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).
Torsion tests on a 'Myth' frame, showing twist rates and deflection data in tables and a graph.
| Identifier | ExFiles\Box 110\2\ scan0067 | |
| Date | 27th March 1944 | |
| TORSION TESTS ON MYTH FRAME KEY TABLE: KEY: --- (dashed line), No. of TEST: 3, DATE: 20.12.43, RATE BETWEEN FRONT & REAR WHEELS: 509 LB-FT/degree, REMARKS: FRONT MEMBER BOXED IN TO PL 1127 ADDITIONAL TACK-WELDING KEY: — (solid line), No. of TEST: 4, DATE: 26.3.44, RATE BETWEEN FRONT & REAR WHEELS: 526 LB-FT/degree, REMARKS: AS TEST 3, BUT WITH REARMOST CROSSMEMBER STIFFENED TO PL 3001 NOTES: (a) FRONT PAN (WHICH IS TO BE RUBBER MOUNTED) WAS NOT FITTED FOR THESE TESTS (b) TORQUE ACTUALLY APPLIED WAS 406 LB-FT. FOR BOTH TESTS. DATA TABLE: RATE FROM REAR WHEELS | TEST No. 3 | TEST No. 4 509 | 509 | 526 814 | 814 | 845 1228 | 1228 | 1328 2610 | 2610 | 2895 1378 | 1378 | 2030 GRAPH: Y-AXIS: TWIST PER 1,000 LB-FT (DEGREES RELATIVE TO REAR WHEELS) X-AXIS: DISTANCE FROM FRONT WHEELS (INCHES) LABELS ON GRAPH: Front Body Mounting Brackets, CENTRE OF CRUCIFORM, BODY MOUNTING BRACKETS, REAR WHEELS, FRONT OF REARMOST CROSSMEMBER | ||