Teufelberger Sirius Bull Rope, 12mm

The Teufelberger Sirius bull rope in 12mm is a rigging line built for lowering wood, not for climbing. At 12mm it is the lightest of the three and the easiest to handle for pruning-size wood, small tops, and tag lines.

What the 12mm size is good for

A bull rope takes the load every time a piece is cut and caught, so the diameter you pick decides what you can safely lower. The 12mm Sirius bull rope is the lightest of the three and the easiest to handle for pruning-size wood, small tops, and tag lines. It runs through a rigging block, a port-a-wrap, or a capstan winch like any other rigging line.

Size matters at both ends of the rope. Thinner line is lighter to haul up and quicker to reset, while thicker line spreads the load over more fibers and gives the ground person more to grip. Compare sizes in rigging rope before you buy.

Matching it to your gear and keeping it in service

Check that your block sheave, lowering device, and slings accept the diameter and are rated for the loads you plan to put through them. Confirm the rope's rated strength with the seller, and remember that letting a piece run builds far more force than its static weight.

Inspect the full length after each job for cuts, glazing, pulled strands, and flat or stiff spots, and retire it after a severe shock load. Keep it clean and away from saw fuel and bar oil. Rig only within the rated strength of every component in the system, inspect the rope before each job, and make sure the crew is trained in rigging practice under ANSI Z133 and the manufacturer's instructions.