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).
Mr. Royce's conclusions on different methods for fixing the Goshawk 11 front dumb iron.
| Identifier | ExFiles\Box 75\3\ scan0343 | |
| Date | 8th May 1922 | |
| X.4260. To Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to BY.{R.W. Bailey - Chief Engineer} c. to Hs.{Lord Ernest Hives - Chair} E5/MI 8.5.22. GOSHAWK 11. FRONT DUMB IRON. X.4260. With reference to the above, on consideration of the last scheme made, Mr. Royce has come to the conclusion that it would be better to endeavour not to work in the inside of the dumb iron at the front end, but to use a single bolt or rivet. To this end we send you herewith drawing No.LeC.1579 shewing the proposals put forward in which an ordinary long rivet, a large hollow rivet, and a taper bolt are all shewn alternatively for holding the front end. It should be distinctly understood that these are not all to be made at once, but the cheapest and simplest method should be tried first. They are all good production jobs but the plain hot riveting should be found to be least costly if it can be done satisfactorily, and Mr. Royce would like this tried first. The hollow cold rivet for the front end should be tried as an alternative to the method just mentioned, while the long taper bolt should be held in reserve in case the other two cannot be carried out satisfactorily, or fail on test. With regard to the remaining portion of the fixing, a hot riveting is desired for the upper and lower members of the side channel, but should this not be satisfactory short taper bolts may be used as shewn. It is thought that the fixing to the web of the side channel can in all cases be made by riveting. E.{Mr Elliott - Chief Engineer} | ||