Skidding of fir roundwood by Timberjack 240C from selective forests of Gorski Kotar

Abstract

The aim of the research was to determine the productivity of the cable skidder Timberjack 240C equipped with double-drum winch Konrad Adler HY 16 during skidding of fir roundwood from the Croatian mountainous selective forests of fir and beech. The research took place in the area of Delnice Forest Management, at two workplaces with different degrees of stone obstacles provided with strip road network. Skidder productivity was determined by the method of time and work study. The paper shows the results of some working characteristics of the researched skidder, such as: travelling speed of unloaded and loaded skidder, time consumptions of felling site work (loading) and roadside landing work (unloading), allowance time, realized load volume, fuel consumption, dependence of possible productivity and costs per unit on timber skidding distance.