American Society of Agricultural and Biological Engineers



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CHAPTER 16 Weight, Transfer, Traction, and Safety

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Chapter 16, Pages 417-450 (doi:10.13031/2013.24136) in Chapter 16 in Engine and Tractor Power, 4th edition. St. Joseph, Michigan: ASAE. . Copyright 2015 American Society of Agricultural and Biological Engineers, St. Joseph, Mich.
Authors:   Carroll E. Goering and Alan C. Hansen
Keywords:   Moments and Center of Gravity, Weight Transfer, Tractor Tires, Basic Concepts of Traction, Predicting Tractive Performance, Ballasting for Traction, Traction Prediction Spreadsheet, Spreadsheet for a Tractor-Implement Combination, Limits to Performance, Sideways Overturns, Tractor Safety
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The word tractor, derived from the "traction engine," indicates the importance early tractor designers place on developing traction. That importance has not diminished. Engine power can be converted to drawbar power only if the drive wheels develop traction. Factors such as tire selection, hitching, ballasting, and implement selection determine whether engine power is transferred to the drawbar efficiently or inefficiently. By learning the traction terminology and principles presented in this chapter, you will gain useful insight about how to attain high pull and tractive efficiency from a tractor. Techniques for estimating a tractor's potential pulling ability using data given in a Nebraska or OECD Tractor Test will be examined.

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