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).
Stud failure in the front suspension and proposing modifications to the torque arms.
| Identifier | ExFiles\Box 100\1\ scan0190 | |
| Date | 9th September 1938 | |
| 446. HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} c. Da{Bernard Day - Chassis Design}/JD.{J. Draper - Frames} Rm{William Robotham - Chief Engineer}/AFM{Anthony F. Martindale}3/R.9.9.38. B.III Lower Triangle Levers. Front Suspension. With reference to the scheme FCD.881, we have had a stud fail at the junction between torque arm and lower lever. This may have been due to assembly stresses. With the new stay scheme, unless the pieces are very accurately machined, tightening up these studs will stress them in bending. We would like a pair of torque arms machined to a radius of 9", instead of flat, at their junction with the lower lever. (The end of the torque arm will become a cylinder with vertical axis). These torque arms should then be tested on the bump chassis. We would like arms FCD.881 so modifying if they are made in time for the next bump test; if not present type arms can be used. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||