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).
Request to machine an inclined valve high power head and create a new gasket to achieve a specific compression ratio.
| Identifier | ExFiles\Box 133\1\ scan0242 | |
| Date | 6th July 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} 1129 Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards}12/JH.6.7.37. Inclined valve high Power Head. Will you please machine .0944" off the above head, and make an alum gasket 21 gauge (.032") thick to give a C.R. of 6.4. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} | ||