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Relative "dyamicicity" of various belay devices


catbirdseat

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i just got the b52 to replace my atc, i really like it. for belaying it feeds smooth and has a super secure feeling when locked off (it cams the rope against the biner). yes you need two lockers to belay a second in autolock, but it seems to work just as well as the reverso for that purpose. haven't used it with two ropes though.

 

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With most modern belay devices (grigri and belay plates not included) about 2-3 feet of rope will slip thru the device in a factor 2 fall, using about 40lbs of resistance in the break-hand. This slipage does more to minimize heat damage to the rope than it does for the dynamics. Devices with less slipage did considerably more damage to the rope.

Edited by inthebiz
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