Posted by Hay hay hay on August 13, 2018 at 18:41:20 from (75.88.179.211):
In Reply to: PHD what's it worth? posted by GEO-TH, In on August 13, 2018 at 11:27:17:
So if your first love is old tractors you might want to take a look at this very basic list where the thinking, research and ideas of a vast number of Phd's over many many years had made your hobby possible:
Physics: levers, gear ratios, gravity, friction devices Chemistry: combustion, metallurgy, rubber compounds, lubricants Thermodynaics: radiators, coolant flow, heat exchange Mining , Iron ore, smelting, steel making and processing Foundry sciences, gear cutting, machining Steel; specific properties; Aluminum production Electric generation for manufacturing processes Giant ships for oil and steel transport concrete for roads, lawyers for pipeline right of ways Oil drilling, pumping, refining, shipping Semiconducters for the instruments and communication Satelittes to move the communications.
So what tractors would we have without this scientific knowledge?
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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