General Climbing Discussion

Topic	Date	User
Jumar rigging	24-Dec-2004 At 3:56:09 PM	AlanD
Message
My rope walking system for caving consisted of two (yellow) jumars and CMI Shorty used in the chest position. I also had a spare grey Jumar and Gibbs without the spring. I understand there were meant to be some documented cases of the Gibbs biting through the rope when shock loaded, they could be a little to aggressive. As for the jumars, anything that is cast is always a candidate to because of the difficulting in producing a inclusion free casting. Wrought material, those that are machined, forged or rolled as in the case of the SMI shorty are much more capable of surviving being dropped..

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