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 of chassis and body torsion tests for the Wraith 'Bumper' chassis.
| Identifier | ExFiles\Box 8\10\ 10-page135 | |
| Date | 10th June 1937 | |
| CHASSIS & BODY TORSION TESTS WRAITH 'BUMPER' CHASSIS FRAME 0.080" THICK NO LARGE HOLES WITHOUT HYSTERESIS 10,000 LBS-INS PER DEGREE TWIST W 8 10 JUNE 1937 TWIST 7° 6° 5° 4° 3° 2° 1° 0° 57,000 LBS-INS 42,750 LBS-INS 28,500 LBS-INS 14,250 LBS-INS FRONT CROSS-MEMBER FRONT AXLE DASH BODY BRACKET REAR SPRING SHACKLE ANCHORAGE REAR AXLE 15.375" 18.75" 19.5" 26.5" 25.25" 19.25" 29.75" 26.5" | ||