Farmer's Loop/Wireman's Loop For Mechanical Advantage

[@lanceb.2675]

Hey WhyKnot. This is a beautiful loop. I’ve spent the last month watching alpine butterflies and have come to the conclusion this one is top shelf. Thanks.

[@dragan3290]

I loved the alpine butterfly! But now I love this farmers loop more. Awesome 👌

[@waywatcher9779]

I just took up knots yesterday and Alpine Butterfly was the first I learned and I liked it. The farmers loop though is glorious though.

[@Jedi_Jed]

I hoisted a washer machine up onto my porch using two alpine butterflies with carabiners for mechanical advantage. I almost couldn’t untie the butterflies. Haven’t tried the farmers loop but it looks a lot like a bowline or zeppelin the way it would release.

[@davidlomm4424]

This knot is SOOO easy :) Middle to the left, middle to the right, middle to the left again then pull the middle on through :) LOVE IT,... Now I can get Timmy out of the Well ;)

[@clarksvilleclimbing6217]

At first I was thinking its to much, why not just tie the truckers knot. The end tells why. FANTASTIC!

[@lordgiblets7585]

I like how it starts very similarly to the alpine butterfly loop.

[@chrisgilligan745]

Wow, thanks for the additional information regarding quick release option with carabiners.

[@NoferTrunions]

TOTALLY AWESOME TIP to untie after extreme loading. I need to pull a tree over and have to make a series of these knots to use with 2 come-alongs.

[@glock-hm3ro]

Just brilliant, mate. Thanks from the USA

[@HeyNylo]

Have a look at the in-line figure eight for the initial loop in a trucker's hitch. Very fast and relatively easy to untie.

[@tomcanfield705]

So good description of the knot. BUT the mechanical advantage is a theoretical 2 to one. It is not determined by the number of strands but by the number of points the cordage passes over.

[@RMNPBETA]

I was looking for something to use with the voodoo system and this seems perfect!

[@Rick-the-Swift]

This. Good stuff my friend!

[@imnotabadperson]

Awesome explanation and demo

[@ryanbeard1119]

Do they make a ring that's held by a marlin spike so someone could do compound truckie hitch without wearing the rope or cord.

[@JLaddy]

Bowline On a Bight would also work and is easy to untie

[@danhle1032]

the extra tips at the end are why ur videos are awesome!

[@jeffvanburen1167]

Can you show the whole system in working position I’m missing which line ties off and which line goes to thing being lifted

[@Jedi_Jed]

The way this releases reminds me of a Zeppelin Knot. Do you prefer this over a slip knot like is used for a truckers hitch? Does it release better?

[@MichaelR58]

Good instructional video , thanks for sharing , God bless !

[@johnnysparkleface3096]

At 24 seconds in, you point out that you have a 3 to 1 mechanical advantage. It would help if you showed it in action, I can't envision how it'd function. But the instructions for making the knot are good.

[@LordOfThePancakes]

Just tie the knot and you’ll be able to see it in action on whatever you use it for. Ratios aren’t definitive numbers, they are probabilities. It’s like if the Chargers have a 3:1 odds chance of beating the Seahawks, can you “see” the 3:1 ratio? You could make the argument that yes you could see it if you were to watch the game… but even then it’s not a defined term, it’s just a probability. The outcome would be the result of the ratio, not the ratio itself. Same thing applies with the know here. You’re asking for a demonstration, but him tying the knot was the demonstration…. The knot does in fact have a 3:1 mechanical advantage. This is due to load weight capacity and tension physics. Hooke’s law states that the strain of the material is proportional to the applied stress within the elastic limit of that material. Mathematically, Hooke’s law is expressed as: F = -kx In the equation, F is the force, x is the extension in length, k is the constant of proportionality known as the spring constant in N/m. Since the rope in the video is elastic, it’s important to keep in mind that elastic Potential Energy is the potential energy stored in an elastic material when it is stretched or compressed. The amount of energy stored is proportional to the amount stretched or compressed, as in, the more the amount of stretch, the greater is the energy stored. Based on Hooke’s Law, we already know that for elastic materials, the force applied by the spring is proportional to its displacement, given by the following relation. x=kF; where F is applied load x is the displacement (stretch or compression) k is the spring constant At the equilibrium position of such a system (where the force applied is 0), the potential energy possessed by the system is zero. To calculate the potential energy stored in the spring when it is displaced by a certain amount, the following formula can be used. U=1/2 kx^2; where U is the elastic potential energy of the system. Does that make sense the way I explained it? I’ve tried to keep it simple so hopefully it’s a little easier to follow & understand.

[@MikeOrazzi]

Nice description.

[@tomb7901]

Great, simple knot. Can tie it with your eyes closed.

[@davyboy1379]

Is this knot better than the artillery hitch for undoing after heavy loading. Could you do your tying method of the artillery hitch? Thanks. David.

