backup

What is a safe slackline backup? Use either static or dynamic rope, connected with knots to back up metal parts. Do not use ropes with diameter smaller than 9 mm. Webbing can only be used for lines shorter than 50m and well below 5kN base tension. BEWARE: forces can go above >20kN! In light of the recent fatal accident in Russia, many in the slackline community have questioned the reliability of their tiebacks and backups - especially for longer lines with high tensions. In order to shed some light on the situation, the ISA has performed 58 tests [...]