Zipline cable for my 80lb daughter question

[Texas Pride]

Sounds like a bigger cable is the right idea. Thanks for all the input

[AntlerCollector]

Following. Good advice here. I’m wanting to build a zipline over one of my ponds this summer for the kids and adults to play on.

[Buck Shot]

Lots of websites for diy ziplines...I’d recommend you do some research

[MadHatter]

Not sure how much length you need but I have a ton of useless cable laying around.
I am a tower guy, so every time we string new guy cables, or replace existing guy cables I wind up with leftover hanks.
All galvanized steel.
3/16 - 1/2 inch.
If I could help let me know.
Probably have to work out an express though, as it's gets heavy quick.
3/8 is running about 44 cents a foot from my guy right now, so it might be easier to just buy it.

[Robert]

I built one over a small tank around 125 ft long and used 1/4 cable from lowes Kid was in middle school and weighed about 100lbs or so it worked fine. You need solid anchor points and a big turn buckle to get it tight.

[Alderrg]

https://www.amazon.com/Slackers-Hawk-Zipline-Spring-Brake/dp/B077YQF8MR/ref=sr_1_7?dchild=1&keywords=slackers+zipline+kit+for+backyard&qid=1610359513&sr=8-7

This is the one we put up as mentioned above

[Jackal]

Seen a kit at Tractor Supply several weeks ago.

[PYBUCK]

Don't compromise on safety. She will not always be 80 pounds, so buy 3/8 or 7/16 cable and be done with replacing it as she grows,

[tpcollins]

340# would be the static load. I believe climbing ropes are tested at 10% of the static load dropped from either 6’ or 8’ (can’t remember) several times.

So I'd take a couple cinder blocks that add up to 34#, have the cable tied to a tree limb with the blocks hovering just above the ground.

Then lift them up to the top of a 6’ step ladder, push them off and see what happens. I’d wear some safety glasses just in case.