Drawbar pulling force has very little to do with the engine's horsepower. Given enough weight for traction, suitable tires to put the force to the ground, and low enough gearing even a small, low-powered engine can pull a huge load. The problem is that it won't be able to do it very fast. A good example is an electric winch that can pull 10000+ pounds with a motor with just a couple of horsepower. In order to pull a certain load at a certain speed, however, requires a certain amount of engine horsepower. A tractor is designed to provide drawbar pulling force at relatively low ground speeds so as a result the needed engine power is also relatively low. On the other hand, road-going vehicles are expected to maintain speed up hills at 70-80 mph which requires quite a bit of power. This large amount of engine power, though, doesn't mean the truck will pull like a tractor at low speeds because it won't be able to get enough traction to make anywhere near full use of the engine's potential. An engine is only making full power at wide open throttle with the engine at the rated speed which for a car or pickup very rarely occurs in normal use. On the other hand, a tractor engine is designed to produce full rated power non-stop for hours on end. To allow for this type of usage the tractor engine runs at far lower speeds which limits the amount of power it can produce.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
... [Read Article]
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.
