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).
The 'Vulture' Cylinder Head, referencing drawing LeC.1297.
| Identifier | ExFiles\Box 74\4\ scan0054 | |
| Date | 28th October 1920 | |
| R.R. 285A (100 T) (S.H. 159. 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2200 X3548 42 To Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to CJ. " " Bn.{W.O. Bentley / Mr Barrington} " " Hs.{Lord Ernest Hives - Chair} " " By.{R.W. Bailey - Chief Engineer} " " EFC. X.3841. RE "VULTURE" CYLINDER HEAD. We send you herewith drawing LeC.1297 shewing the above. The sectional plan is not a true plan, but the plane of the section has been considerably vaired in height from place to place for the purpose of shewing clearly the con-formation of the passages. Six oil drain tubes are provided for carrying away the oil that exdues from the camshaft bearings. These tubes should be made from mild steel copper plated on the outside, the plating being carried to the extreme ends of the tubes so as to be sealed by the bosses of the castings. The cylinder crown should be machined on the panel marked BB. The radius in the corner of the crown varies from 1.15 to .100", according to the amount of room between the flat machined panel BB and the wall of the crown. The mouth of crown should be bored out to 4.45 diameter as far as possible. The rough cast surface which cannot be machined should, have been smoothed by sand-blasting as a first operation. The distribution of the water ports communicating with the cylinder block will be dealt with/the drawing of the latter. E.{Mr Elliott - Chief Engineer} | ||