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 versus movement and showing the efficiency of a torsion shaft in a front axle.
| Identifier | ExFiles\Box 92\4\ scan0040 | |
| Date | 21th December 1934 guessed | |
| [ "MFH", "PERCENTAGE EFFICIENCY", "100%", "90", "80", "EFFICIENCY:", "88.7%", "EFFICIENCY OF TORSION SHAFT IN 20-25", "FRONT AXLE", "HYSTERESIS READINGS TAKEN WITH SPRING", "BALANCE IN "SECONDARY" GIVING DEFINITE", "SLIP IN SHAFT.", "EFFICIENCY IS CONSTANT OVER MEASURABLE RANGE", "BEING EQUAL TO 88.7%", "MOVEMENT : THOUSANDTHS OF AN INCH", "500", "400", "300", "200", "100", "0", "LOAD - LBS", "0", "225", "325", "425", "525", "625" ], | ||