I have built zip lines since I was a kid. The last one I built, with my kids, has two cables, slanted in opposite directions, parallel to eachother. The two pulleys are connected by a light rope, so that you always tow your return ride along with you. Much nicer than having to walk back to the beginning.
I don't have a good system for returning it to the other side without riding it though, so it makes it complicated if you have multiple people trying to get to the same side.
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I have built zip lines since I was a kid. The last one I built, with my kids, has two cables, slanted in opposite directions, parallel to eachother. The two pulleys are connected by a light rope, so that you always tow your return ride along with you. Much nicer than having to walk back to the beginning.
I don't have a good system for returning it to the other side without riding it though, so it makes it complicated if you have multiple people trying to get to the same side.
Good Luck!
jmschristiansen@hotmail.com