There may be occasions when a fire department is called upon to perform a rescue involving a heavy load or removal of a victim from above or below ground. Mechanical advantage systems increase the ...

In the world of rope rescue, we use mechanical advantage systems really for two reasons. The first being a force increasing tool and the second, a means of reducing the weight of a load during a ...

Pulley systems are simple machines that make lifting heavy objects easier. They consist of a rope or cable that passes over one or more wheels (pulleys). A single pulley changes the direction of force ...

The ParaPull is an ingenious block and tackle pulley system scaled down to work with common 550 paracord. It fits in your pocket and gives you a 6:1 mechanical advantage over any heavy object.