Cause of fractures in frame tie brackets and the proposed manufacturing solution.
| Identifier | ExFiles\Box 47\2\ Scan138 | |
| Date | 5th August 1929 | |
| Hm {Capt. W. Hallam - Head Repairs} NRC {N. R. Chandler} c. Hs. {Lord Ernest Hives - Chair} X4117. BY {R.W. Bailey - Chief Engineer} /4/G.5.8.29. 1800 . 45 CHASSIS 3-LC. MRS. HOYER. -------------------------- We think the fractures of frame tie brackets F.7012/3 are due to the production of a sharp corner, undercut as well, due to producing a spot faced surface for the head of the bolt or the nut for same. I am therefore arranging to produce the surface at this point for the bolt/head or the nut by milling right across the piece. In addition I am introducing a .100" plus 25 radius between the flange of the bracket and the boss. This I think will clear up the trouble. BY. {R.W. Bailey - Chief Engineer} | ||
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).