Splicing Loopies

[John Paul Sanborn]

I do the coathanger too. I bend it onto an odd carabiner.

5/8 is a 28 inch bury for tenex.

2 fid lengths, a fid is 22*d

22*(5/8)=13.75*2=27.5


1/2 inch is a 22 inch bury

 

[TreeJunkie]

Jps do you use this formula for eye slings also?

 

[John Paul Sanborn]

I do a brummel on Eye slings.

I have an I&I I use for my big saws, just girthitch it to the handle and place a carabiner onder it

 

[TreeJunkie]

what is everyones preferance for rigging up in the tree, loopie or eye sling?
Why does the fact that you are girth hitching a loopie not degrade the strength as much as say w/ webbing or reg rope? I've heard girth hitching can reduce strength up to 50%: why does this not apply to loopies?

 

[Lumberjack]

I perfer a loopie.

A girth hitch that is over only one strand of the tail puts more load on it, thereby reducing strength. Sherrill's (and many others now) make the eye longer so the girth hitch rests on 2 peices of rope.

On a loopie the girth hitch passes over 2 peices, so there is some degradation in the strenght, but not as bad as an eye sling that ony goes over 1 peice of rope.

 

[dbeck]

my understanding is an eye sling is one rope (obv.) while the loopie is two ropes because it is a continuous loop and doubles back on itself when girthed. When there are two lines in use, you have twice the strength. Remember to reduce ratings according to splice/knot on all lines!

 

[TreeJunkie]

nick, How many feet do you recommend to start out w/ for making an average sized 5/8 loopie. I need to know how many feet to order.

 

[John Paul Sanborn]

Figure out the Dia. of the wood you'll be working on most.

then find C from D.

Double that figure for the length of rope.

Then add several inches for the tail, terminal backsplices and waste.

Add a couple more inches for the reduction of lenght with the burry.

 

[Lumberjack]

I stayed up last night making loopies.

I only made 2 cause I got rather sleepy as I didnt start till 12. But I made one that is made with 3/8 for life support use. And another out off 1/2 for general rigging.

Tonight I will make some more. What I figure is that you can make them as big as you want, but if you cinch them down you get a tail that becomes very long and impractical to deal with. I plan on making mostly 10'ers (so it will fit up to 3'), but also a couple smaller and maybe one or 2 bigger. Just think of the average sized wood you deal with and go from there.

I think I am with JPS, I use the weight of the block to help me sling it around the spar. I take the rope out of the block and tie it off to my saddle, swing it around, adjust, tie piece and cut.

I plan on keeping 1-2 3/8 whoopies in my ditty bag along with the Art RG and my other junk. That way my redirects can be very easily made, with a minimal amount of friction, or a second tie in without a problem.


Climbing frictionless is so much easier.

 

[John Paul Sanborn]

Originally posted by Lumberjack

I think I am with JPS, I use the weight of the block to help me sling it around the spar. I take the rope out of the block and tie it off to my saddle, swing it around, adjust, tie piece and cut.

And if you keep the burry, or pass through portion in the hand swinging it around, it's all ready to set upwhen the block comes around. Less fiddling with it.

I don't know abouy using a loopie for TIP anchor, there are enough good FC designs out there that this seems like going backwards.

 

[TreeJunkie]

Originally posted by John Paul Sanborn
Figure out the Dia. of the wood you'll be working on most.

then find C from D.

Double that figure for the length of rope.

Then add several inches for the tail, terminal backsplices and waste.

Add a couple more inches for the reduction of lenght with the burry.

What do you mean find c from d, You make it sound as if you have written directions. I didn't know there were any.
What i want to make is probobally on for wood up to say up to 15'' diam, and one larger for up to 36". What length of tenex would you start w/ to aquire these two sizes?

 

[John Paul Sanborn]

Take the diameter of the wood and multiply by Pi to get the Circumferance.

Your rope should be more than 2 times the Circ. of the wood you normally work with to account for waise shrinkage and the ends that are outside of the loop.

The previous post is my method of guestimating the lenght of rope needed.

 

[TreeJunkie]

Excellent thanks JP, that's what i needed to hear. I just ordered about 100 worth of tenex from SEAMAR. Got some in all diam. between 3/8 and 3/4. Hope i see it soon.