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).
Note specifying a 100% increase in the section modulus of a lever to manage stress.
| Identifier | ExFiles\Box 153\4\ scan0161 | |
| Date | 20th August 1943 guessed | |
| -2- The section modulus should be increased 100% . stress in this lever is not to exceed that in the lever at the other end of the side steering tube and on the front pan. Ev.{Ivan Evernden - coachwork} | ||