It worked but could never really get very horizontal in it. Packaged as a set of two, they are 3 in. I think I figured it out. On weekdays you can find him working from coffee shops around the world and exploring unchartered territories with a hammock on the weekends. The Hammock Hang Calculator lets you calculate how high to set your anchors based on the size of your hammock and distance between points. thx. Sorry, just after I wrote you, I realized that you are considering the angle alpha when the hammock is loaded, I was considering it when it’s empty (there’s quite a difference!) Trying to find one to fit. I’d be really cool if this were slightly more adjustable… specifically, if the “hang point” height could be fixed to allow for an adjustment in the “distance between anchors”. This buffer gives a safe margin of error. Here are the numbers I am using I would hammer the pipe in a few inches, then put the 1-1/2″ pipe in to get the dirt from inside the pipe out. This is a great option for disbursing the weight across multiple studs. I checked with the developer and apparently the app needs to be compatible with the Kindle in order to be listed on the Amazon App Store. Even the “reset” values give me a NaN ft value. I’ve bought the app and have a suggestion for the user interface – can you make the number boxes active so we can tap on them and change the number? and include two heavy duty zinc plated S-hooks. Derek, Most 10×5 foot hammocks, common in camping, work with a 30° hang angle typically. Since you can enter both a ridgeline and a hammock length, does the app account for the hammock sag when calculating Hang Point? Available as an app for $0.99 or online for free, the calculator explains terms like the ridgeline, shear force, and suspension length in one easy-to-understand diagram. Unique Hammock Company Stories . If it is really steep, you’ll get crazy numbers that probably aren’t realistic. You’ll have to experiment, but in my experience you will need to lower the hang point about 12 inches for spreader bar hammocks than what the calculator lists. I’ll ping the developer again and see what the timeline will be for this. I wouldn't hang it from the tent trailer uprights as that'll just end of damaging them. The Hammock Universe Hang Calculator There’s no better feeling than kicking back and relaxing in your hammock on a hot summer day. I wasnt complaining, just trying to figure out a solution. . A stud finder is the best way to determine the location of a stud. It gets tricky, though, because if the three commercially available bridge hammocks, they have different requirements. I guess this would be more complicated, but also more accurate…. I just want to make sure I don’t exceed that. On weekdays you can find him working from coffee shops around the world and exploring unchartered territories with a hammock on the weekends. Downunderhanger. I searched the spam folder too with no success. You can change it in, Check out 89 similar everyday life calculators, As trees are the most popular place to hang a hammock from, take some time to find the perfect spot. Australia. I guess it isn’t two times the shear force, but rather just once. and I got as the measurement for suspension length a NEGATIVE 18.4 inches! Try restarting the phone. When you decrease the degree of the hang, you increase the horizontal force. The reality is that I don’t have the funds to maintain the app version. I’m using the calculator in metric units, if there’s any difference. This tool is best used as a way to figure out approximately how high to attach your hammock. Authentic Mayan hammocks sold from Hammock Rada for example are amazing. In addition to calculating hanging information, this tool lets you know the physics of a hang: how much tension and force are being applied to the anchor points, suspension lines, and hammock. In your example, if you need a shorter hang height but still have a wide hang distance, you will need to use a smaller hang angle. Otherwise neat and easy to understand calculator. Suspension Dutch Whoopie Hook. Yes. Are you using a ridgeline? Thankyou however to all of you for the analytical & entertaining ramblings and Derek for a fabulous idea…the hammock calculator. Hammock Length: 112 (end to end of nylon. As to this web calculator, it has to make some accommodation whether you input the ridgeline length or not. It’s a great starting point if you’re are going to set permanent anchors in your living room, for example, or for estimating a hang point when camping. It’s off the market for performance issues. So in this case, where the short vertical leg is Fv = half the weight, then the hypotenuse, T, is twice that, the full weight. Derek, great calculator. I’m using Lash-it for the ridgeline, and that’s listed with a 500lb strength. comments. The Hammock Hang Calculator will show you how high to set your suspension points (rope, straps, eyebolt, etc.) 2019 and can’t find the android version in Google Play. SilvrSurfr. Interesting. Is that correct? Tarp HG Winter Palace. If the angle were different, the horizontal force would change, but the downward force would stay the same. I bought the app for using on my iPhone 5S/iOS7.1.2. Anyway thanks if I understand it right, the only thing that would change is that I might have a non-negative suspension length with a shorter hammock. You’re missing this last part. Google+ Comments. ), would be one way to check. Thanks for your answer, Derek. I don’t want a bunch of holes in the walls trying to find the best place to span wall studs. Thanks Van. In the meantime, contact the App Store to get a refund. One of my favorite stands is the byer vario stand because it is adjustable and gives you more hanging options. Just bought the app. Now that I have retired and am at the older years, I have been considering how to put a hammock on my back patio. And finally it tells us that the sum of moments about the center of mass of the hammock and its inhabitant(s) have to add up to zero, otherwise the hammock and its inhabitant(s) will start spinning. There are just too many variants to keep track of. *sigh* Yes. Yes, the calculator looks at straight lines. Just bought the app for my android phone (Samsung Galaxy Note 4 I haven’t had a reason to do physics for about 20 years… lol. I don’t use a ridgeline, so I was wondering if hammock length was just the length of the resting area, or if it’s the total hammock length. The numbers check