Performance analysis of a lightened push rod compared to a standard set up.
| Identifier | ExFiles\Box 124\2\ scan0328 | |
| Date | 16th July 1941 | |
| -2- Rm {William Robotham - Chief Engineer} /TAS. {T. Allan Swinden} 12/JH.16.7.41. The lightened push rod alone gives a 210 r.p.m. advantage with the Halford tappet, and 220 r.p.m. with a standard set up. This is better understood when it is known that a solid steel B.60 push rod weighs .23 lbs. - 16% more than a standard inlet valve. Rm {William Robotham - Chief Engineer} /TAS. {T. Allan Swinden} 1AS | ||
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).