I have had good luck with synthetic kevlar rope (the 5/16 line has 13,700 lbs capacity). Then add any resistance since the tree is stuck. You can calculate the approximate weight of the tree based on the attached file and the cord to weight conversion. I will attach a file that estimates the volume in cords of a tree of a given diameter, A cord of wood is 2 to 2.5 tons green. standing "inside" the "V" formed by the pulley.A quick search suggested a 20" dbh tree would weight 7000 lbs. As a point of reference, you are pulling a tree that might weigh 1000 or more pounds. You can get non-self releasing snatch pulleys at hardware stores, but I don't know what their weight capacity is. An injury to you or a friend helping you isn't worth $400 (or whatever, I don't recall the price). Strong enough, big enough, and cheap enough for you are hard to judge for me. from this dealer (not endorsements, just information). Put a coat, blanket, or line weight on the winch line in case of breakage or kick back.I bought a heavy and rather expensive (a few hundred $$) a few years ago, and it works really well.Don’t use a hook on the end of a cable, only anchor shackles.When considering the working load limit of your gear, keep in mind that every snatch block you add actually adds additional load (if pulling back on the source itself).Always use gear rated for the working load limit you’re pulling (wire rope, snatch blocks, and anchor shackles).Make sure to use a shackle with an appropriate working load limit (WLL) that can handle the load to prevent it from breaking and causing damage.Use the winch slow and steady to pull the stuck vehicle out using the winch and snatch block.Connect the ends of the winch line to the stuck vehicle and the rescue vehicle at appropriate points.Thread the winch line through the snatch block pulley prior to connecting it to the shackle.Use a shackle to connect the snatch block to the tree saver.Find a tree that is large enough to handle the load of the vehicle being pulled.In addition to having a snatch block, you should also keep a tree saver in your towing toolbox.Ī tree saver is a strap made from nylon or polyester webbing that helps connect your winch to a tree for recovery purposes.įollow these steps to connect a snatch block to a tree saver: How To Connect A Snatch Block To A Tree Saver We should note that it does not increase the power of the winch in this example, because the snatch block is not looping back to the winch. This gives you tons of versatility and maneuvering options. How To Use A Snatch Block To Redirect A Winch DiagramĪs you can see, the tree is providing an anchor point so that the rescue vehicle can pull the other vehicle out, even though it is not directly ahead of it. Jump to about halfway through the video for some great snatch block footage: Here’s a great video explaining the power of pulleys and snatch blocks, and the differences between them. So instead of the winch pulling against a tree, rock, or another vehicle, it’s actually pulling on itself, which increases the power. The difference here is that you’re looping the winch cable around the snatch block at the anchor point, then reconnecting it back to your vehicle that the winch is on. Pulleys don’t increase winch power, so how can a snatch block? So if a snatch block (or pulley block) is just a heavy-duty pulley, how can it increase the mechanical advantage of your winch? You can attach snatch blocks to trees, shackles, recovery straps, or other anchor items. The plates have holes on them that allow the snatch block to be attached to different accessories to anchor them. You can twist the two side plates away from each other so you can insert the winch line. Snatch blocks are pretty simple in their design, consisting of a pulley (or sheave) between two side plates made of metal, and everything’s held together with a pin (called a sheave pin).
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