Farmall & IHC Tractors Discussion Board |
Re: Horsepower Question
[ Expand ] [ View Replies ] [ Add a Reply ] [ Return to Forum ]
Posted by Bob M on March 07, 2007 at 07:50:46 from (151.190.254.108):
In Reply to: Horsepower Question posted by Ben Shipley on March 07, 2007 at 06:46:21:
Ben – PTO horsepower is essentially the engine’s net flywheel horsepower less the (relatively small) transmission losses thru the PTO driveline. Drawbar HP on the other hand is the horsepower available to do “pulling” work. It is the engine net flywheel horsepower LESS losses in the transmission, tire friction/slippage loss, and the HP required to physically move the tractor over the ground. The last two items can vary considerably depending on the gross weight of the tractor, the nature of the ground being covered (soft and loose vs hard and firm), tire design/tread pattern, etc. Your suspicion these losses can consume 15% to 25% of a tractors gross flywheel HP not far off (look at a few Nebraska Tractor Test summaries sometime!) Bottom line: If you want to compare a tractor’s ability to do pulling work in the field, drawbar HP is the number you want to be looking at. Drawbar HP is what truly “hauls the mail”.
Replies:
Home
| Forums
Today's Featured Article -
Memories of an IH Super A When I was ? up to 10, I worked on my Papaw's farm in Greeneville, TN every summer. As I grew older (7), it was the thrill of my day to ride or drive on the tractor. My Papaw had a 1954 IH Super A that he bought to replace a Cub. My Papaw raised "baccer" (tobacco) and corn with the Super A, but the fondest memory was of the sawmill. He owned a small sawmill for sawing "baccer" sticks. The Super A was the powerplant. When I was old enough (7 or 8), I would get up early and be dressed to
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
Copyright © 1997-2024 Yesterday's Tractor Co. All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|