Forums: Skydiving: Gear and Rigging:
Making Closing Loops

 


abyzet  (C 40095)

Sep 14, 2009, 7:14 PM
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Making Closing Loops Can't Post

Does anyone know of a website or have pictures demonstrating how to make main closing loops? I was shown once but would like a refresher...


phoenixlpr  (D 3049)

Sep 14, 2009, 8:19 PM
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Re: [abyzet] Making Closing Loops [In reply to] Can't Post

you need a finger traping tool....


ds8221  (D 29444)

Sep 14, 2009, 11:07 PM
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Re: [phoenixlpr] Making Closing Loops [In reply to] Can't Post

How To Make a Closing Loop


abyzet  (C 40095)

Sep 15, 2009, 7:33 AM
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Re: [phoenixlpr] Making Closing Loops [In reply to] Can't Post

Made one! Thanks! Wink


Ronaldo  (D 34728)

Sep 15, 2009, 6:51 PM
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Re: [abyzet] Making Closing Loops [In reply to] Can't Post

In case you want to try, I made a few closing loops with double ends. Youll need only a longer piece of line and the same fid or wire tool. Finger trap a loop on both sides and lock them in place using Jump Shacks sew less technique (see link). Make sure you respect the dimensions on the instructions.
Tie a knot at the same length you would do with a standard closing loop. You can actually tie 2 knots at the same distance from both ends. Install in the rig.
If the loop breaks, just flip the washer to the other side and you have a new loop right in hand and ready to be used (no need to run to your bag to look for another one).Tongue
I would post a picture but the rig is packed right now.
http://www.sidsrigging.com/...hless_fingertrap.htm


BrianM  (D 661)

Sep 15, 2009, 10:38 PM
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Re: [Ronaldo] Making Closing Loops [In reply to] Can't Post

In reply to:
If the loop breaks, just flip the washer to the other side and you have a new loop right in hand and ready to be usedTongue

Not trying to pick on you, Ronaldo - but if the loop breaks, you should have replaced it a while ago.


mjosparky  (D 5476)

Sep 16, 2009, 12:24 AM
Post #7 of 22 (1587 views)
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Re: [Ronaldo] Making Closing Loops [In reply to] Can't Post

In reply to:
If the loop breaks looks worn, just flip the washer to the other side and you have a new loop

There I fixed it for you.

Sparky


Ronaldo  (D 34728)

Sep 16, 2009, 2:12 AM
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Re: [BrianM] Making Closing Loops [In reply to] Can't Post

Absolutely right, thanks. Actually, I have never waited for a loop to break before replacing. When it looks too fuzzyits gone. I was too lazy to write the full sentence and ended up passing the wrong message. Frown
Another thing I should add is to take care when storing the excess loop. I usually tie one or two other knots to reduce length and insert it behind the grommet.


usskydiver  (D 12780)

Sep 16, 2009, 5:59 PM
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Re: [abyzet] Making Closing Loops [In reply to] Can't Post

1,000 lb microline works great and lasts a LONG time. You may need a double know at the end so it doesn't pull through the washer.

Tim


jdthomas  (D License)

Sep 18, 2009, 5:40 PM
Post #10 of 22 (1399 views)
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Re: [abyzet] Making Closing Loops [In reply to] Can't Post

 speaking of closing loops! Rig came into shop for repack/inspect. this is the main closing loop and washer.
Do not let your closing loops get to this condition.
Attachments: closing loop small.jpg (10.5 KB)


popsjumper  (D 999999999)

Sep 19, 2009, 2:47 AM
Post #11 of 22 (1363 views)
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Re: [jdthomas] Making Closing Loops [In reply to] Can't Post

LaughLaughUnsure
THERE's one for your Wall of Shame!


peek  (D 8884)

Sep 19, 2009, 6:00 AM
Post #12 of 22 (1340 views)
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Re: [usskydiver] Making Closing Loops [In reply to] Can't Post

In reply to:
1,000 lb microline works great and lasts a LONG time. You may need a double know at the end so it doesn't pull through the washer.

ds8221 pointed to "How To Make a Closing Loop". I suggest that everyone use this type of material or its equivalent. For example, Para Gear item W9680, with a number 8 flat washer.

A lot of skydivers (including many riggers) seem to think that since "microline" is so much better than older types of suspension line, that they are better for closing loops.

However, most of the newer types of line are slippery, and that make for a much less secure closing of your rig.

But you say you have seen this large microline on tandem rigs? If it is a coated cable then fine.

Also see: http://www.pcprg.com/flexcab.htm
The "Supporting Research:" paragraph.


