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).
Test report comparing the number of steering wheel turns required over a 12-mile run under different car configurations.
| Identifier | ExFiles\Box 95\1\ scan0155 | |
| Date | 10th December 1934 | |
| -2- Ha/Gry.{Shadwell Grylls}21/RM{William Robotham - Chief Engineer}:10.12.34. We got :- Condition of Test. Turns of Steering Wheel for 12 mile run. (1) Car to drawing but with solid side steering tube. 25.6 (2) As (1) but with dunbell fitted. 17.3 (3) As (1) but rubber sprung O.S. tube. 9.1 Ha/GRY.{Shadwell Grylls} | ||