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 chassis and body torsion tests on a Packard chassis with front wings.
| Identifier | ExFiles\Box 86\4\ scan0232 | |
| Date | 8th June 1937 | |
| CHASSIS & BODY TORSION TESTS. PACKARD CHASSIS. WITH FRONT WINGS. WITHOUT HYSTERESIS. 9,000 LBS-INS PER DEGREE TWIST. P 4 8th JUNE 1937. 14" 18.125" 12.5" 31.5" 25.125" 17.375" 18.75" 29.375" LBS-INS 50,437.5 33,625 16,812.5 6° 5° 4° 3° 2° 1° 0 FRONT OF CHASSIS FRONT AXLE FRONT TORSION BAR ANCHORAGE CRUCIFORM FRONT END CRUCIFORM CENTRE REAR SPRING ANCHORAGE CRUCIFORM REAR END REAR AXLE | ||