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).
Proposing the standardization of a small hexagon tube and new movable bonnet openings for weight reduction and improved safety.
| Identifier | ExFiles\Box 149a\3\ scan0090 | |
| Date | 5th June 1931 | |
| To R.{Sir Henry Royce} from Sg.{Arthur F. Sidgreaves - MD} Sg{Arthur F. Sidgreaves - MD}10/E5. 6. 31. - 2 - out in the blue print attached to the report referred to. and there would appear to me to be no doubt (so far as my lay mind can see it) that we ought to standardise the small hexagon tube USA. having the .265 centres and 18 dents. This would give us a very substantial reduction in weight and at the same time give considerably better results from the point of view of a margin of safety than would be effected by the adoption of the larger ones .309. If we could adopt these and have the new specially designed WW mvable openings in the sides of the bonnet one would feel that we were on fairly safe ground so far as this particular complaint is concerned. Sg.{Arthur F. Sidgreaves - MD} | ||