On the Tractive Force of Small Farm Tractor under Various Conditions

Abstract

The tractive faces of the wheel type 15 PS Japanese tractor were tested under the eight soil conditions. It was found that the tractive force per loads on the rear wheels (i. e. coefficient of tractive force) was almost constant under the same soil condition and it was not influenced by additional weights or travel speed. And we found that the difference in tractive force between 7-24 tire and 8-24 tire was very small on each soil condition.
The results of tests on the coefficient of tractive force were shown in Table 1. The tractive force were measured at 20% slippage of the wheels.