Study on the wheel of garden tractors (No. 2)

Relation between shapes of lugs and rolling resistance

Abstract

We tested the relation between shapes of lugs and rolling resistance on the garden tractor under the same three conditions as Report 1. Shapes of lugs were same as report No, 1. The result may be summarized as follows.
1) Increasing the height of lugs, increased the rolling resistance but the efficiency was almost equal.
2) When the angles of spade lugs were small, rolling resistance was small under the well packed soil. Angle of the spade lugs hardly effect to the efficiency of the wheel.
3) Rolling resistance of the 32 and 40 tooth lugs were nearly same.
4) Extension angle lugs increased the efficiency materially on the pulverized soil.