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).
Page discussing gains from a 112° camshaft and higher compression.
| Identifier | ExFiles\Box 29\3\ Scan277 | |
| Date | 25th August 1930 | |
| -4- Ha/Rm.{William Robotham - Chief Engineer}7/MJ.25.8.30. Contd. gain due to the 112° camshaft and higher compression. | ||