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).
Frame stiffness, presenting the results of torsion tests on various chassis and bodies.
| Identifier | ExFiles\Box 99\2\ scan0062 | |
| Date | 25th October 1937 | |
| Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Clapham. 25.10.37. REPORT ON FRAME STIFFNESS. RESULTS OF TORSION TESTS. Stiffness. lbs.ft./degree, Between wheel planes. Dash to rear wheels. Dash to Front wheels. 33-EX with body ........ 3480 7600 6050 P.III chassis with engine 2080 3075 6030 27-G.VI with body ...... 2040 3870 3960 28.G.VI chassis without engine 1150 2125 2500 ------- 24.G.VI. with body (Shardlow) 2900 5700 5700 25.G.VI. " " " 2700 4900 6700 ------- Packard Saloon (Shardlow) 3250 7400 5100 " Chassis " 1500 4200 2200 ------- Oldsmobile Saloon 3625 " Chassis with engine 1700 " " without engine 1540 2830 3330 ------- Vauxhall frame. 1200 1700 4170 ------- American frame (G.M.) 2520 5940 4460 | ||