homemade whoopie sling

L

launchster

Hey, i'm still quite green when it comes to rigging, i was just looking at whoopie slings and prices on the internet, i thought i'd try and make a similar sort of strop that can be adjusted without having to tie and re-tie f8's, timber hitches etc.
This is what i came up with (just 8mm friction hitch while i was playing), it's just a figure 8 at one end and a blakes hitch tied to itself to make an adjustable loop. This loop can then be put through the f8 and is choked around the tree at the required circumfrence.
Pretty simple, you guys have probably tried sumat similar before with all your experience. Can anyone see any problems with it, maybe blakes slipping or something?
 

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I've always wondered why I never saw any spider legs tied with a blakes at the end or a simple setup like yours. I have a theory but haven't validated it yet.

My guess is that the blakes slips at a weight that wouldn't really support these types of uses. Every knot slips at certain weights and the blakes might slip at less weight compared to a 3 wrap prussik or a klemheist.

Anyone have any good reasons why you don't see this type of sling more often or spider legs in 1/2" tied with a blakes?

And it is VERY easy to splice 12 strand hollow braid.
 
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I've always wondered why I never saw any spider legs tied with a blakes at the end or a simple setup like yours. I have a theory but haven't validated it yet.

My guess is that the blakes slips at a weight that wouldn't really support these types of uses. Every knot slips at certain weights and the blakes might slip at less weight compared to a 3 wrap prussik or a klemheist.

Anyone have any good reasons why you don't see this type of sling more often or spider legs in 1/2" tied with a blakes?

And it is VERY easy to splice 12 strand hollow braid.

[/ QUOTE ] How are you proposing it to be used in a straight line or wraped around the pick like if you were hanging a block? Im just not sure how your tieing it. I have used whoopie set ups in different configurations so I can give some good insight.
 
Will it hold or not? This is something you can test. Most people are probably going to make one out of Tenex because those have been tested thousands of times and they are known to be reliable.

Your idea looks sound enough, and by adding another couple of wraps to your Blake's you could beef up the friction if you need more.
 
What he has made was a loopie not a whoopie. So you would just adjust your loop that chokes off the eye which is his bowline or endline knot.

Same thing but its a knot not a splice. Bulkier but no spliced involved.

Another side thought. Maybe the added knots reduce the rigging line to something not worth using.
 
We were removing a larger doug fir and lowering wood. We zipped what we could and used a porty for the rest. The problem was the climber was too impacient to listen to us and let us get a longer lowering line. We all know the line we were using was 20' too short.
The climber called for us to run what we could, and then dog it off. Take a second line and thread it parallel through the porty tied to the main lowering line with a blakes. It worked, sketchy having to do all of that. The blakes at least held 500lbs if not more.
 
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What he has made was a loopie not a whoopie...

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No, he has two eyes so it is a whoopie. But yeah, he has to worry about the weakening effect of the knots. As I said, some testing is in order.
 
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It's easy to make a first class loopie or whoopie with 5/8" Tenex. Directions are on Samson's site. You can get Tenex by the foot from Knot and Rope Supply.

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For sure! Learn the splice and use what has been proven. You will also save a good amount of cash doing your own slings.
 
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What he has made was a loopie not a whoopie...

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No, he has two eyes so it is a whoopie. But yeah, he has to worry about the weakening effect of the knots. As I said, some testing is in order.

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I always get those two backwards. My adhd doesn't allow me to remember that one fact.
 
ok so maybe test with differnt blake strengths. yeah that was the idea, for setting up a pulley etc on a vertical stem. The videos for splicing the whoopies out of the hollow braid look pretty simple, i'll give that a try as well. This might be a cool backup if ever needed. Thanks for the advice.
 
that would be a sketchy rigging situation. when you make that snug you're going to have a long throat sticking out. this is shock load heaven. don't do it. tying a cow is faster and easier than loopies and woopies anyway.
 
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that would be a sketchy rigging situation. when you make that snug you're going to have a long throat sticking out. this is shock load heaven. don't do it. tying a cow is faster and easier than loopies and woopies anyway.

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Agreed.
Looks like the rope being used is static line as well. Very sketchy!
 
taught line blake 3 wrap prusik i've seen all of them bind up and lock the tenex easy to adjust how easy is the blake to adjust after you load the heck out of it multiple times. I know knots lower the strength but for lots of times it will work just know your limit and play with in it.
 
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