I have no training, but I love backyard engineering. I’ve posted before about the pond I built.

But my pride and joy is the zipline I built over my pool. Some have a slide or diving board, but I think I have the only pool zipline.

The posts are steel vineyard anchors bolted back to back.

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One end is sunk in concrete in the dirt with rebar for stability, and a guy wire attached to a Japanese maple.

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The other end is buried in the concrete of the pool deck and it is bowing because there is nowhere to anchor any counter tension. But it ain’t going anywhere.

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Tension on the cable is from a boat cable winch rated at 1600 lbs. The bolts that hold it are rated at 1000 lbs, and the cable is stainless steel aircraft cable. I don’t think it’s going to break.

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The carriage was purchased on line from a backyard zipline company. Disclaimer: this is not the intended use of their product. The manual showed it run on a slack cable between two trees or something. I threw that horseshit right in the garbage and got to work on my pool.

It has a stop in the line so it stops over the deepest part of the pool. It is cobbled together from parts I had around with a Nerf basketball to cushion the stop.

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It is a popular attraction for kids and grown ups. What do you think of my design? I am open to comments and criticism, especially from those who actually know something about this sort of thing.

As a bonus to Zoidberg, this is similar to my first car when I was 16. There are some pictures of the real deal (and frighteningly 16-18 year old me) in storage that I will share eventually. Have to find them. This will do for now.