In the area of GE Bohor in April 2010, skidding up was conducted with adapted agricultural tractor Landini Vision 105 and the skidder Woody 110. The research was conducted in order to determine wheel slip and damage to roads after the harvest of timber. Measurements were performed separately for each tractor load (~ 2 m3 and ~ 4 m3). We assessed the difference between use and non-use of wheel chains and for different tire pressure. Measurements showed, that the rut depths of the adapted agricultural tractor were lower than those of skidder. Wheel slip is closely related to the size of the load, greater load results in increased wheel slip. The use of wheel chains reduces wheel slip but on the contrary causes greater damage to forest roads. Wheel slip was5% lower for both loads with skidder and the use of wheel chains in comparison to reduced tire pressure and non-use of wheel chains.
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