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).
Blueprint graph showing chassis and body torsion test results for a Wraith chassis.
| Identifier | ExFiles\Box 99\2\ scan0068 | |
| Date | 17th June 1937 | |
| CHASSIS & BODY TORSION TESTS WRAITH CHASSIS 26 G VI FRAME 0.128" THICK - WITH LARGE HOLES AND 0.010" THICKER CROSS WITH FRONT CROSS-CHANNEL WITHOUT HYSTERESIS 10,000 LBS-INS PER DEGREE TWIST 17 JUNE 1937 W. 10 Y-AXIS LABELS: 57,000 LBS-INS 42,750 LBS-INS 28,500 LBS-INS 14,250 LBS-INS 6°, 5°, 4°, 3°, 2°, 1°, 0° X-AXIS (TOP): 15.5" 17" 17.5" 26" 26" 18.5" 30.5" 26.5" X-AXIS (BOTTOM): FRONT CROSS MEMBER FRONT AXLE DASH BODY BRACKET BODY BRACKET REAR SPRING SHACKLE ANCHORAGE REAR AXLE | ||