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).
Blueprint chart tracking reported mechanical faults by month for the first half of 1939.
| Identifier | ExFiles\Box 107\2\ scan0077 | |
| Date | 30th June 1939 guessed | |
| 1939 MONTHS: JAN, FEB, MARCH, APRIL, MAY, JUNE SECTION 1: REAR SILENCER COMPLAINT: BAFFLE LOOSE RATTLES Data points: P160, P159, P158 SECTION 2: REAR AXLE OIL LEAKS Data points: P206 SECTION 3: REAR AXLE NOISY DUE TO: A - FAULTY THRUST RACE B - FAULTY ROLLER RACE C - THRUST RACE CAGE BROKEN D - BROKEN BALLS IN THRUST RACE E - NO PRE LOAD F - GEAR TEETH PICKED UP G - NOSE BEARING H - EXTENSION FRACTURED FAULTY BEDDING Additional text: SLACK IN DIFF Data points: P160, W292, W255, P166, W324, W328, B&C, P221 SECTION 4: REAR AXLE DRIVING SHAFT FAILURE Data points: W330, W325 SECTION 5: REAR AXLE DRIVING DOG RATTLE CAUSES: A - RATTLE CHANGED B - BROKEN C - LUBRICATED D - OVERSIZE FITTED Data points: W287, 005, 003, P206, -003 NOTES (Right Side): AVERAGE MILEAGE JAN 11000 FEB 4361 APRIL 5761 LOWEST MILEAGE G1 4080 THRUST RACE NOW BEING FITTED I.E. IMPROVED CAGE INCREASED PRE LOAD DOUBLE ROLLER RACE BEING TRIED. NOTE A SIGNIFIES DRIVING DOGS CHANGED FROM O.S. TO N.S. & N.S. TO O.S. | ||