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).
Graph showing the results of torsion tests on a 'Myth' frame.
| Identifier | ExFiles\Box 110\2\ scan0061 | |
| Date | 15th December 1943 | |
| TORSION TESTS ON MYTH FRAME NO. 1 TEST (DEC '41) AS RF 2259. RATE BETWEEN FRONT AND REAR WHEELS WAS 384 LB-FT/DEGREE NO. 2 TEST (14.12.43) WITH FRONT MEMBER BOXED IN TO PL 1127. RATE BETWEEN FRONT AND REAR WHEELS WAS 538 LB-FT/DEGREE NOTES a) FRONT PAN (WHICH IS TO BE RUBBER MOUNTED) WAS NOT FITTED FOR THESE TESTS. b) TORQUE ACTUALLY APPLIED WAS 268 LB-FT FOR TEST Nº 1 AND 406 LB-FT FOR TEST Nº 2. Graph Details: Y-Axis: TWIST PER 1000 LB-FT (DEGREES RELATIVE TO REAR WHEELS) Values: 0, 1°, 2° X-Axis: DISTANCE FROM FRONT WHEELS (INCHES) Values: 0, 20, 40, 60, 80, 100, 120, 140 Data Points and Annotations: - At 0 inches (Y-axis): 538, 394 - At approx 28 inches (FRONT BODY MOUNTING BRACKETS): TEST Nº2 812, TEST Nº1 688 - At approx 58 inches (CENTRE OF X): TEST Nº2 1270, TEST Nº1 1140 - At approx 84 inches (3RD BODY MOUNTING BRACKETS): TEST Nº2 2620, TEST Nº1 2420 - At approx 98 inches (REAR WHEELS) - At approx 122 inches (FRONT OF REARMOST CROSSMEMBER): TEST Nº2 1475, TEST Nº1 1140 - On the right: RATES FROM REAR WHEELS LB-FT/DEG. | ||