Re: Horsepower Question

Posted by Hugh MacKay on March 07, 2007 at 07:58:56 from (216.208.58.138):

In Reply to: Horsepower Question posted by Ben Shipley on March 07, 2007 at 06:46:21:

Ben: I don't think there is such a thing as a set percentage. If you go through the Nebraska tests, you'll find a wide variation. Years ago when I bought new tractors, I always wanted to know 3 items on horse power 1: flywheel hp, 2: pto hp and 3: drawbar hp, and most of that had to come from Nebraska tests. The most efficient power train was the one the would give the highest percentage of flywheel hp from either drawbar or pto.

On the specific question you are asking, ratio of drawbar to pto hp, if you go through the Nebraska test book there are a couple of tractors that made 98% and there have been a few a lot lower than the figures you quoted. Where the average is, I wouldn't venture a guess.

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