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).
Model frame bending test results comparing a frame with an 'X' member to one with two extra tubular members.
Identifier | ExFiles\Box 14\8\ Scan060 | |
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 | | ||