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(May 2013) My first (and only) ISIS Elevator. I'm glad I found one before they all disappear...
ISIS Elevators are driven by Kevlar cables, as opposed to steel cables. While Kevlar is stronger (can hold more weight), it is less resistant to friction- it is not uncommon to find frayed cables on these elevators, and there have even been a few cases where some or all of the cables have completely snapped- sending the elevator into freefall.