Study on the Wheels of the Small Garden Tractor (Tiller Type) (No. 1)

On the Effect of the Static Load on the Performance of Pneumatic Tires

Abstract

Effects of the static vertical loading on the 4.00-8 pneumatic tire attached tiller type garden tractor on the performance of tire were tested on the hard grass land, hard road, dry soil, wet soil and pulverized soil. The results were as follows,
(1) Increasing the loading on the tire, increased the draft.
(2) On the hard grass land and hard road, the tractive efficiencies were equal at all loads on tire.
(3) On the dry clay loam soil, the tractive efficiency decreased by adding the loads on the tire.
(4) On the wet clay loam soil and pulverlized soil, the tractive efficiecy increased by adding the loads on the tire.
(5) The slip of the tire was 15-20% at most tractive efficieney.