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I want to put a zip line in my backyard for my kids. I'm looking for advice on what type to use, safety tips, and installation advice.

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Remember it's not just installation, but also maintenance. You need to know how to inspect and protect against wear, tear, and weather. –  Russell Steen Mar 14 '13 at 3:00

1 Answer 1

This is in the category with swimming pools, and trampolines, and jungle gyms. There is no way to be completely safe and still have it fun.

  1. Keep it close to the ground. This may mean getting a dozer in to shape the hill.

  2. Make for a soft landing. A foot of sawdust or sand. Fluff it up with a rototiller now and then.

  3. Double or triple pulley. Don't want a single axle failure to drop someone.

  4. A method to lock it so that it can't be used. (Mostly for liability reasons, but you may have kids that you don't want using it without supervision)

  5. Shock absorber at the downhill end.

  6. Extensive testing with various weights to see if the speeds are significantly different.

  7. A training bar with a clock. If it's a 10 second ride, you can't go on it until you can hang from the training bar for 20 seconds.

  8. Make the assumption that something happens and the slider stops. Is it safe to drop off there? If not, then back to the drawing board.

Most ziplines have raised ends, with one end lower. The uphill on the downhill end slows down the person. A lighter person tends to travel more slowly, and may stop short of landing point. This can be adjusted by shortening the cable, moving the low point closer to the landing point.

Conversesly a heavy person may come down too fast and slam into the stop at the end. Put more slack in the cable. You can also form a bumper by slitting a hollow core pool noodle, wrapping the bottom end of the cable with it, and then wrapping the noodle with fiber reenforced tape. This gives a 6 foot bumper. Again, test thoroughly. An old matress for 3 on the post at the bottom is also a good idea.

Perodically schedule an inspection: Check the slider axles for wear, the cable for wear, the cable splices at the ends, the attachments to the supports at the ends, the landing area.

Watch it in use, seeing of there are 'almost' accidents.

Liability: Probably a can of worms. If your kids want friends over to play, I would require that their parents take a ride on it.

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"There is no way to be completely safe and still have it fun." -- I call this the category of "life" –  Russell Steen Mar 27 '13 at 14:52

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