter and a moderate size of upper cup provided. Both a tubular and a solid push rod are shown. Experimental want to try the solid type on the grounds of cost, and thought it seems strange that our competitors can use tubular rods and we can't, and also the tubular type are stiffer as a strutt than the solid ones, the solid ones are those to be detailed. DA.{Bernard Day - Chassis Design} | ||