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Re: How much Force/Load doing a Snatch recovery...?

When you're talking about stopping a moving vehicle, and you want to calculate the force required to stop it, you need more information than what is given. For starters you need the distance over which that force is applied to affect the stop. This being a kinetic strap/rope, that is impossible to determine, as the force increases with the rope stretching. Because that happens, the vehicle slows down, and/or your engine applies additional force, but more than likely, a combination, which makes an accurate calculation even more difficult.

You've got a better chance of calculating the force required for a non-kinetic strap. I'm not volunteering to do a snatch recovery using a tow strap.

Calculations for a kinetic strap will always come out higher than the real world measurement, purely because it's a progressively increasing force, and not a constant. The rate of force increase would be directly related to the elasticity of the rope. Most calculations are based on a constant force.

With enough tests you would be able to establish a factor with which you can divide the calculated force to get a closer guess at the real figure. That factor would of course be unique for every rope/strap type, and will change with use and condition.

Sakkie Coetzee

**Some people say I have a "short temper"....I see it as swift and assertive reaction to Bull! **

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