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).
Continuation of an engine test report noting boost fluctuation, oil leaks, temperature rises, and fuel flow settings before stripping for inspection.
| Identifier | ExFiles\Box 179b\2\ img184 | |
| Date | 21th November 1922 | |
| -2- Hs{Lord Ernest Hives - Chair}/Zps.3/2A.21.11.22. Cont'd.{John DeLooze - Company Secretary} On the last 5 mins. of the 3000 R.P.M. test the boost fluctuated approx. 1"Hg. which is negligible. The engine generally was particularly free from oil leaks, the propeller shaft housing (front bearing) being the only noticeable leak and this was only slight. The freedom from oil leaks is attributed to the use of Castor oil, previous tests at 3000 R.P.M. with K.4 oil have shewn slight leaks from practically all joints. The oil temperature rise across the engine is shewn to stabilise at :- 21°C at 2500 R.P.M. (61°C to 82°C) 30°C at 3000 R.P.M. (60°C to 90°C) with a corresponding water temperature rise of:- 12°C at 2500 R.P.M. 14°C at 3000 R.P.M. The main jet flows for the 20/70/10 + 4 cc fuel is the same as for the Goshawk I altitude rated engines i.e. 45 secs/Pt, which shews the same jet setting will meet the requirements of the engine when used either as full throttle G.L. or rated altitude. Generally the engine ran quite smoothly and consistent throughout, with no indication of un-due stressing. The engine used for the Tests is Kes.S.1023 and is now stripped for inspection. Strip report will follow from the usual sources. Ho/G.H.Farmer. | ||