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).
Diagram and performance graphs for an E.A.C. Servo showing mechanical gain variation with temperature, speed, and load.
| Identifier | ExFiles\Box 73\1\ scan0088 | |
| Date | 18th November 1924 | |
| E.A.C. SERVO Diagram: TANGENTIAL PULL P MECH. GAIN P/W LOAD W Graph A: Title: VARIATION IN MECH GAIN WITH TEMPERATURE Y-Axis: MECHANICAL GAIN (0, 10, 20, 30) X-Axis: TIME RUN. MINS. (0, 1/2, 1, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 4 1/2, 5) Conditions: W = 10.5 LBS, DRUM SPEED 500 R.P.M Graph B: Title: VARIATION IN MECH GAIN WITH SPEED Y-Axis: MECHANICAL GAIN (10, 20, 30) X-Axis (top): DRUM REVS/MIN (157, 314, 471, 628, 785) X-Axis (bottom): EQUIVALENT ROAD SPEED M.P.H (4.2, 8.4, 12.6, 16.8, 21) Conditions: W = 10.5 LBS., TEMP DRUM = 100°C Graph C: Title: VARIATION IN MECH GAIN WITH LOAD Y-Axis: MECHANICAL GAIN (10, 20, 30) X-Axis: LOAD W IN LBS WT. (2, 4, 6, 8, 10, 12, 14, 16, 18, 20) Conditions: DRUM SPEED 500 R.P.M, DRUM TEMP 100°C Initials: W.A.R. | ||