Posted by IA Leo on October 15, 2009 at 17:57:21 from (67.224.28.37):
My career as a machine designer was always with top management being critical of "over engineering" when I put something into the design to make it wear longer or easier to repair. But when I constantly see on this board the "souping up" of 50 year old tractors and the ridiculous increases in loads the old gears, shafts and bearings can handle, my conclusion is that the old farmers went to the bank to buy machinery that was "over designed". And just to add sour grapes, many of the current day enthusiasts of really old iron never had to make a living with the stuff. Leonard feeling grumpy tonight!
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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