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).
Report presenting the results of frame stiffness and torsion tests for various car models.
| Identifier | ExFiles\Box 86\4\ scan0225 | |
| 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 Dash to Dash to wheel planes. rear wheels. 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 | ||