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Hauling Systems

Hauling Systems. What Is a Hauling System?. Combination of ropes and hardware assembled to form a mechanical advantage used to move a load from one point to another. Named for the amount of advantage it offers 3:1, 4:1, 9:1. Definitions.

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Hauling Systems

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  1. Hauling Systems

  2. What Is a Hauling System? • Combination of ropes and hardware assembled to form a mechanical advantage used to move a load from one point to another. • Named for the amount of advantage it offers • 3:1, 4:1, 9:1

  3. Definitions • Directional pulley: stationary pulley used to change the direction of pull on a rope • Haul cam: camming device that secures the haul line to the load line • Soft or hard • Haul line: rope used to pull on • Load line: obvious…

  4. Definitions • Mechanical advantage pulley: moving pulley that is attached to the load or haul cam that adds MA • Piggyback system: Common name given to a 4:1 MA (it is two 2:1 MA systems piggy backed to each other) • Ratchet cam: Holds the load line to keep from losing what you have gained with MA

  5. Elements of Hauling System • Cams • Soft and hard • Pulleys • Single, double and knot passing (Kootney) • Haul line • Load line

  6. Munter

  7. 2:1

  8. 3:1 Z Rig

  9. 3:1 Z Rig

  10. 3:1 Z Rig

  11. 4:1 Piggyback

  12. 4:1 Piggyback

  13. 4:1 Piggyback

  14. 5:1 • Simple: • Use two double pulleys

  15. 6:1

  16. 9:1

  17. Hauling System Positions • Haul team: runs haul line • Ratchet tender: tends ratchet cam • Team leader: gives commands • Safety tender: operates Munter hitch • Load watch: Communicates position of load to team leader

  18. Commands • Haul • Haul slow • Set • Slack • Stop!

  19. Questions? Lets Build Some Systems!

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