The grands love swinging so when I asked what playground equipment to build first their answer was a resounding SWINGSET!
so I made a swingset for adults. That will probably last them well into adulthood. All pressure treated lumber and fittings rated to yank a engine out. (Just in case ya know?)
I may need a bit more length on the chain but I have satisfied customers. Maybe a climbing wall on one side…
Rather than longer chains, you might want to bury the legs a couple of feet. It’s even more important with longer chains. If the chains are long enough to get past where the legs are on the ground, there’s a tip over hazard.
My sister and her ex-husband made and installed playground equipment for many years and they learned the hard way that even a well designed and built swingset can tip over in use, and/or be displaced by Kansas storm winds.
Maybe I should leave it as is. That is a childhood memory of mine too. It does give the wife something to watch for. Keep a close eye on dem kids so they aren’t doing that. which means she ain’t looking for me … XD