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 comparing the torsional rigidity of different frame configurations under load.
| Identifier | ExFiles\Box 29\1\ Scan340 | |
| 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 STANDARD FRAME PLUS X MEMBER UNDER RADIATOR PLUS 4 POINT MOUNTING TORQUE LBS. FT. FIGURES REPRESENT MEAN OF FRAME TWISTED FIRST CLOCKWISE AND THEN ANTI-CLOCKWISE. FRAME TWISTED FROM HORIZONTAL DEGREES θ Filing Space | ||