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 illustrating the efficiency and deflection characteristics of a pin-jointed octagon.
| Identifier | ExFiles\Box 92\4\ scan0039 | |
| Date | 21th December 1934 guessed | |
| 100% 90% EFFICIENCY (95.5%) % EFFICIENCY 70% EFFICIENCY OF PIN JOINTED OCTAGON R R PIN JOINTS NOS. G.53634 G.50142 G.52047 SPRING BALANCE IN ONE "SECONDARY" SIDE GIVING DEFINITE SLIP IN JOINTS FOR N = 95.5% M = 0.265 DEFLECTION - THOUSANDTHS OF AN INCH 700 600 500 400 300 200 100 LBS - INPUT 0 20 70 120 170 220 320 420 520 620 | ||