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).
Specification sheet detailing the contour of inlet and exhaust valves for a Delage car, showing valve lift at different camshaft degrees.
| Identifier | ExFiles\Box 21\4\ Scan045 | |
| Date | 25th February 1919 | |
| DELAGE CAR. CONTOUR OF INLET VALVES. Degrees of Camshaft. Lift. Degrees of Camshaft. Lift. 0° .542" 100° .7935" 5° .5425" 105 .7715" 10° .546" 110 .746" 15 .551" 115 .7135" 20 .559" 120 .685" 25 .5745" 125 .6495" 30 .5955" 130 .623" 35 .6215" 135 .599" 40 .657" 140 .5815" 45 .6935" 145 .562" 50 .732" 150 .558" 55 .766" 156 .5505" 60 .7835" 160 .545" 65 .801" 165 .542" 70 .8125" 75 .8135" 80 .810" 85 .8125" 90 .8135" 95 .810" --------------------------- CONTOUR OF EXHAUST VALVES. 0° .5085" 105° .628" 5° .509" 110 .6665" 10 .5095" 115 .703" 15 .5105" 120 .737" 20 .5105" 125 .758" 25 .5105" 130 .774" 30 .5105" 135 .7825" 35 .5105" 140 .785" 40 .5105" 145 .783" 45 .5105" 150 .777" 50 .5115" 155 .764" 55 .512" 160 .747" 60 .5125" 165 .7225" 65 .5145" 170 .6945" 70 .5225" 175 .663" 75 .5145" 180 .627" 80 .5215" 185 .601" 85 .533" 190 .573" 90 .5495" 195 .556" 95 .570" 200 .541" 100 .598" 205 .527" 210 .5195" (Contd). | ||