Calculations for engine rocker ratio, cam and valve acceleration.
| Identifier | ExFiles\Box 85\3\ scan0022 | |
| Date | 24th May 1934 guessed | |
| 'R' rocker ratio 1.45 Cam acc Denis .005 / 1.45 = .00344 For Birley scale down .8848 becomes .00298 (cam acc 11,200) Valve acc .08367 At 4500 rpm = 1680 + 3.67 + 20.25 / 9 = 18/800 f.s.s (STD) camshaft valve acc at 4500 18/200) 14/800 | ||
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).