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).
Performance graph showing Brake Horsepower (BHP) curves versus RPM for a Lincoln Zephyr.
| Identifier | ExFiles\Box 127\2\ scan0062 | |
| Date | 14th December 1938 | |
| LINCOLN ZEPHYR 14 - 12 - 38 AXLE RATIO 4.44 - 1 WHEELS 7 X 16 EFFEC TYRE CIRC 92.75 REVS. PAR MILE 682 TYRE PRESSURE 45 LBS/sq" B.H.P CORRECTED 15°C 30°C 2000 - 59 55.4 2500 - 76.9 70.8 3000 - 84.6 79.4 3500 - 89.2 83.8 4000 - 78.0 72.0 4250 - 70.8 66.0 B.H.P M.P.H R.P.M Graph curve labels: X 15°C X 30°C Bottom right corner: M.G. | ||