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 offers3:1, 4:1, 9:1

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 lineSoft or hard

Haul line: rope used to pull on

Load line: obvious…

Definitions

Mechanical advantage pulley: moving pulley that is attached to the load or haul cam that adds MAPiggyback 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

Elements of Hauling System

CamsSoft and hard

PulleysSingle, double and knot passing (Kootney)

Haul line

Load line

Munter

2:1

3:1 Z Rig

3:1 Z Rig

3:1 Z Rig

4:1 Piggyback

4:1 Piggyback

4:1 Piggyback

5:1

Simple:Use two double pulleys

6:1

9:1

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

Commands

Haul

Haul slow

Set

Slack

Stop!

Questions?

Lets Build Some Systems!