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).
Humber Car valve contours, detailing lift measurements at various degrees for inlet and exhaust cams.
| Identifier | ExFiles\Box 180\M4\M4.1\ img018 | |
| Date | 10th December 1930 | |
| -4- Humber Car contd:- Humber Car contours of Valves. Inlet Cam. Degrees. Lift. -30 .50 -20 .50 -10 .50 top 0 .502 +10 .509 +24 .524 +30 .546 +40 .575 +50 .613 +60 .662 +70 .722 +80 .773 +90 .805 +100 .817 +110 .818 +120 .816 +130 .799 +140 .759 +150 .697 +160 .638 +170 .593 B.D.P. +180 .557 +190 .532 +200 .516 +210 .506 +220 .502 +230 .502 +240 .503 +250 .503 Exhaust Cam. Degrees. Lift. 80 .50 70 .50 60 .501 50 .513 40 .531 30 .556 20 .588 10 .624 B.D.P 0 .673 10 .724 20 .780 30 .807 40 .814 50 .814 60 .814 70 .814 80 .814 90 .814 100 .814 110 .812 120 .792 130 .754 140 .690 150 .631 160 .585 170 .551 T.D.P. 180 .525 190 .510 200 .502 210 .500 220 .500 Contd:- R.R. M/A (100) (T.S.D. 109). 10-12-30. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2047 | ||