Bar chart tracking various engine-related complaints for the 4 1/4 Bentley model during 1939.
| Identifier | ExFiles\Box 131\3\ scan0109 | |
| Date | 30th June 1939 | |
| CHART OF COMPLAINTS 4 1/4 BENTLEY LEFT SIDEBAR CODES: 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 TIMELINE: 1939, JAN, FEB, MARCH, APRIL, MAY, JUNE ROW 1: ENGINE BEARINGS - MOD B - TAKING SLACK OUT OF BEARINGS ONLY - COMPLAINT OF SLIGHT THUMP - Data: W307 ROW 2: LOW OIL PRESSURE - MOD C - DRILLING OF CRANKSHAFT FOR LUBRICATION - NEW BEARING AC7 FITTED No7 WHITE METAL - AC8 FITTED TO CONRODS - COMPLAINT OF THUMP BY OWNERS AND TESTERS CONFIRMED BY OIL FLOW TEST - Data: - JAN: 13 cases (P 160, P 198, P 196, W 285) - FEB: 15 cases (K 154, P 175, W 313, W 309, W 308, W 305) - MAR: cases (P 181, P 194, W 323, W 327) - APR: cases (W 335, W 336) - MAY: cases (P 216, W 348, W 347, W 346, W 341) - JUN: cases (P 288, W 354) - Note: 'K' appears under several bars. ROW 3: ENGINE ROUGHNESS - ENGINE ROUGHNESS AND TIMING GEAR RATTLE - 1750 - 3000 R.P.M. - DELT WITH BY ALTERATION TO CRANKSHAFT DAMPER LOAD - Data: - JAN: 8 cases (W 315) - FEB: 9 cases (W 322). Notes: P.188 AVERAGE MILEAGE 31,000, AVERAGE MILEAGE 5000. - MAR: cases (P 212, 25874). Note: AVERAGE MILEAGE 28247. - APR: cases (11134, 29201). Note: AV 22127. - MAY: cases. Note: FIT 6 VALVE SPRINGS, REMESH GEARS, P.265, AV 34,200. ROW 4: DETONATIONS - One case noted in January. BOTTOM NOTES (under months): - FEB: NONE UNDER 15,000 - APR: 3207 MILES - MAY: 12,110 - JUN: 7866 REFERENCE (BOTTOM RIGHT): GWH {George W. Hancock - Head Chateauroux} I | ||
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).