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).
Comparing the torsional strength and weight of a Jaguar frame versus a plain box section frame.
| Identifier | ExFiles\Box 113\5\ scan0064 | |
| Date | 2nd June 1938 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} c. Da.{Bernard Day - Chassis Design} c. Da{Bernard Day - Chassis Design}/Iv. 1610 also 107a Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}6/MH.{M. Huckerby}2.6.38. BOX SECTION FRAME. We have measured the torsional strength and weight of the Jaguar frame for the purpose of obtaining a comparison between a frame with a cruciform member, and a plain box section frame. The box section frame is 89% heavier, other things being equal. Figures are given in the attached report. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||