Abstract
It is meaningful for the analysis of rolling resistance for an ordinary wheel running on soft ground to study the cylindrical wheel or the spherical wheel as a fundamental form of the ordinary wheel. The authors have presented several reports for the cylindrical wheel in this magazine. This time, experiments were made for a spherical wheel driven on soft ground to investigate the mean driving torque to the wheel, the slip ratio, and the amount of sinking, etc. caused by the load carried by the wheel axle. The result is reported on together with the measured result for the cylindrical wheel.
