Self-arrest
A self-arrest describes the technique of using a lanyard to stop a fall when both spurs have slipped or gaffed out .
This technique can be practiced by deliberately kicking the gaffs out of the trunk and using the self-arrest method to prevent slipping down . The use of gloves is recommended when practicing this technique - cuts and grazes to the knuckles will result if gloves are not worn .
It is essential to practice this technique near ground level until reasonable proficiency has been achieved .
To perform a self-arrest whilst spur climbing :
1 . Hold each side of the lanyard as usual .
2 . Push both hands together whilst rolling the knuckles up and inwards and bringing the elbows downward and inward to contact the trunk .
3 . This will force the lanyard tight around the stem and prevent the climber from slipping down . The climber ’ s elbows will naturally drop to contact the trunk , ‘ levering ’ the lanyard tight around the stem .
This self-arrest function will occur naturally if the climber ’ s hand and body position is correct whilst spurring .
Good technique and preparation , correct fit , sharp gaffs , understanding how gaffing out occurs and being practiced at self-arrest whilst spur climbing are all critical to safe and efficient tree climbing with spikes .
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