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).
The torsional stiffness and weight of the Bentley III frame.
| Identifier | ExFiles\Box 99\2\ scan0104 | |
| Date | 5th January 1938 | |
| 200h To By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} Rm{William Robotham - Chief Engineer}/Cm.8/JH.5.1.38. BENTLEY III FRAME TO F.C.D.139. 427 The latest Bentley III frame to drawing F.C.D.139 give a torsional stiffness between wheel planes of 1470 lbs.ft/degree. Between the dash and the front wheels the stiffness was 4600 lbs. ft/degree, and between the dash and the rear axle 2160. The weight is 262 lbs. Rm{William Robotham - Chief Engineer}/Clapham. | ||