%0 Article %A Franz Holzleitner %I MDPI AG %D 2018 %G English %B Forests %@ 1999-4907 %T Monitoring Cable Tensile Forces of Winch-Assist Harvester and Forwarder Operations in Steep Terrain %U http://www.mdpi.com/1999-4907/9/2/53 %X The objective of this case study was to develop and test a specific survey protocol for monitoring tensile forces for winch-assisted harvesters and forwarders with a mounted or integrated constant-pull capstan winch technology. Based on the designed survey protocol, the interactions between work phases, machine inclination, and tensile forces in typical work conditions were analysed. The established workflow, including equipment and the developed analysis routines, worked appropriately and smoothly. The working load on the cable during the study did not exceed 50% of the maximum breaking strength. A maximum tensile force peak at 56 kN was observed during delays for the forwarder, and a peak of 75.5 kN was observed for the harvester, both of which are still within the safe working load when considering a safety factor of two.