AndyMan  (D 25698)

Sep 19, 2009, 9:51 AM
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Re: [peek] Making Closing Loops [In reply to] Can't Post

The loft at Skydive Chicago has been using 1000 pound Flat braided Dacron, and I'm amazed at how long it lasts. I've seen their closing loops last for more than a year, used by jumpers doing 300 jumps.

If I see 1000 pound flat dacron, I very rarely replace them during repacks, while if I see other materials I will replace on every repack.

The flat dacron stuff works amazingly. The word needs to get out.

_Am


masterrigger1  (D 14167)

Sep 19, 2009, 11:13 AM
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Re: [AndyMan] Making Closing Loops [In reply to] Can't Post

Quote:
The flat dacron stuff works amazingly. The word needs to get out.

Jump Shack has been using it for the last 18-20 years.
This is the only material that I will use. It does not need a washer, just the knot keeps it in place.

Good stuff!

Cheers,
MEL


jumpwally  (D License)

Sep 19, 2009, 6:53 PM
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Re: [masterrigger1] Making Closing Loops [In reply to] Can't Post

understood,,,,but would a flat washer hurt ? wouldn't it be extra safety...no ? just curious, thanx


masterrigger1  (D 14167)

Sep 20, 2009, 5:08 AM
Post #16 of 22 (1238 views)
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Re: [jumpwally] Making Closing Loops [In reply to] Can't Post

Quote:
understood,,,,but would a flat washer hurt ? wouldn't it be extra safety...no ? just curious, thanx

The size of the washer need to go over the larger material would be double what you normally use.

If you use the Jump Shack loops, you just use a knot.

Also, I never liked using washers anyway as they almost always have a sharp edge on them from the manufacturing/stamping process.

BS,
MEL


usskydiver  (D 12780)

Sep 20, 2009, 11:20 PM
Post #17 of 22 (1153 views)
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Re: [peek] Making Closing Loops [In reply to] Can't Post

OK, I guess I forgot to add that I use a POP for my deployment system....my container comes open when I open it....


kingbunky  (B 5376)

Sep 21, 2009, 6:23 AM
Post #18 of 22 (1120 views)
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Re: [AndyMan] Making Closing Loops [In reply to] Can't Post

In reply to:
If I see 1000 pound flat dacron, I very rarely replace them during repacks, while if I see other materials I will replace on every repack.

where can you find 1000 lb flat braided dacron? i don't see it at paragear (they list 400 and 600 flat braided, and round stuff in 600 800 900 and 1575). aerostore doesn't seem to have it either.


masterrigger1  (D 14167)

Sep 21, 2009, 8:53 AM
Post #19 of 22 (1100 views)
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Re: [kingbunky] Making Closing Loops [In reply to] Can't Post

Quote:
where can you find 1000 lb flat braided dacron?

Call Jump Shack. They will sell it to you.
You will have to "gut" it when you get it though.
You use just the outer sheathing...

BS,
MEL


kingbunky  (B 5376)

Sep 21, 2009, 9:30 AM
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Re: [masterrigger1] Making Closing Loops [In reply to] Can't Post

so, are they gutting the 1575 pound stuff to get 1000 pound flat? (W9759 in paragear)


masterrigger1  (D 14167)

Sep 21, 2009, 10:18 AM
Post #21 of 22 (1064 views)
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Re: [kingbunky] Making Closing Loops [In reply to] Can't Post

Not sure that it is the same stuff.
The stuff that Jump Shack uses is Type IV IIRC.

MEL


(This post was edited by masterrigger1 on Sep 21, 2009, 10:20 AM)


pchapman  (D 1014)

Sep 21, 2009, 12:41 PM
Post #22 of 22 (1036 views)
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Re: [abyzet] Making Closing Loops [In reply to] Can't Post

It is a little confusing just what Jump Shack uses.

In any case, heavier braided dacron closing loops can be really nice -- just from personal experience. The dacron isn't as slippery as spectra, it seems to wear better, the loop doesn't get as 'soft' as spectra does when it wears, and the loop has more strength than the usual type IIA sleeving (which is actually nylon).

I'm also not sure about the Jump Shack stuff. I've tried the type IV nylon sheathed line -- I think that's the type IV Jump Shack refers to. Ironically I don't even see it in their own on-line rigging supplies shop. That line is quoted as 750 lbs, but one pulls out the internal strands, with the strength of the sheathing being unclear. It's not in Poynters as best I can see. It is still a heavier closing loop than the usual type IIA sleeving.



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