TRACTOR WEIGHT AND DRAWBAR PULL

Paper #:
  • 200080

Published:
  • 1920-01-01
DOI:
  • 10.4271/200080
Citation:
Moyer, A., "TRACTOR WEIGHT AND DRAWBAR PULL," SAE Technical Paper 200080, 1920, doi:10.4271/200080.
Author(s):
Pages:
7
Abstract:
The best weight for a tractor of given horsepower must be a compromise based upon a mean of the many conditions to be encountered by a given machine or by different machines of the same model. While the weight logically will bear some relation to the drawbar pull, the latter in turn depends upon tractor speed. The next item is weight distribution, which requires the utmost skill of the designer; this is elaborated and diagrams are shown of tractors operating in comparatively firm and in soft ground, ascending a grade and when the drive-wheels are mired. The four-wheel-drive tractor requires a modification of the foregoing analysis and the diagrams are applied to afford a similar analysis for this type.The author's conclusion is that, while careful engineering will make the light-weight tractor of conventional type stable under most conditions, there is a possibility that any future trend toward lighter machines will open the field to other types.
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