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).
Modifications to the Goshawk II engine's oil piping and oil pump relief valve.
| Identifier | ExFiles\Box 77\2\ scan0078 | |
| Date | 24th March 1921 | |
| R.R. 235A (100 T) (S.H. 768. 16-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2947 X 4235 Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} c. to CJ. c. to Wor{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} c. to BY.{R.W. Bailey - Chief Engineer} c. to EFC. E1/G24.3.21. X.4232 X.4235 RE OIL PIPING AND OIL PUMP RELIEF VALVE GOSHAWK II. We send you herewith drawing No. LeC.1368 shewing the above. This drawing modifies the pump cover shewn on our previous scheme LeC.1361, this part being made in gunmetal now instead of aluminium; and having the relief valve on it. This drawing also asks you to add a feature to the wheelcase and crankcase which will create a bath of oil opposite the intermediate gear. This bath is kept supplied by the discharge from the pump, and is distributed over the timing gear by reason of the intermediate wheel dipping into it. This drawing also modifies the main bearing oil supply pipe at one of its fittings, the fitting in question being used as indictaed on LeC.1368 for making the main oil pipe connection. It is also required that the oil connection of the cylinder head to the valve rocker shaft shall be moved either now or when convenient, from the front end to the rear end of the cylinder head. The object of this latter alteration is to use the banjo oil connection to the head as a starting off place for the oil pipe which runs to the oil pressure gauge on the instrument board. Would you kindly make this banjo connection as shewn in the sketch that is, formed with a union on it for the oil gauge connection:- | ||