Bar chart tracking various engine complaints for the 4 1/4 Bentley model during the first half of 1939.
| Identifier | ExFiles\Box 131\3\ scan0081 | |
| Date | 15th May 1939 guessed | |
| CHART OF COMPLAINTS 4 1/4 BENTLEY GRID COLUMNS: 1939, JAN, FEB, MARCH, APRIL, MAY, JUNE LEFT MARGIN INITIALS: SG {Arthur F. Sidgreaves - MD} , HS {Lord Ernest Hives - Chair} , C, By, RM {William Robotham - Chief Engineer} , MX {John H Maddocks - Chief Proving Officer} , RHC {R. H. Coverley - Production Engineer} , H, SR, LA {L. A. Archer} , K {Mr Kilner} /KC, GWH {George W. Hancock - Head Chateauroux} /K ROW 1: ENGINE BEARINGS DESCRIPTION: MOD B. TAKING SLACK OUT OF BEARINGS ONLY. COMPLAINT: COMPLAINT OF SLIGHT THUMP. DATA: FEB: W307 ROW 2: MOD C. DESCRIPTION: DRILLING OF CRANKSHAFT FOR LUBRICATION, NEW BEARINGS AC7 FITTED, NO 7 WHITE METAL, AC9 FITTED TO CONRODS. COMPLAINT: COMPLAINT OF THUMP BY OWNERS AND TESTERS, CONFIRMED BY OIL FLOW TEST, LOW OIL PRESSURE. DATA: JAN: Bar value 13. P 160, P 158, P 156, W 295, K. {Mr Kilner} FEB: MODC. Bar value 15. K 154, P 175, W 313, W 309, W 308, W 305, K. {Mr Kilner} MAR: P181, P194, W323, W327, K. {Mr Kilner} MAY: W 335, W 336, K. {Mr Kilner} ROW 3: ENGINE ROUGHNESS AND TIMING GEAR RATTLE DESCRIPTION: 1750 - 3000 R.P.M. DEALT WITH BY ALTERATION TO CRANKSHAFT DAMPER LOAD. DATA: JAN: Bar value 8. FEB: Bar value 7. W 315. MAR: Bar values 10, 3, 5, 9. P198, AVERAGE MILEAGE 31,000, AVERAGE MILEAGE 5,000. W322. MAY: AVERAGE MILEAGE 25247, P212, 25874. ROW 4: DETONATIONS DESCRIPTION: NONE UNDER 15,000. DATA: MAY: 3207 MILES. BOTTOM RIGHT: GWH {George W. Hancock - Head Chateauroux} 1 | ||
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).