[@WhyKnot]

If you noticed near the end of the video I had two carabiners in the knot to help pull the knot apart. With the carabiners attached it is really easy. If you do not have the carabiners, for heavy loading probably the alpine butterfly loop is easiest to untie. The artillery hitch is usually better for light to moderate loads. Yes I can do a video on the artillery hitch. I will put it on the list. Cheers.

[@johnnorton2182]

WhyKnot t

[@kylejay6128]

@@WhyKnot I believe the span loops resists jamming and is even easier to tie than the farmers loop. Could you confirm or refute this?

[@TreeCamper]

I'm finding it much easier to add carabiners under the final crossing wrap of an alpine butterfly loop that makes it pull out after load. really not much difference other than it looks cleaner and makes more sense in my mind. i can visualize it easier.

[@TreeCamper]

scratch that, biners right in the loops where standing ends pass out...

[@jaykay8570]

Easier and better: make a slip knot, throw two reverse loops around the main loop (as if you were attaching the rope to a cleat), from the side that would pull the knot undone. Done. It will hold charging horses on a highline, can be used as Z rig, or whatever. Never seen it in a knot book, but it's something my dad came up with for highlining his stock.

[@chrisriehl1696]

Nice 1. I just tried it

[@sparkyp6859]

Yes

[@chrisgilligan745]

Much better than alpine butterfly for medium loads.

[@wilsonsolutions8470]

That is fantastic!

[@hughjarce1636]

is that not a 2:1 ?

[@WhyKnot]

Lots of loop knots to choose from here: kzbin.info/aero/PLc7bqVSkVAp5I06yqemSNMdFu5Q70X5R6

[@PoolBilliardsHistory]

That's a 2:1 mechanical advantage, not a 3:1. Small but important detail.

[@EngKhiong]

Why is it a 2:1 mechanical advantage and not 3:1? The mechanical advantage is dependence on which side is the load and the anchor. 3:1 when the load is on the left side while the anchor is on the right. 2:1 when the load is on the right side and anchor on the left.

[@ianbrown_777]

@Need2connect As Roger Soh said, "3:1 when the load is on the left..." because in that case, the carabiner has become a moving pulley.

[@bushcraftnorthof6012]

Slick! I like it.

[@kyleb5518]

It doesnt work, if you pull the end wrapped round the carabiner it just sinches onto it

[@BenyaminMentchale]

Very nice

[@Perktube1]

I like this one better

[@tubeampsrule1]

How would this work with two pulleys?

[@WhyKnot]

Adding pulleys gets complicated very quickly, and is difficult to explain verbally. The RescueResponseGear channel here on youtube has a video on pulley system rules. You can find it here: kzbin.info/www/bejne/anuagp5jltl9mNU. If you are interested in learning about rigging systems it is a very good channel. Also youtube user Tanglerwr has a good series explaining pulley systems titled "Rope and Pulley Systems". Good luck.

[@jeffreylally4722]

did anyone notice it was just 2to1 advantage

[@dilanssanchez]

Jeffrey Lally seem like the last was just a change of direction

[@ianbrown_777]

If the rope at the left of the screen is the fixed end, it is a change of direction and 2:1. If the bight (out of view, presumably around a rail) is the fixed end, it now becomes 3:1. I know it sounds weird and it really messes with your head but if you draw a diagram on paper, you eventually can work it out... based on how many feet of rope are pulled away from the fixed end - for every foot the unfixed end moves toward the fixed end. But you need to be really bored to bother putting in the effort. The way truckers hitches are usually used, it would be 3:1.

[@jeffreylally4722]

well on paper it sounds good. but if you take a real example. go in you back yard. tie the rope to a tree branch. put a 20 lb load on. put a scale on the other end of the rope. pull you would not even get 2:1 advantage. You lose a little to friction.

[@ianbrown_777]

The difference is real in theory 2:1 one way versus 3:1 the other way but yes, there is friction in the system. That can actually be an advantage rather than a disadvantage. That became apparent to me when trying to reef in the leech of a mainsail in 30 knots of wind with a small block and tackle I had made for the job. I could just manage to haul it in but could not hold it while trying to tie off. I failed every time. Next time I rigged the same setup but with a truckers hitch. The friction can easily be overcome with a short surge of force but then the friction actually helps, as it becomes self locking to a fair degree, allowing you to tie off. Real world example where the truckers hitch won out over pulleys.

[@ianbrown_777]

Obviously for situations like hauling yourself up a tree where the effort is sustained, you are much better off with pulleys (around twice the efficiency I believe) but I also think they use self locking Prusiks or some mechanical equivalent, to stop them slipping back.

[@ashoknikalje9774]

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[@ianstradian]

Ever heard of a Truckers hitch? No hardware, same results.

[@markdudley3831]

There's no way a farmer with the IQ of a sheep (3 & thats a smart sheep !) could ever comprehend this knot . They cant work out which is their right hand from their left ...quote ..." I'm looking in the mirror... am I looking @ my right hand or my left ? ... cheers from new zealand the home of 94 M sheep .