Modification to the Wraith II front suspension main forging fixing bolts.
| Identifier | ExFiles\Box 9\5\ 05-page025 | |
| Date | 9th February 1937 | |
| SECRET. To BY. {R.W. Bailey - Chief Engineer} 1044 Copy to Dr. Rm. {William Robotham - Chief Engineer} RHC. {R. H. Coverley - Production Engineer} HFS. Rm {William Robotham - Chief Engineer} /Hld. Rm {William Robotham - Chief Engineer} /hes. Rm {William Robotham - Chief Engineer} /Cry. [Signature] Wraith II Front Suspension Main Forging Fixing. It has been found that the large .625" diameter bolts are very inelastic and the nuts stop very solid. The bolts are large in diameter in order to provide a large bearing surface to the thin material which they hold. The bolts could be hollowed out by boring, but this operation would add expense. We therefore suggest that two holes at right angles be drilled for the castle nuts to overcome the difficulty of split pinning the nuts. The nuts are standard castellated nuts K.4214. Ev. {Ivan Evernden - coachwork} | ||
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).