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).
Rejection of poor quality steel castings and proposing a new design with forgings.
| Identifier | WestWitteringFiles\D\May1920\ Scan7 | |
| Date | 17th May 1920 | |
| To BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} Copy to C.I. " " BN.{W.O. Bentley / Mr Barrington} " " DA.{Bernard Day - Chassis Design} " " OY. " " HS.{Lord Ernest Hives - Chair} ORIGINAL. x4042 RE STEEL CASTINGS. x3419 x4062 x3431 RECEIVED 17 MAY 1920 In confirmation of the discussion that took place here with regard to the above, the following conclusions were arrived at After examination of the specimens brought by Mr. Hives of the exhaust nazzle, of the cut-out flange, and of the engine feet, I had the impression that we should accept no more castings from the present source, the reason being they are ridiculously heavy and very unsound, in addition probably the cost is prohibitive. The exhaust nozzle would result in breaking the silencer pipe. I may add that the pieces were never intended to be the thickness that they have become, but it is useless to go into the history of the parts, and the following remedy was suggested. The engine foot was to be made of two simple forgings with a probability of the flange part being a sheet metal pressing. An extra forging was added to the foot which carried the steering box. Mr. Day, who was also present, was asked to draw this from suggested design, and get models made for testing as quickly as possible. Wooden patterns should be put in hand at once, but before handing to the die sinkers they should have bronze castings made from them which could be subject to test on the bumping rig. The engine foot is the only important piece for mechanical strength and this is very important. (Contd.) | ||