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).
Results of a 100-hour test run on an aluminium cylinder head for a Goshawk engine.
| Identifier | ExFiles\Box 10\1\ 01-page64 | |
| Date | 23th February 1933 | |
| K.D.C./E.B. 23.2.33 H.S.K. 15456. Goshawk. Referring to our test on the aluminium cylinder head which has now run for 100 hours we have to advise you as follows :- The total running time on the unit to date is 176 hours, the last 100 hours of which has been with the aluminium head. During the last 100 hours run we have had three voluntary stops only, one to change the plugs, one to examine the valve gear and one to fit new exhaust pipes. During the whole of this period no adjustments of any description have been made to the engine. [Watermark Text] ROLLS-ROYCE LTD 1904 CLAUDE & CROWLEY | ||