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 plotting torque versus twist angle to compare the torsional rigidity of different frame configurations.
| Identifier | ExFiles\Box 14\8\ Scan071 | |
| Date | 5th July 1928 guessed | |
| FOR THESE TESTS THE FRAME WAS SUPPORTED AT THE REAR ON JACKS THEREBY ELIMINATING THE FLEXIBILITY OF THE REAR SPRINGS. LOAD LEGEND: SOLID LINE: STANDARD FRAME DASHED LINE: PLUS X MEMBER UNDER RADIATOR DASH-DOT LINE: - PLUS 4 POINT MOUNTING Y-AXIS: TORQUE LBS. FT. X-AXIS: FRAME TWISTED FROM HORIZONTAL DEGREES. θ FIGURES REPRESENT MEAN OF FRAME TWISTED FIRST CLOCKWISE AND THEN ANTI-CLOCKWISE. Handwritten text (left margin): Pulling Space | ||