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 plotting load test results for a .720 worm gear using castor oil at an air temperature of 17-20°C.
| Identifier | ExFiles\Box 67\4\ scan0374 | |
| Date | 22th August 1927 | |
| FIG II .720 WORM. DIRECT LOAD. CASTOR OIL. AIR TEMP 17°-20°c 22/8/27 Y-AXIS: LBS. LOAD AT 20" RADIUS. X-AXIS: LOAD ON NUT LBS. Y-Axis values: 0, 2, 4, 6, 8, 10, 12 X-Axis values: 0, 200, 400, 600, 800, 1000 Line labels: a, b, c, d | ||