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 the twist of different front springs under braking torque.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan78 | |
| Date | 16th August 1924 guessed | |
| Title: FRONT BRAKES. TWIST OF FRONT SPRINGS UNDER BRAKING TORQUE. Y-Axis Label: ANGULAR DEFLECTION OF SPRING X-Axis Label: TORQUE LBS INS Line 1: STD 40/50 H.P. SPRING 42" Line 2: F.G. NO. 4 12 1/2 % STIFFER 48 1/2" Line 3: F.G. NO. 5 & 3 28% STIFFER 48 1/2" | ||