[quote="CVPost-mmfan55"](quoted from post at 07:22:08 06/22/18) "There in lies my point. The 250hp
Chevy and a 250hp Cummins, both with
1 to 1 direct drive transmission,
will result in vastly different
outcomes."
- Yes indeed the outcomes would be much different. Running without a transmission would have only the rear end reduction. This would be an improper application and none of the engines would be effective to it's potential.
"Horsepower is supposed to
be a statistic at the flywheel. Not
as a result of gearing and
transmissions. When in vocational
school, I also was told the
mathematical formula that was
supposed to be used as to calculate
horsepower. I stand by my statement.
This day and time, seems that
horsepower ratings are based on
whatever formula the builder wants to
use."
- The formula is: HP = Torque x RPM / 5252. It is the result of the engine output and does not change with gearing. Included in my post was the AGT 1500 HP after the 10:1 reduction and the HP ahead of the 10:1 reduction, i.e. at the engine output shaft. The gear reduction increases the torque and reduces the RPM however, HP remains the same. For the formula, the RPM is the RPM of the shaft where the torque is measured.
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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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