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 of frame deflection versus torque for different chassis models and spring configurations.
| Identifier | ExFiles\Box 14\5\ Scan081 | |
| Date | 8th February 1929 guessed | |
| CHASSIS NO 10 GIII. 1 | x-·-·-x | REAR SPRING CHOCKED } CHASSIS GIII STANDARD 2 | o---o---o | " " FREE } " READINGS OF θ ARE AVERAGE FOR NS{Norman Scott} AND OS. OBSns 3 | o-----o | REAR SPRINGS CHOCKED CROSS COUPLED. } CHASSIS GIV RUBBER ENGINE MOUNTING 4A | Δ-----Δ | REAR SPRINGS UNCHOCKED CROSS UNCOUPLED. } " TORQUE LBS-FT FRAME DEFLECTION θ ① ② ③ ④ | ||