out. “. Shear Force [Is my post strong enough to withstand this force?] For instance, if you've chosen the preferred sit height and additionally you know hammock and suspension length, you'll be able to calculate the distance between anchors, as well as a hanging point. by Classic Accessories (1) $ 101 71. to be safety rated above 300 lbs. If you put the anchor point at the highest point you reference, you could then hang your hammock at a higher angle (45) using the loop extender, or at a lower angle (30) by clipping directly to the anchor bolts. been having trouble figureing out my ridgelne length but this gave me a good place to start tyvm. Is get the Vario stand. What else? […] if you never took high school physics. I can’t make this thing work. There’s even an app for calculating the most comfortable setup for your […]. I just got a hammock and i don’t know a thing about them. It’s the load on each side. […] You can calculate the correct height to place the hammock by using a hammock hang calculator. If you want to buy only one strut or make your own, just borrow the dimensions of the stand. Lorenzo. Kjøp en hengekøy – kanskje får du din beste natts søvn […]. Is it ok to do it this way or should I put in a new hook higher for the foot of the hammock? It was too difficult to keep working across the different versions of Android. I think with a sit height of about 20″ or so, this should work between the columns, but want an expert opinion BEFORE I order. Am I correct in my thinking? well derek, i guess my question is i’m not sure why i’m not getting the ultimate hang…but maybe it’s cause i’m being careless… The calculator helps with a starting point, but you can modify from there for sure. Thanks! For the right angle, the strap lengths are way off. The hammock I really want is the large, but it is 13.4′ and I am just leery of it fitting in that space without the hang angle looking stupid. Now you want an angle alpha, this means that the derivative must be equal to tan(alpha), so x/L=tan(alpha)/2. But while you’re getting started, you can also check out this awesome Hammock Hang Calculator. I’m looking at doing just a web version. I just need some time. If you try to, it will curve up into a bend. Thanksa. Still have the rooted Nexus 4 running 4.4 and still experiencing the same errors.. Just checking to see if there has been any additional headway? Also, although it is easy enough to bring out the calculator to get 83% of physical hammock length for a ridge line length, it would be nice to be able to specify physical length with a check box to use 83% – or just list on the page, 83% of 8ft, 9ft, 10ft, 11ft, 12ft for reference. How to hang a hammock so it won't fall down. Shorter and narrower hammocks benefit from shallower sags, or in other words, a tighter pitch (about 20° or so). The studs I picked are on key frames so there are multiple studs together. The rest is a matter of equilibrium of forces and moments. Am I missing something in the app ? Nice site by the way. I do need to update the calculator for bridge style hammocks that have spreader bars. Ropes and webbing aren’t very good in transferring bending moments. Hi! Start with those and then adjust. In my testing, I’ve found that longer, wider hammocks benefit from a deeper sag (about 45° or so) thus giving you a more dramatic diagonal. Hammock length (isn’t “ridgeline” a dependent variable?) I rarely take a stool backpacking. | Hammock Centre, Relax 101 - Perfecting the Art of Hammocking - Nikki Fogden-Moore, https://www.amazon.com/gp/product/B00O80MROA/ref=crt_ewc_title_srh_1?ie=UTF8&smid=A2RQVBHNLKPEYG&th=1. T = sqrt(W^2/4 + W^2/(4 * (3 / 9))) = Sqrt(W^2/4 + 9W^2/12) = Sqrt(3W^2/12 + 9W^2/12) = Sqrt (12W^2/12) = sqrt(W^2) = W !!! This centrifugal action applies more force than just the weight of the stone. A common value is 83% of the hammock length. The first is the length of your hammock itself. When your pull force exceeds the wall’s force (e.g., its rated strength), you can pull the wall down. A stud finder is the best way to determine the location of a stud. RE: Reader asking about hanging from steel studs…highly NOT recommended. My straps have loops in 4″ increments, so I got as close to 67 as I could. If you remember common right triangles, you’d know that for a 30º triangle, the hypotenuse is twice the length of the short leg. This is also why folks recommend a safe working load limit by reducing the breaking strength by a factor of 5 or more to account for the unpredictable dynamic forces at play. Bob. Consult with a builder to determine what you have and what kind of lateral stress they can manage. A search in the Amazon app store did not find the app. Android issues are spotty and I can’t confirm with certainty which combination is having issues. I can adjust the sit height by lowering the hanging point. I am new to hammocks so been playing with the app a lot, plus I am 70 and hope a hammock will help us get back to camping this year. Wow, Derek is really on the job here! Since the vario bars only seem to only extend to about 56-57in, and I’m at max height now, is my only solution to maintain the proper sag if it stretches more (and I start to hit the cross bar) to widen the distance or would doing something to shorten the end ropes be a better solution. Yeah, those numbers aren’t adding up. Dan, you’re right, I forgot to take that notice off my site. I assume it is fixed, but without the HH here yet I don’t know. The only way you can add more overall force is if there is a ridgeline between the two hang points and this is pulled tight BEFORE adding the occupant weight. is the cord tension through the calculator the same as the load for each strap, or is the load distributed across each strap? At the “magic” angle of 30 degrees the forces are equalized so you will see 100 lbs on EACH SIDE of the hammock suspension if there was 100 lbs in the hammock. Don’t give up! If its not satisfactory youd best join the hammock community..hammockforums.com and like the rest of us begin the wild wonderful journey into the many and varied ways of hanging. There are many different articles and blog posts on the Internet, but we'll sum up here three essential features: Writing this short article, we used a few helpful websites, check them out! Turn to tech and try a Hammock Hang Calculator app (yup, there's an app for that). I’m looking for a new coding partner. 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