Epic transport solution for the track ropes of the 3S ropeway Grindelwald Grund - Eigerglacier

The longest and heaviest steel wire rope ever produced for a swiss ropeway, a breathtaking transport solution with 3 coupled trucks and a winning team - this is epic! One full locked coil track rope, 132 tonnes in weight, split on three trucks with a total length of 65 metres. This what we call an exklusive and world class transport on behalf of our clients.

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How long was the wire rope? Neat solution! I'm interested in the sequence of winding. I understand filling up the first spool, but then I can't figure out how to feed to the center and then wind the second spool without the first spool rotating as well - much less filling the third and fourth spools! Are they all on a single axis during the winding process, just shifting axially as each is filled? Again - cool job.