inthebiz

Grivel makes a long center bar that will increase most of their crampon models to size 14+depending on the boot.

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.