"Every day is a new day to a better future"
"Of all the things that matter, that really and truly matter, working more efficiently and getting more done is not among them." ~ Mike Dooley
"What if I told you that you couldn't have anymore of anything... No more friends, no more money, no more anything, until you first got happy with what you have?"~ Mike Dooley
"The only true wisdom is in knowing you know nothing." ~ Socrates
i agree, many methods allow for more stretch and getting a really low angle wouldn't be as possible for certain setups. that's why i tried the truckers, because i thought i could get it tighter than with traditional methods although i might be wrong, the trucker's is tied off with a knot which lets out slack as it tightens down, maybe cinch buckles would have been a better choice, but i think a longer span would make it alot harder to get a low angle simply due to the more inches of stretch you get from having more cordage in use.
i guess the only way to resolve this is to try again and see "how low can you go" i really thought somebody would go out in their yard and try to see what vacinity the lowest angle is with re-tightening, oh well. i'll definately try it at some point, but you need 2 people and the right trees so i don't know when i'll get a chance, but i just don't think really low angles are possible.
Last edited by warbonnetguy; 01-19-2009 at 12:53.
well, i see where you're coming from here. for a short span of time the angle is much less, but considering the extremely low weight/force it takes to "drop" the hammock to a much higher angle, i don't see how it would be more force than it is after the hammock is fully weighted. for instance when i pull the suspesnion horizontal, i can pull on the bottom of the hammock with my hand and get it to drop most of the way with very little force. you could probably go from zero to 15deg by throwing a good sized book in the hammock, yeah it's multiplied by a larger number at that angle, but the suspension only holds a tiny fraction of bodyweight at those low angles so it doesn't seem the overall force could be as high during the "drop phase" when your feet are still on the ground holding the majority of your bodyweight.
As I stated in the first part of the paragraph, I came up with those numbers by going through the geometry and force calculations:
"It isn't difficult to go through the geometry and force calculations to see how much stretch and drop you get for particular sag angles when you started from a near-zero sag angle (this assumes it is all stretch of the suspension line), I have done that before. For instance, for a HH ULB at a 12 foot span, all it takes is 0.8 inch stretch on each suspension line to get the hammock to drop 5.5 inches and you end up with a 14.5 degree suspension angle that represents 2x the users weight on each suspension line. At a 20 foot span, it takes a 2.4 inch stretch on each suspension line to get an 18 inch drop with that 14.4 degree suspension sag angle."
Youngblood AT2000
anybody know who has the best deal on cinch buckles?
Last edited by warbonnetguy; 01-19-2009 at 15:12.
dave, i just ordered a yates screamer. basically a shock absorbing webbing device where some of the stitches rip at a certain point to absorb shock. the one i got activates at 2kn with an accuracy of +/-5%, so it should activate roughly somewhere between 420# and 470#.
http://www.yatesgear.com/climbing/screamer/index.htm#1
Brandon, I'm not familiar with them but looked over the link to get an idea. It will be interesting to see how they work to measure the peak load on a hammock suspension. I didn't notice what they were made of but would guess it is nylon. In the hammock suspension line application you need something that doesn't stretch because that stretch will reduce the force you are trying to measure, I don't think that is the case for their intended application.
Youngblood AT2000
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