Tensahedron Stand

[GadgetUK437]

Tried making the Tensahedron with two fewer poles!!

(Turtledog in background, looking on with disdain)

[Latherdome]

Tried making the Tensahedron with two fewer poles!!

That's fantastic Gadget! Now look what you've done! There went my morning.

Seems to me a single strong anchor on the pole side would suffice (boulder, base of a woody shrub?), securing both apexes, with the usual light tether on the foot end to keep upright. Lean the poles same as in the 4-pole variant so the hammock hangs clear, with zero risk of stand collapsing toward the pole side. Total 3 points on the ground as in the regular tensahedron case, only this way it's 2 tensile anchors and a compression point instead of 2 compression points and a tensile.

Screen Shot 2017-11-13 at 7.32.40 PM.png

Also the base mustn't be allowed to slip, though with the entire load on that one point it will tend to dig into soil well enough. If you had a spare pole laying about, you could brace it between the base and the strong ground anchor (a vehicle?) on harder surfaces. Possibly the anchor could be a single high point on said vehicle (lorry?), with the base braced against a tire, meaning no ground penetration required.

Minimum weight and bulk just dropped in half, or nearly. The poles need to be double strength for a given rating, and any extra ground anchoring will weigh something too.

[jellyfish]

Mind blown.
Next level.
I’m loving all this innovation.

[MAD777]

This is kind of like the unicycle of hammock stands!

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[Brady]

In a snowy field with a bunch of scouts: arrange like flower petals around a single central anchor like a screw or heavy cooler, water vessel etc. Arranged this way, assuming stout enough poles, each additional stand would take only 3 additional poles and 2 corner lashings, as they could share a common pole. Lashed 8' bamboo poles with packing tape/lashing to reinforce any splits: cheap and light, strong enough for lighter people.

13 poles weighing about 45lbs total, few dollars per pole, will get 4 people off the ground. There's some point at which the footprint and weight of the assembly will obviate the tethering requirement, even.



Might want to start setting up well before dusk though... What could possibly go wrong?

Wouldn't this require the use of identical hammocks or is each spoke an individual stand?

[Brady]

Is there a math calculation from the technical minded folks here that helps calculate the ideal pole lengths? With all the varying hammocks I own, I'm trying to figure out how to build one for the largest hammock in my fleet, my 14' Mayan and a separate stand for the 10, 10.5, and 11 footers that I can modify the attachment point to match each.

[knightshade]

There goes gadget thinking outside of the box....

[Latherdome]

Wouldn't this require the use of identical hammocks or is each spoke an individual stand?

Haven't made it in reality to know for sure. I think it can work with shared poles with hammocks of different lengths, but tuning the setup might be a bit more complicated.

[knightshade]

Is there a math calculation from the technical minded folks here that helps calculate the ideal pole lengths? With all the varying hammocks I own, I'm trying to figure out how to build one for the largest hammock in my fleet, my 14' Mayan and a separate stand for the 10, 10.5, and 11 footers that I can modify the attachment point to match each.

I did some random playing here:
http://ostermiller.org/calc/triangle.html

If you figure out your minimum suspension lenght, you have one side of the triangle.
I had some military masts that I was trying to use - so those determined two others...
Keep in mind that you are working in 3 dimensions - so the splay of the base also has impact on the angle of your hang.

Angle wise, I think that I'm fairly close to a 40/40/100 degrees with the triangle made between the suspension, and legs on either side.
If I'm doing my napkin math correctly, it puts my head hang angle at ~35 degrees, and my foot at ~45 degrees.
That will change of course based on where I put the pivot point in comparison to my anchor.

[knightshade]

Haven't made it in reality to know for sure. I think it can work with shared poles with hammocks of different lengths, but tuning the setup might be a bit more complicated.

Worst case, I would think that you could determine a common suspension length - and then tweak any shorter hammock to use a longer connector to match...
That said, as the head end is free floating, one would hope that it could/would find it's own balance point.