![]() It is, therefore, wise to select the proper rigging system to be used based upon the weight of the object and the type and capacity of the power that is available. Adding snatch blocks to a rigging changes the direction of pull, but the mechanical advantage is not affected. Note that the weight is pulled by a single luff tackle, which has a mechanical advantage of 3 (mechanical advantage is discussed below). This is an ideal way to move objects in limited spaces. Snatch blocks ordinarily are used where it is necessary to change the direction of the pull on a line.įigure 4-23 shows a system of moving a heavy object horizontally away from the power source using snatch blocks. SNATCH BLOCKS AND FAIRLEADSĪ snatch block (figure 4-22) is a single-sheave block made so that the shell opens on one side at the base of the hook to permit a rope or line to be slipped over a sheave without threading the end of it through the block. Also, remember that this rule refers to the diameter of the sheave rather than to the size of the block. Remember that with wire rope, it is diameter rather than circumference that is important. In the absence of these, a rough rule of thumb is that the sheave diameter should be about 20 times the diameter of the wire. Wire rope manufacturers issue tables that give the proper sheave diameters used with the various types and sizes of wire rope they manufacture. ![]() However, the sheave diameter should be about twice the size of the circumference of the line used. As a rule, you are more likely to know the block size than the sheave diameter. However, an inch or so either way doesn't matter too much for example, a 3-inch line may be reeved onto an 8-inch block with no ill effects. This could be a tree, an elk or moose, a truck, or even another ATV or UTV.Line. Next, you’ll need some rope or a strap to loop around your anchor or the thing you’re trying to extract. For example: If you have 50 feet of rope or cable, you’ll want to be less than 25 feet away so you don’t spool your winch. To do this, make sure you are close enough to run your winch out to the object you’re pulling on and back to the machine. Sometimes it’s handy to be able to double your pulling power, and a single snatch block can handle that. And, if you run your winch too hard without proper rest cycles, you can risk damaging it. Either way, sometimes the direct pulling power of your winch just isn’t enough. You might be stuck in a mud hole, or need to drag a big bull moose out of a pond. Tyler Freelįirst, the pulley of the snatch block can be used to enhance the pulling power of your winch. Snatch Blocks Increase Pulling Power A snatch block can get you out of a sticky situation that winch may not be able to. It’s a tool that might not always see regular use, but when you need it, you’ll be very glad to have it. ![]() A 2-ton (4,000-pound) rated snatch block is usually affordable, and small enough to fit in the tool storage compartments of many ATVs and UTVs. The pulley can pop apart and close back on the winch rope, so the rope runs through the pulley. In this case, the pulley should be used with your winch rope or cable. Most folks will have a flat tire repair kit and a small tool kit on board, but another incredibly valuable tool to have is a snatch block (or two).Ī basic snatch block should have a simple pulley and a hook, which can be hooked onto an anchor point. And if you own an ATV or UTV, you likely have a few essential items that never leave your rig. ![]() I’ve covered plenty of valuable ATV aftermarket upgrades, parts, and accessories in the past. But sometimes they still need a little help. They are more powerful, nimble, and technologically advanced than ever before. Today’s ATVs and UTVs are tremendous machines. We may earn revenue from the products available on this page and participate in affiliate programs.
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