Bar chart tracking monthly complaints for the 4 1/4 Bentley engine from January to June 1939.
| Identifier | ExFiles\Box 131\3\ scan0088 | |
| Date | 30th June 1939 | |
| CHART OF COMPLAINTS 4 1/4 BENTLEY 1939 JAN FEB MARCH APRIL MAY JUNE Side Margin: 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 MOD B TAKING SLACK OUT OF BEARINGS ONLY Complaint: COMPLAINT OF SLIGHT THUMP Data: [FEB] W307 Row 2: MOD C DRILLING OF CRANKSHAFT FOR LUBRICATION NEW BEARING AC7 FITTED N°7 WHITE METAL ACB FITTED TO CONRODS Complaint: COMPLAINT OF THUMP BY OWNERS AND TESTERS CONFIRMED BY OIL FLOW TEST LOW OIL PRESSURE Data: JAN: 13<, K, P 160, P 58, P 156, W 285 FEB: 15<, K, K 54, P 175, W 313, W 309, W 308 MARCH: K, P 181, P 194, W 323, W 327 APRIL: K, W 335, W 336 MAY: K, P 216, W 348, W 347, W 346, W 87 JUNE: K Row 3: ENGINE ROUGHNESS AND TIMING GEAR RATTLE 1750 - 3000 RPM DEALT WITH BY ALTERATION TO CRANKSHAFT DAMPER LOAD Data: FEB: 8<, W 315 MARCH: 9<, W 322, 1, 3, 3, P 188, AVERAGE MILEAGE 31,000, AVERAGE MILEAGE 5000 APRIL: AVERAGE MILEAGE 28247, P 212, 25874 MAY: AV 22127, 1134, 29201 Row 4: DETONATIONS Data: MARCH: NONE UNDER 15,000 APRIL: 3207 MILES MAY: 12110 Bottom Right Corner: 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).