I have switched totally to my Bridge Hammock. My suspension is now configured as follows:
- Tree hugger, with SMC descending rings girth hitched to loops.
- Combined suspension lines and ridge line: 10' of 2.8 mm Spyderline, 3/4" ID Stainless Steel ring, 10' of 3/32" Yale Crystalyne vectran core line, 3/4" ID Stainless Steel ring, 10' 2.8 mm Spyderline.
On some of my combined suspension/ridge lines I have substituted the 3 mm AS-78 by Samson rated at 2,900 lbsf. Really nice stuff even if it is a brilliant white. Slightly heavier than the Spyderline at 0.0816 oz/foot. It is coated instead of sheathed and is easier to work with than the polyester sheathed Spyderline.
A 3/4" ID stainless steel ring is equal in weight to an SMC descending ring.
The Bridge Hammock is then suspended from the 3/4" ID Stainless Steel rings, giving me a 10' ridge line.
I use the Carabiner hitch described above. I like pulling my suspension moderately tight to tight and like the 3:1 mechanical advantage afforded by this method which makes the process easier. I can hang the combined suspension and ridge line. When I have that positioned, I then hang the hammock from the Stainless Steel rings. Simple, convenient, easy and and efficient.
I have reduced the weight carried in the hammock suspension from 8.376 oz to 4.80 oz, or 4.20 oz if I decide to use the ring version of the Carabiner Hitch. I have cut the weight of my suspension from the ring buckles almost in half and have done so with no sacrifice in ease or convenience of use.
Volume comparison ranked low to high: (volumes expressed cubic inches)
- 10' Harbor Freight suspension webbing: 4.72
- 10' Spyderline + 42" Harbor Freight tree hugger: 4.6 + 1.65 == 6.25
- 10' Spyderline + 42" Strapworks tree hugger: 4.6 + 3.31 == 7.9
- 10' Strapworks suspension webbing: 9.44
The Harbor Freight webbing suspension wins the volume comparison. The Strapworks webbing suspension occupies the most volume in the pack.
My dream tree huggers: Spyderline!!! If I could only use Spyderline or any modern small diameter, say 3 mm, dyneema rope as a tree hugger. Low weight and low volume.
Or if I could find 1" wide dyneema webbing with a thickness low enough to bring the weight down comparable to the 2.8 mm Spyderline. By my calculations, the thickness would be approximately 1.1 mm. Comparable to the Harbor Freight webbing in thickness. Seems like that should be acheivable with modern fibers. Then I would have low weight and strength in a tree hugger. Those who prefer the webbing suspension should appreciate that also.
- Spyderline suspension. With 10' of Spyderline and 100" end to end for the hammock and allowing 3' of line for a Carabiner Hitch on one end and wrapping the SMC ring and finishing with 2 slipped half hitches on the other end. That leaves 7' on both ends for spanning the distance from hammock to trees. That allows a maximum tree separation of a little over 22'. The minimum separation would be approximately 10' 6" deleting the Carabiner Hitch on one end. This assumes that the tree huggers are sufficient to handle the tree diameter. For an additional 1.56 oz., tree diameters up to 26" could be accommodated. Note that the tree diameter that can be accommodated is dependent only on the length of the available tree huggers and is independent of the length of the suspension rope.
- Webbing suspension. With 10' of webbing, a tree diameter of 1' will use slightly over 3', 3' 1.7" more exactly, of the suspension webbing to circumnavigate the tree. That leaves 7' for threading the buckle and whatever is needed to grasp and pull the suspension tight. Assuming 1' is needed to thread the buckle and provide enough to grasp, that leaves 6' of webbing on each end for spanning the distance to the trees. With distance from buckle to buckle of 10' 4", a maximum tree separation of a little over 22' could be accommodated. If the diameter of both trees was increased to the 26" that could be accommodated by doubled tree huggers, then 6.8' of the webbing would be used to circumnavigate the trees, leaving 3.2'. Again assuming the 1' for threading and grasping, we have 2.2' of available webbing. That means that the maximum tree separation in this case would be about 14.5'.
Thus, using suspension lengths of 10' for both the webbing and rope suspensions, approximately equal tree separations could be handled.
Hope this is useful to the members.