Experimental Studies on Optimum Travel Reduction and Maximum Work of Wheel Type Tractor on Sandy Soil

Abstract

Drawbar-pull tests were carried out to study the relationshipships between travel reduction and drawbar pull using pneumatic tyres and model rigid wheels in our laboratory. As the result, relation between drawbar-pull/weight and travel reduction could be expressed by expression (1), and the optimum travel reductions which give the maximum work of wheel type tractors, and the optimum drawbar-pull ratios were recognized on drawbar-pull/weight-travel reduction curves.
The optimum travel reductions depend upon the coefficient B as shown in expression (7).