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).
Test report detailing the results of cross member tests on a model frame.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan190 | |
| Date | 11th May 1928 | |
| 11.5.28. CROSS MEMBER TESTS - MODEL FRAME. Test No.1. X member complete, including tubular member. " " 2. Tubular member removed. " " 3. Diagonal bracers removed. " " 4. Front, rear, and side gussets removed. " " 5. All gussets refitted, bolts in corner plates removed. " " 6. X replaced by 3 tubular members ++ Load on Total deflection at corners - ins. each corner. TEST NO. lbs. 1 2 3 4 5 6 -------------------------------------------------------------------------- 0 0 0 0 0 0 0 100 .022 .022 .023 .020 .034 .128 200 .058 .058 .059 .045 .070 .307 300 .086 .086 .091 .088 .118 .575 400 .116 .116 .122 .120 .160 1.026 500 .142 .142 .160 .156 1.202 Frame balanced about centre line of one member of the X. Balance load 5 1/2 lbs. Balance load 7 lbs. ++ Load radius about centre of X member long side = 13.6" * * * * * * * * * * * * short side = 12.650" ********************** | ||