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).
Failure of front wing stays on car 14-G-4, attributing it to abnormal fatigue from excessive twisting.
| Identifier | ExFiles\Box 107\4\ scan0178 | |
| Date | 1st August 1929 | |
| X5390 HS{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} SECRET. DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}1/M8.1.29. FRONT WING STAYS - 14-G-4. Thank you for your HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}1/LG3129. We note that all the front wing stays have broken on 14-G-4. These were standard 20HP. stays, and the lamps were no heavier than those we have previously fitted on some 10,000 mile cars. We would like any further information which would help us to realise the cause of this failure, but we suggest that due to the excessive twisting of the front of the car peculiar to 14-G-4. these pieces have been abnormally fatigued. There is a possibility of their holding up when we have cured this phenomenon. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||