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Port-a-Wrap

Port-a-Wrap

Port-a-Wrap

The Buckingham Port-a-Wrap, the original arborist friction device. Still made in the U.S.A.! Accept no imitations. Lower limbs and trunk wood with wraps on the Portawrap for excellent control.

The Buckingham Port-a-Wrap is the go-to device for friction control when rigging out wood. Buck PORT-A-WRAPS are compact rope friction devices designed for lowering heavy objects from height in a controlled and predictable manner. The Buck Port-a-Wrap has been widely popular among the modern-day arborist; old-school arborists would lower heavy wood by wrapping the lines around nearby trees causing damage to trees and often causing accidents. With the Buck Port-A-Wrap lowering heavy wood can be controlled and done at a much faster pace while also lowering the potential for an accident, and preserving the tree from damage.

The original Buckingham Port-a-Wrap is still made in the USA.

Capstan Equation

Samson’s rope engineers gave us the table below to illustrate the force needed to prevent rope movement on the Large Port-a-Wrap. The weight of the load is listed in the left-most column, and the number of wraps across the top row. Cross-reference to see the pounds of force needed to prevent rope movement. Table assumes a coefficient of friction from 0.1 to 0.2.

Number of Wraps on Large Port-a-Wrap
  0.5 1.5 2.5 3.5
100 lb 53 - 73 8 - 28 0 - 6 0 - 1
200 lb 107 - 146 16 - 57 1 - 12 0 - 1
300 lb 160 - 219 24 - 85 1 - 18 0 - 2
400 lb 213 - 292 32 - 114 1 - 24 0 - 3
500 lb 267 - 365 41 - 142 2 - 30 0 - 3