Simple Machine Woodland Hoist

Description

http://www.thepathfinderstore.com

Dave Canterbury, David Canterbury, The Pathfinder School,Bush Craft ,Survival skills, Historical Lore, Primitive Skills, Archery, Hunting, Trapping, Fishing, Navigation, Knives, Axes, Fire, Water, Shelter, Search and Rescue

Tags: Bushcraft,Survival,David Canterbury,Dave Canterbury,Pathfinder,The Pathfinder School,Archery,Hunting,Fishing,Camping,Primitive Skills,Fire,Water,Shelter,Navigation,First Aid,Search and Rescue,Signaling,Prepper,Preparedness,Self Reliance,Survivability,The 10 C's,Knives,Axes,Saws,Bow Drill,Ferrocerium Rod,Ferro Rod,Tarp,Hammock,Canteen,Cooking,Longhunter,Trapping

Video Transcription

one of guys I'm Dave Canterbury with the Pathfinder school what I'm going to show you today is a simple machine it's a vertical craning device that you can use to move or lift heavy weight using a lever to gain mechanical advantage over a dead weight we've got a log laying underneath the tripod here that probably only ways i don't know somewhere around 100 pounds something like that it's a piece of cherry that is about 10-12 inches in diameter and it's frozen so it's pretty heavy piece of wood and we're going to use a tripod over top of this in a simple crane technique to gain mechanical advantage now you can use rope for this i'm using mule tape in this example which is something that morsi on skis very fond of it's lighter weight and rope and has a very high tensile strength I wouldn't trust it to rappel off of it but for applications of things like this binding flip-flop lunches pulling loads and things i would probably trust it for that up to its tensile strength again this is 2,500 pound tensile strength and i'm not playing to lift anything near that amount of weight with it but it is a lightweight cordage that you can carry a hundred foot of it doesn't weigh very much and doesn't take up a lot of room in your pack and it has lots of applications like the one I'm going to show you today so this application can be transferred to lots and lots of things we've built a tripod over this log because we didn't have any overhead branches to throw our rope recorded over top up we don't have any pulleys any blocking tackles or anything like that so we're going to use loops in the Rope to gain mechanical advantage with a lever I'm going to walk you through how to put this together in a few minutes but we've got basically two butterfly loops about three and a half feet apart that length or that distance between those two butterfly knots is going to be the amount that you're going to be able to lift this up and down so in an application where you needed to maybe lift a log up to cut it so that you have one end of it hanging so when you cut it off and false free you're not bearing your saw blade into the mud of the dirt or maybe you had a log on phone on to something or onto a trail that you needed to move it you didn't have the means to cut it but you needed to lift it up to move it or swing it you could do the same thing with this there's lots and lots of applications for this all the way up to building cabins so it's a very good little machine to learn and it's very simple to understand you only really need to know one specific not which is the butterfly not to use this and you could use prussic loops on this but I wouldn't trust them near as far as I would trust just a butterfly loop tie into tied into my line so what we'll do is we'll take these two loops and we've got a lever here that is about eight feet long and it's a pretty stout piece of lumber here it's not green by any means it was cut last year but it's not something that's rotted so much is going to break I'm going to be able to get good mechanical advantage without worrying about this thing bending or breaking under the load that I'm trying to pick up and it will have to match you'll have to match things to the loading you're trying to- so what we're going to do is we're just going to come in through the first loop and go down and then come into the second loop like this and then we will simply turn this against itself and pull down on this lever and that will click the load up off the ground like this we can now put that load or swing that low to anywhere we need to in this general area or we could just lift it up to put something underneath it where we need to roll it and move it or what we wanted to cut it or something like that so this is a very good easy system to use for this purpose now what I'm going to do is I'm going to show you how to put this together and how this works and remember you know I'm not using a lot of downward strength to move this and I'm sure there's just log weighs a little over a hundred pounds when we're done we just pull these out and all of these knots should come undone very easily from this mule tape if we tied the right now one of the things that I kind of like about this mule tape is it's nylon and it's kind of slick so it doesn't tend to bind against itself when you put knots in it they come undone fairly easily depending on the not you're using if you're using slip type knots they come undone very very easily okay there's a couple different ways that you can tie these butterfly knots the first one is you can just take a loop in the line so now i have both ends of my line going two directions and i have a loop crossed over in the line here if I cross that loop over again and I make like a figure eight right here then I'm going to take this and put it all the way over the top of these two so this outside loop is going to come over these two cross lines underneath and pull through and when I gather this up and tighten this all uptight it'll kind of look like a necktie from the backside like you would put around your shirt it's going to have a couple v's coming off of it and like a Windsor knot looking thing right here in the front and again these knots are pretty easy to get undone because the stuffs pretty slick it doesn't bind against itself very well so again I put a loop in the line here like this I came in and put a second loop in the same line or in the same loop so now i have a figure eight here I bring this loop over the top of the two where they cross and back underneath and when I pull that through it's going to give me those two wings right there of the butterfly just like that and again it looks like a tie knot on this side so if you're going to tie this knot on a running line or a hanging line what I like to do is take it and lay it over my hand so this is my hanging portion and I wrap it around my hand two times just like that then I'll take this and bring it all the way over so the most outside toward my fingertips I bring all the way over and I hold it with my thumb then I bring the middle one all the way over and underneath and pull it like this and I'm going to get that same not when I tighten all this stuff down it's going to give me that same butterfly type not with the two wings and that winds are looking not on the front and you'll have to dress the nod up a little bit to really be able to see it but you'll have two wings on the back side and you'll have that Windsor cuff on the front and again comes undone pretty easy there's several ways to tie butterfly knots from butterflies to alpine and butterflies and all that stuff but if I've got it hanging the line this works pretty good over once / twice bring that to the inside bring this all the way over and under just like that I pull the whole thing tight just like that spread that out you get those butterfly wings you got that Windsor knot on the front side that works pretty well so what we did with this log was first get this not all the way out of here you may have to dig your way under that log or roll it with a stick or whatever the case may be to get something underneath it like a line and once you get a line in there then you can pull it through and all I did with this was I just came in here and tie a simple like a slippery hitch where I came in here tied it in came through here and tie a slip in it so I could pull it out but it will be a slipping not that will bind on itself down to the log when I wanted out all I have to do is pull it it comes undone just like that okay that was a then I tied my first butterfly not in my line now at the top I just dropped it through the center of the tripod pulled it fairly taught

wrapped around once here wove it in once here just like this came around this one more time over the top of my tripod and then just use these two crossing this line as another hitch and just dropped it over the loop and pull it down tight like that that should be very simple so once you've got your loops in there you're secure all you need to do is feed this lever through your loops just like this turn it sideways and lever it down to pick up whatever you're trying to move one thing that's important to understand what this system is just like any lover the longer the lever is that better your mechanical advantage if I get up here closer to this tripod and try to lift this load i got to put a lot of weight on to get it off the ground but if i come out here toward the end i can lift that load with one arm and two hands it's real easy but once you get in here you got to put a lot of weight on that thing to get it off the ground so your mechanical advantage comes from the lever being longer so remember that if you're setting up a system like this the beauty of this system again is how quick it is to use and get it up and down and recover your cordage you