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).
Calculations and timing diagrams for an improved camshaft design for China.
| Identifier | ExFiles\Box 102\5\ scan0116 | |
| Date | 9th January 1932 guessed | |
| 85090. IMPROVED CAMSHAFT FOR CHINA. Ex. 10 11 IN 40 39 EXHAUST 104° B.T.D.C. EX. LEADS INLET BY 107.5° INLET CAM CENTRE 111° A.T.D.C. Inlet cam centre (180 + 34) / 2 + 6° A.T.D.C. = 111° A.T.D.C. Exhaust Cam centre (180 + 50) / 2 - 11° B.T.D.C. = 115 - 11 = 104° B.T.D.C. .. Angle between cams on camshaft is equal to (111 + 104) / 2 = 107.5° And this should give required timing as above. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||