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 bolts on Bentley front wing stays.
| Identifier | ExFiles\Box 82\4\ scan0017 | |
| Date | 19th November 1934 | |
| x4553 By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Whym. Hs{Lord Ernest Hives - Chair}/Whym.4/MA.19.11.34. BENTLEY FRONT WING STAYS. We have had three occasions recently where the 1/4" bolt holding the front wing stay to the frame has broken off when tightening up the nuts. This has occurred without any undue leverage being used, the sample one herewith being practically new bolt that sheared off whilst being tightened up with an ordinary flat spanner. The trouble has onlybeen in evidence since the fitting of the cross member between the headlamps and the strain on the bolts caused through frame distortion etc., is too great for them to handle. This is borne out by the fact that after tightening up all wing stay bolts a long run on the road will stretch the bolts a quarter of a thread necessitating the retightening of all nuts. This calls for design attention. Hs{Lord Ernest Hives - Chair}/Whym. | ||