 Re: Convert me from Natural crotch to Arbor block
Quercus,
Floating false crotch works for rigging and climbing but this option demands a more complex understanding about rigging to mechanical disadvantage.
Take it away=
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Minuses for natural crotch rigging=
Increased rope wear and quick deterioration
Unknown amount of friction generated by variety of tree bark
Unknown amount of friction generated by varitey of tree diameters
Limited to only natural locations
Pluses for using blocks and pulleys
Little rope wear
Known friction in block/pulley...theoretically zero
Since the friction is managed at the lowering device the groundies can make quick adjustments to take into account the estimated log/branch weight. The groundie can dial in the number of wraps very easily.
A sling can be choked anywhere on a bare stem/branch to locate the perfect rigging point |