![]() If you pull at an angle, the cable is more likely to bunch up on one side of the winch drum. This is easiest when you are winching straight forward. Then use the tension from the two off-set anchor points to position the block directly in front of your vehicle.Ī winching essential for safety and effectiveness. One of the rules of winching is to make sure your cable spools up on the winch drum evenly. Attach the snatch block to the second anchor point with a choke chain. Then you need to identify a second anchor point that’s angled in the opposite direction as the first anchor point. This involves running the winch cable through the snatch block to an anchor point that is off at an angle. When this isn’t possible, you can use a snatch block to set up an angled, single-line pull. When do you use it? In a recovery situation, ideally you would have an anchor point located directly in front of your vehicle, so that you don’t have to angle your winch cable. A snatch block will increase your winch’s pulling power significantly, and will give you more options in self-recovery situations. It’s a handy piece of equipment that can improve the function of your winch. Because the side plate opens, you don’t have to thread your winch cable through the opening, instead you open the side plate, fit the cable over the pulley, and then close the side plate. If the operator rigs a single line pull to the tree anchor directly in front of the vehicle and engages the winch, the load on both the winch and the tree is 4,000 pounds.What is a snatch block? A snatch block is a pulley block with a side plate that swings open. Let’s assume that in all our scenarios, the bogged vehicle needs 4,000 pounds of pull to retrieve it. Therefore the winch is operating at its rated power.īut now comes the not-so-simple part. On the other hand, in our simple redirected-pull scenario above, only the line running from the pulley to the bogged vehicle will shorten-the distance between the pulley and the winching vehicle will not change. For example, in the illustration below labelled Double-line Pull, both the line from the winch to the pulley and the line from the pulley back to the vehicle will shorten as the winch pulls, thus the power is multiplied by two. The easiest way to figure out whether or not you are multiplying winch power in any situation is to count how many lines are shortening when you engage the winch. When you learn how to rig a redirected pull you’ll also learn that this use of a pulley does not multiply the power of the winch, nor does it halve the line speed. A suitable anchor such as a tree is employed as a redirect point, using a tree strap and a pulley. It’s frequently used to recover a bogged vehicle when a recovery vehicle equipped with a winch cannot be positioned directly in front of it. The other valuable use of a pulley is to redirect a pull-around a corner as it were-when a straight one is either awkward, dangerous, or impossible. Thus you receive a double benefit during a difficult recovery.) (A corollary to this is that by pulling more line off the winch to rig a double-line pull, you are further increasing the power of the winch by reducing the layers of line on the drum. Most impressively, when a winch line from a vehicle is led through a pulley attached to an anchor and then back to a recovery point on the vehicle, the power of the winch is essentially doubled (minus minor frictional losses) while line speed is halved. Take any reasonably comprehensive winching course and, once you’ve covered the basic single-line pull, you’ll be introduced to the snatch block-or, more recently, its elegant one-piece alternative, the billet-aluminum recovery ring.Ī pulley-which is what both devices are-serves a couple of purposes in a winch system.
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