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).
Technical note on engine valve train components, specifically push rod design and performance.
| Identifier | ExFiles\Box 124\2\ scan0325 | |
| Date | 16th July 1941 | |
| -2- Jnr.{Charles L. Jenner}10/JH.16.7.41. With a tubular steel push rod an hydraulic adjustment is essential, because the expansion rate of the rod, and the comparatively cool inlet valve stem cannot compensate for the expansion of the alum. block and cylinder head. The bounce speed would be 4250. 4000 r.p.m. can just be reached with solid steel push rod and Halford tappets. Jnr.{Charles L. Jenner} | ||