![]() Winch configurations that use two or three pulleys (snatch blocks) can triple or quadruple the pulling power, when set up correctly. If used in the correct winching pulley configuration, a single winch can nearly double a winch’s pulling power. FAQs How do you increase the pulling power of a winch?Ī snatch block allows you to multiple the pulling power of a winch by providing mechanical advantage. In this case, the snatch block doesn’t reduce the force required by the winch to pull the stuck vehicle – there is no mechanical advantage.ĭon’t do this. In place of the tree, another large object, could be used, such as a secure boulder. In this winching configuration, the snatch block is attached to a tree saver strap with a shackle to prevent damage to the tree. In the situation depicted above, a tree is used as an anchor so that the rescue vehicle can exert pulling force on the stuck vehicle at a 90-degree angle. In such cases, a snatch block can redirect the force coming from the rescue vehicle to pull the stuck vehicle in the ideal direction. Sometimes it is difficult or impossible to use a rescue vehicle winch to pull directly on a stuck vehicle. Using a Snatch Block to Redirect the Winch Cable This technique can be helpful when the stuck vehicle’s weight exceeds the capacity of the winch or extra force is needed to pull a very stuck vehicle loose. This roughly triples the pulling power of the winch. ![]() Such is the case below, where a second snatch block is attached to the rescue vehicle and the cable passes through it and back to the stuck vehicle. ![]() Multiple snatch blocks can be used in a winching and pulley configuration to further increase the pulling power of the winch. The winch cable runs from the recovery vehicle through the shackle on the stuck vehicle, then connects back to the recovery vehicle with a shackle at a recovery point. The snatch block is connected to the stuck vehicle with a shackle at a sturdy recovery point. Don’t do this.Īnother common technique involves two vehicles, depicted below, where one vehicle is stuck and the other uses its winch to rescue it. This is basically the same as attaching directly to the tree-saver with no snatch block involved. ![]() Since the line is static between the trees, the winch would be required to pull the full load of the vehicle. If the end of the winch cable attached back to a tree instead of the vehicle, as pictured below, the snatch block provides no mechanical advantage. You could anchor directly to the tree-saver with a recovery shackle instead of a snatch block, but using the snatch block has the advantage of reducing the strain on your winch. This is one of the most common recovery techniques with a winch and snatch block. While the snatch block reduces the pulling force required by the winch in this configuration, note that the anchor (the tree in this case) is still bearing the entire load of the vehicle. The winch cable extends from the winch on the vehicle through the snatch block and back to a secure recovery point on the vehicle. It’s not quite double the force, because of friction added by the snatch block itself. In the case below (Technique #1), the snatch block is used to roughly double the pulling force exerted by the winch in a self-recovery situation where a tree is used as an anchor. Using a Snatch Block to Increase Winch Pulling ForceĪ snatch block bolsters the pulling force of the winch by providing mechanical advantage, a function of passing the winch cable around the snatch block’s pulley and back to the vehicle. The physics of using winch snatch blocks can be a bit counterintuitive, but we’ll try to explain where it’s easy to make errors in these common scenarios. Here, we’ll cover several common techniques. Snatch Blocks can be used in a number of different scenarios and configurations in off-road recovery.
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