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).
Design blueprint for a balance-weight crankshaft with multiple section views and design features.
| Identifier | ExFiles\Box 14\2\ Scan071 | |
| Date | 22th November 1928 | |
| BALANCE - WEIGHT CRANKSHAFT. FEATURES: 1). JOURNALS 2,3,5&6 HAVE 1/2 SIZE BALANCE WEIGHTS INTEGRAL WITH SHAFT. 2). JOURNALS 1,4,&7 HAVE FULL SIZE BALANCE WEIGHTS, DETACHABLE. PINS CAN NOW BE GROUND. 3). BALANCE INCLUDES BIG ENDS. 4). TORSIONAL PERIOD ESTIMATED AT 4,500. 5). GREATER BIG END BEARING AREA TO COMPENSATE FOR REDUCED MAIN BEARING LOADS. RIVETED ON 1.600 1.750 3.000 2.250 1.100 SECTION AA{D. Abbot-Anderson} LOOKING 7.000 DIA 3.300 SECTION BB LOOKING SECTION CC LOOKING STAMP: 25 NOV 1928 HANDWRITTEN: TJW 22/11/28 | ||