Posted by NCWayne on November 03, 2012 at 21:55:32 from (69.40.232.132):
In Reply to: green cars posted by mike plotner on November 03, 2012 at 20:47:46:
Read an article several years back where a study had been done to determine what vehicles were really 'green'. The results were determined by the 'cost to the environment' created by everything from the resources used by the engineers as they designed the vehicle to the resources used while the vehicle was in use, and ultimately to the resources used to recover any part of the vehicle that was recyclable.
End result was that a Hummer was about twice as 'green' as a Prius, in total cost to the environment in the way of resources used from inception, though a a normal life expectancy, and on to the scrapper. In the end though the most environmentally friendly vehicle was an old, origional VW bug. It's total cost was about half that of the Hummer, or about 4 times less than that of the Prius.
On a larger level, got a customer that moth balled an old crane for a newer one. Per the operator the old machine used 30 to 40 gallons of fuel per day and moved X amount of material. The new machine, in turn, used 130 to 140 gallons per day and moved about half the total amount of material the old machine did.....But it had A/C.........
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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