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).
Graph charting temperature against time and RPM for a Rover 14 HP Free Wheel.
| Identifier | ExFiles\Box 127\3\ scan0039 | |
| Date | 11th April 1935 | |
| ROVER 14 H.P. FREE WHEEL TEMPERATURE / TIME / R.P.M CHART. TEMP CHECKED AT 15 MIN INTERVALS. TEMPERATURE °C 20 40 60 80 100 120 TOTAL TIME RUN - HRS. 1 2 3 4 5 6 7 8 9 SHAFT SPEED R.P.M. 1500 1750 2000 2250 2440 MB | ||