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).
Results of bending tests on a model frame with different member configurations.
| Identifier | ExFiles\Box 67\1\ scan0226 | |
| Date | 23th May 1928 guessed | |
| MODEL FRAME TESTS. Bending test. Frame horizontal. One channel clamped to bed, each transverse member supported on a roller at the centre, free channel loaded at centre of X. member. TEST WITH 'X' MEMBER COMPLETE AND FRONT TUBULAR MEMBER. | Load. lbs. | Deflection. at A.{Mr Adams} Ins. | Deflection. at B. Ins. | Deflection. at C. Ins. | |------------|------------------------|------------------------|------------------------| | 100 | .016 | .018 | .014 | | 200 | .029 | .028 | .025 | | 300 | .044 | .044 | .036 | | 400 | .057 | .060 | .047 | | 500 | .071 | .077 | .059 | 'X' MEMBER REPLACED BY TWO EXTRA TUBULAR MEMBERS. | 100 | .010 | .016 | .013 | | 200 | .022 | .029 | .026 | | 300 | .037 | .041 | .036 | | 400 | .049 | .053 | .048 | | 500 | .061 | .066 | .060 | | ||