Chart tracking engine failures for 3 1/2 and 4 1/4 Bentley models for the year 1939.
| Identifier | ExFiles\Box 131\3\ scan0080 | |
| Date | 1st June 1939 guessed | |
| CHART OF ENGINE FAILURES 3 1/2 AND 4 1/4 BENTLEY 1939 OWNERS NAME WHERE FAILED (1) E - ENGLAND A - ABROAD JAN FEB MARCH APRIL MAY JUNE NATURE OF FAILURE (1) CRANKCASE BROKEN DUE TO FAILURE OF CONNECTING ROD M - MILEAGE (2) E. {Mr Elliott - Chief Engineer} ENGLAND A. {Mr Adams} ABROAD E. {Mr Elliott - Chief Engineer} SIR JAMES HERON(Experimental 6 CYL OHV 40/50 WITH PNEUMATIC F.W.B. air pump on camshaft, then Servo) WALKER BT. {Capt. J. S. Burt - Engineer} (2) NATURE OF FAILURE NO 2 EXHAUST VALVE HEAD BROKEN PISTON BROKEN GWH {George W. Hancock - Head Chateauroux} 2 | ||
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).