How to make a slackline “bouncy”, i.e. for tricklines

I have one of those basic 2” ratchet slackline setups you buy at REI. Doesn’t have enough stretch to try tricklining on it and I’m wondering what I could do to emulate those bouncy trick lines without buying a whole new rig. Was mulling over attaching an industrial spring between the line and my anchor point…but I’m not the sharpest crayon in the box and that could potentially be a maiming type of situation if I eff it up. Plus the only springs I can think of are the ones for your garage door and I don’t think those are meant to take this type of cyclic load under constant tension. Anyone try anything like this? Or any other solutions?

I have no experience but I’d imagine large sections of dynamic rope between your anchor points would do something. If your slack line is 50’ make your anchors 70’ apart and add 2 10’ cordelette’s of your stretchiest junk rope (22’ length tied together with tail) to either anchor point. 40’ of dynamic cord in the system should do something!

Maaaaaan the simplest solution is always the greatest one, Joe! I guess I’d have to experiment with the tensioning- the difference between static elongation of a climbing rope (~10%) and dynamic elongation (~30%) gives me a lot of play in between. Hoping a hard bounce doesn’t count as a UIAA fall though, that would give me a solid 10 bounces until complete failure of the system haha. But this is great, thanks a bunch!

Ally L wrote:

Maaaaaan the simplest solution is always the greatest one, Joe! I guess I’d have to experiment with the tensioning- the difference between static elongation of a climbing rope (~10%) and dynamic elongation (~30%) gives me a lot of play in between. Hoping a hard bounce doesn’t count as a UIAA fall though, that would give me a solid 10 bounces until complete failure of the system haha. But this is great, thanks a bunch!

I was thinking about that, a new rope is a lot stretchier then a well used one. They are dynamic not elastic, though they do have memory so I’m sure after a long afternoon they’d lose some bounce and your line will gain some sag. I doubt a rope would completely fail but anything is possible! Definitely something to try out 3’ off a nice soft landing first. 

I don't think there is a good way to add bounce.

I think you are probably better off buying different webbing, but that might be pretty involved to find a setup that works the way you want. IIRC 1" tubular is good for this. 1" Type 18 is about twice as thick as normal 1" tubular, so its difficult to use it with ratchets. My quick searching is that if you want trickline use, you might be better off buying a purpose made set.