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).
Chart showing the volatility curves for various motor fuels.
| Identifier | ExFiles\Box 32\1\ Scan043 | |
| Date | 27th March 1917 | |
| The Motor 170 27th March, 1917. VOLATILITY OF MOTOR FUELS. DEGREES CENT. FAH. 182 360 171 340 160 320 148 300 138 280 127 260 116 240 104 220 93 200 82 180 71 160 60 140 49 120 PER CENT. CURVE LABELS: PARAFFIN .814 PARAFFIN .802 INFERIOR SUBSTITUTE .784 BEST SUBSTITUTE .772 PARAFFIN (.814) AND MEX (.715) MIXTURE (equal parts) CARBUS .737 CROWN .740 REDLINE II .725 PRATT I .720 CARLESS I .699 To avoid unnecessary complication several curves are omitted. For practical purposes, however, the curve for "Pratt I" also represents "Carburine I." The curve "Redline II" represents "Carburine II," "Mex," "Redline I," and "Shell I." Similarly, the curve for "Crown" represents "Shell II," "Pratt II," "Carburine III," and "Taxibus." B12 X 530 | ||