best practices for rigging in arboriculture pdf

Most Natural crotch rigs can be preset from ground and from farther away a/n. This is more like 3layer chessboard on Star Trek than checkers. Pulley gives more loading, setup than the Natural crotching suggested and could share across both upper crotches more evenly into the lower, as also side force used to compress together rather than shear lower apart type force. Have to start real sweated tight, and tilt down to self tighten more, relieve to maintain tension balanced to load as needed. Slow becomes smooth becomes fast as turtle outpaces hare cleanly w/o missing a trick. Such light ballet handling gives less shock, handles more lightly and predictably w/o stopping and no facing. Folding to side purposefully so not as full force as downward into greatest pull of gravity. Get it just right rope tension and angle and very little to no pressure on 'hinge' as all on rope and easy disconnect. Might try w/o hinge fold down and over so hitch point more under support at tearoff. If raise 2nd pulley about same angle greater than 1st may then look towards reverse strategy of carabinier as close to load guide but higher 2nd support one babied with pulley for really carrying the load.Īngle of rig line pulls somewhat or fully back towards climber. Present lower pulley position I might just use carabineer as (s)light redirect. If guying back I would go higher on load side to have leverage over load pull and then perhaps bend that tightened line. 2nd even higher starts relieving 1st of then even the primary load force too.

Matching heights with 2nd to 1st takes all control leg force off 1st pulley.

Might put second pulley higher, it's side load would increase, but it is pulling lower crotch closed, first pulley from load pulls same open.

Best practices for rigging in arboriculture pdf