Posted by Bob M on October 11, 2012 at 15:27:35 from (74.67.191.50):
In Reply to: Steam power posted by gtractorfan on October 11, 2012 at 13:24:49:
Those are photos of the Pennsylvania RR's #6200 turbine locomotive that ran for a few years after WWII.
It was powerful indeed - 6,000 HP at high speed speed. However it lacked the low speed lugging power of a reciprocating (traditional) steam locomotive. Also it had a prodigious thirst for both coal and water - notice the enormous 8 axle tender to carry water and fuel. This and high maintenance costs doomed the unit to the scrap yard by about 1950.
Unfortunately steam turbine technology would suffer from the same disadvantages in a large farm tractor. In addition there would be operator licensing requirements and routine inspection issues (on account of the boiler being a fired pressure vessel), EPA air emissions requirements, etc. all resulting in even higher operating costs.
Bottom line is a modern steam tractor would be neat to see. But the economics simply are not there!
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