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).
Photographic study of crankshaft vibration patterns under different balancing conditions and speeds.
Identifier | ExFiles\Box 137\4\ scan0405 | |
Date | 1st December 1931 guessed | |
Top row, left to right: Image 1: 2400, No Balance Weights Image 2: 2400, 95% Balance Middle row, left to right: Image 3: 3300, 95% Balance 41 fms at Periphery Image 4: 2400, No Weights 41 fms at Periphery Image 5: 2400, 95% Balance, 41 fms at Periphery Image 6: 3300, 95% Balance Bottom row, left to right: Image 7: 2400, 1 lb in Couple opposing No 6 Crank Image 8: 2400, No Couple Image 9: 2400, 1 lb in Couple in same direction as No 6 Crank | ||