Chart tracking engine complaints for the 4¼ Bentley model during 1939.
| Identifier | ExFiles\Box 131\3\ scan0056 | |
| Date | 1st January 1939 | |
| CHART OF COMPLAINTS 4¼ BENTLEY 1939 JAN FEB MARCH APRIL MAY JUNE Vertical Text (Left): 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 Category 1: ENGINE BEARINGS MOD. B TAKING SLACK OUT OF BEARINGS ONLY Complaint Label: COMPLAINT OF SLIGHT THUMP Data: [FEB] W307 Category 2: MOD. C. DRILLING OF CRANKSHAFT FOR LUBRICATION NEW BEARINGS AC.7 FITTED. N°7 WHITE METAL. AC9 FITTED TO CONRODS. Complaint Label: COMPLAINT OF THUMP BY OWNERS AND TESTERS CONFIRMED BY OIL FLOW TEST LOW OIL PRESSURE. Data: [JAN] Bar: 13, K, P 160, P 158, P 156, W 295 [FEB] Bar: MODC:, 15, K, K 154, P 175, W 313, W 309, W 308, W 305 [MAR] Bar: K, P181, P194, W323, W327 Category 3: ENGINE ROUGHNESS AND TIMING GEAR RATTLE 1750-3000 R.P.M. DEALT WITH BY ALTERATION TO CRANKSHAFT DAMPER LOAD Data: [FEB] Bar: 8, 1, W 315 [MAR] Bar: 10, 3, 3, P198, AVERAGE MILEAGE 31,000, AVERAGE MILEAGE 5,000 [APR] Bar: 9, W 322, AVERAGE MILEAGE 28247 Category 4: DETONATIONS Note (below category 4): NONE UNDER 15,000 Bottom Right Corner: 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).