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).
Bending test results for a model frame with different member configurations.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan195 | |
| 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 | ||