Page 1 of 2 12 LastLast
Results 1 to 10 of 15
  1. #1
    New Member
    Join Date
    Dec 2009
    Location
    Northern Virginia
    Posts
    18

    Breaking Strength Required for Structural Ridgeline?

    What is the breaking strength required for a structural ridgeline on a hammock? Is the whole weight of the person put onto the ridgeline, or does it take less load? I weigh about 165.

  2. #2
    Senior Member Just Jeff's Avatar
    Join Date
    Oct 2006
    Location
    Charlottesville, VA
    Hammock
    Blackbird
    Tarp
    MacCat Standard
    Insulation
    Winter Yeti, MWUQ4
    Suspension
    Whoopie Slings
    Posts
    8,012
    Images
    32
    It depends on the angle of the supports, but a ridgeline can be less strong than hammock supports. I'd be careful going below about 300 lbs, though...just a guess. I'm sure one of the matheletes will chime in with a formula and .xls spreadsheet soon!
    “Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story

    - My site: http://www.tothewoods.net/
    - Designer, Jeff's Gear Hammock / Pack Cover by JRB

    IMPOSSIBLE JUST TAKES LONGER

  3. #3
    Bubba's Avatar
    Join Date
    May 2010
    Location
    Ontario, Canada
    Hammock
    WBBB 1.7 SL
    Tarp
    WB Superfly
    Insulation
    WB and UGQ
    Suspension
    Whoopies or Straps
    Posts
    5,350
    Images
    57
    Here's what Grizz said in another thread:

    Quote Originally Posted by GrizzlyAdams View Post
    ...

    Thumbnail sketch...if your hammock is hanging from the ridgeline at 30 degrees, and the suspension line approaches the tree from the ridgeline at 20 degrees, then the total force on the ridgeline is half the body weight. Crank the tension up to make the angle on the suspension line to tree 15 degrees, and the force on the ridgeline is the body weight. Even tighter (if possible, e.g. using a trucker's hitch or something equally insane) to 10 degrees and it is twice the body weight. You get the picture...

  4. #4
    Senior Member thekalimist's Avatar
    Join Date
    Feb 2010
    Location
    atlanta, ga
    Hammock
    BMBH, GT single para
    Tarp
    WB mamajamba
    Insulation
    walmart 40f bag UQ
    Suspension
    whoopie>togg>strap
    Posts
    351
    Images
    75
    not sure, but when I (220lbs) get into my hammock there is a far amount of tension on the RL. Im using 7/64 amsteel, but thats WAYYYYY overkill. I also use my RL to adjust/get out of hammock so i prefer strength

  5. #5
    Mr. Arrowhead pgibson's Avatar
    Join Date
    Apr 2009
    Location
    SW Idaho
    Hammock
    Black Bird 1.1 Dbl
    Tarp
    AHE Shangi La
    Insulation
    KAQ Prototype
    Suspension
    AHE Whoopie Slings
    Posts
    4,539
    I have heard of a few folks have 300 pound rated cord snap, I would not go under that and for hammock ridge lines we make I use 1000 pound rated dynaglide.
    Arrowhead Equipment -- For all your hanging, backpacking and Ultralight Fishing gear needs.

    Free APEX Upgrade on Every Kick *** Quilt (KAQ)

    Now Offering FlameThower Down Gear And Tenkara Fishing gear
    Arrowhead-Equipment.com
    Tenkara-Fishing.com
    Visit AHE on Facebook Follow us on Twitter
    Sign Up for Arrowhead-Equipment Gear News: Click Here

  6. #6
    New Member
    Join Date
    Jun 2010
    Location
    Byram, NJ
    Hammock
    Eno Double Nest
    Tarp
    Kelty 9
    Posts
    19
    So, the structural ridgeline actually supports the person in the hammock. Sorry about my ignorance. In a real simple way, can someone explain the exact funtion on a structural ridgeline?

  7. #7
    Senior Member angrysparrow's Avatar
    Join Date
    Apr 2007
    Location
    near Memphis, TN
    Hammock
    WB Traveler
    Tarp
    ZPacks CF
    Insulation
    Te-Wa / HG / WB
    Suspension
    Whoopie Hooks
    Posts
    9,686
    Images
    92
    A structural ridgeline creates a minimum amount of sag (the U shape) of a hammock. That lets you lay on the diagonal easier, because the material is looser.

    If you have a hammock without a ridgeline, the tighter it is pulled the more 'inline' you have to lay in the hammock due to the tension, and if it's tight enough the sides will squeeze your shoulders.

    Read the ridgeline section of this page, for visuals.
    “I think that when the lies are all told and forgot the truth will be there yet. It dont move about from place to place and it dont change from time to time. You cant corrupt it any more than you can salt salt.” - Cormac McCarthy

  8. #8
    New Member
    Join Date
    Jun 2010
    Location
    Byram, NJ
    Hammock
    Eno Double Nest
    Tarp
    Kelty 9
    Posts
    19
    Thank you so much. That article was very informative. I have an ENO Double Nest, can I attach the ridgeline to the stock carabiners?

  9. #9
    Rain Man's Avatar
    Join Date
    Nov 2007
    Location
    Nashville, TN
    Hammock
    Modified HH Ultralite
    Tarp
    OES MacCat Deluxe
    Insulation
    DIY UQ & UGQ TQ
    Suspension
    whoopie slings
    Posts
    2,102
    Images
    7

    Question

    Quote Originally Posted by angrysparrow View Post
    A structural ridgeline creates a minimum amount of sag (the U shape) of a hammock. That lets you lay on the diagonal easier, because the material is looser.

    Hmmmmmm ... you are making me think differently! I always thought a structural ridgeline created a maximum amount of sag. Back to the drawing board.

    Since I recently bought my wife a double ENO, this has taken on more interest for me, than in the past when all I had was a HH.

    Rain Man

    .
    "You can stand tall without standing on someone. You can be a victor without having victims." --Harriet Woods
    .

  10. #10
    Mr. Arrowhead pgibson's Avatar
    Join Date
    Apr 2009
    Location
    SW Idaho
    Hammock
    Black Bird 1.1 Dbl
    Tarp
    AHE Shangi La
    Insulation
    KAQ Prototype
    Suspension
    AHE Whoopie Slings
    Posts
    4,539
    Quote Originally Posted by Jimmyo66 View Post
    Thank you so much. That article was very informative. I have an ENO Double Nest, can I attach the ridgeline to the stock carabiners?
    Yes you can, depending on how the ridge line is made or set up to function. But most would be very easy to clip into the carabiners, including adjustable ones.



    Quote Originally Posted by Rain Man View Post
    Hmmmmmm ... you are making me think differently! I always thought a structural ridgeline created a maximum amount of sag. Back to the drawing board.
    .
    You can always increase the amount of sag in the hammock causing the ridge to be loose but a tight ridge line is generating a set minimum, by hanging the straps even higher or trees closer a loose ridge line becomes non-functional and will let you go more and more sag all the way to the hammock ends touching (the max sag possible)
    Arrowhead Equipment -- For all your hanging, backpacking and Ultralight Fishing gear needs.

    Free APEX Upgrade on Every Kick *** Quilt (KAQ)

    Now Offering FlameThower Down Gear And Tenkara Fishing gear
    Arrowhead-Equipment.com
    Tenkara-Fishing.com
    Visit AHE on Facebook Follow us on Twitter
    Sign Up for Arrowhead-Equipment Gear News: Click Here

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •