Perhaps the engineers relied too much on their slide-rules rather than extensive field testing. They may have assumed that with 50% more cylinders and no increase in displacement, the individual power impulses would have nearly the same amplitude in a higher output engine. On top of that, the higher power of the new engines came with a higher RPM which would have no effect on the slow speed bearings.
Some things can't be predicted. It's easier now-a-days with computer modeling. This is why we have 10 day weather forecasts as opposed to 2-3 day forecast in the '50s.
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Today's Featured Article - The David Brown Rose Badge - by Samuel Kennedy. In the 13th century civil war was raging in England. Two English noblemen were involved in a conflict which became known as the War of the Roses. The Duke of York had as his emblem a white rose and the Earl of Lancaster had a red rose. Today the white rose is the official emblem of the county of Yorkshire and the red rose has been adopted by the neighboring county of Lancashire.
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