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).
The condition of a crankshaft for chassis 3.BU.144, including measurements of main journals and crank pins.
| Identifier | ExFiles\Box 146\5\ scan0106 | |
| Date | 21th February 1939 | |
| 21.2.39 CHASSIS N° 3.BU.144 - Lord SOMERS (Mileage: 36.165 miles) REPORT UPON CONDITION OF CRANKSHAFT MAIN JOURNALS 1 2 3 4 5 6 7 Maximum diameter 2.747" 2.7465" 2.7465" 2.747" 2.7465" 2.747" 2.7475" Minimum diameter .747 .7465 .7465 .747 .7465 .747 .7475 Ovality - - - - - - - CRANK PINS 2.2475" 2.2475" (2.2475" .231) 2.2475" 2.2475" --- | ||