http://www.blackdiamondequipment.com/en ... pel-slings
Συμπεράσματα:
Αναρωτιέμαι πόσοι όντως χρησιμοποιούν 2 ιμάντες για αυτασφάλεια στα ρελέ. Και κατά πόσο έχει νόημα στο ραπέλ από τη στιγμή που έχεις από κάτω την κοτσίδα.The bottom line is that we couldn't get a belay device in a realistic scenario to a temperature where it would melt a sling. JT is more at risk of burning his hands than melting through the single 10mm sling that he's anchored to while rapping a multi-pitch route.
However, a few things you can do to reduce your stress level:
* Rappel slower—this keeps the temperature of the belay device lower
* Rappel with lower loads—this also keeps the temperature of the belay device lower
* Use nylon slings to anchor in with—they have a higher melting temperature
* Always anchor in with two slings—this is just good practice
* If unsure, the spit test can give you an idea of approximate temperature