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 and diagrams comparing the torsional rigidity of the Hispano and E.A.C.7 chassis frames.
| Identifier | WestWitteringFiles\Q\2April1927-June1927\ 183 | |
| Date | 13th January 1927 | |
| TORQUE LBS / FT. 1800 1600 1200 800 400 HISPANO FRAME. E.A.C.7 FRAME. REAR AXLE CLAMPED SOLID TO FRAME. FRAME DEFLECTION ANGLE θ 1° 2° 3° 4° 3.5' P θ FRAME RIGIDITY AND PERIODICITY. ROLLS-ROYCE LTD EXPERIMENTAL 13 JAN 1927 DRAWING OFFICE | ||