For everyone that’s against putting a twist in your straps...

Discussion in 'Flatbed Trucking Forum' started by kylefitzy, Apr 25, 2021.

  1. God prefers Diesels

    God prefers Diesels Road Train Member

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    Same thing as multiple parts line on a crane. Need more cable strength? Reeve through more pulleys. Each part line increases pull strength up to boom failure.

    In a Wireline truck, we're running cable from the truck up to a sheave on the crane, and then back down into a wellbore. If the crane is rigged up with the strength to handle 13k (common with a 45t crane), then I could only put 6,500lbs on the Wireline, because that's putting 13k on the crane.
     
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  3. Hammer166

    Hammer166 Crusty Information Officer

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    Similar to running multiple lines , but basically going the other direction. Multiple lines lowers the load on the line, with indirect, we're not reducing travel (thus gaining leverage,) we're just multiplying the down force with every leg. The load on the line doesn't change, only the applied force.

    Nice hear a real world example, too!
     
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  4. Kyle G.

    Kyle G. Road Train Member

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    Great explanation, thanks .

    For what it's worth, I always use enough straps to cover the total weight of the load anyway. I always picture the loaded trailer suspended upside down, and I secure it in such a way that nothing will move if the trailer is upside down. A bit overkill usually, but why not.

    Of course... The ultimate goal is to not actually flip the trailer upside down LOL.
     
  5. God prefers Diesels

    God prefers Diesels Road Train Member

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    Overkill is the best kill.
     
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