Moderator: Tim White
tchudson wrote:I told him that he was going to have a hard time getting out of the entrance pit since it was rigged with two of them....
I recall being told to never use alu carabiners on places were friction from a passing rope can create heat.
Repeated heating (and cooling) the alu was said to weaken the internal structure of the alu and thus making it UNrealiable since you don't know it's breaking strength anymore... Doh!
Steel is supposed to be less sensitive to this.
I recall being told to never use alu carabiners on places were friction from a passing rope can create heat.
geoff wrote:Using 10mm here in UK as the norm and Petzl Stop descender, you may like to try a steel "handy" as your braking krab.
this is a purpose designed steel krab where the rope is pulled up into a vee. It does not cause rope wear but gives exceptional control. See Alpine Caving Techniques for the benefit's, including rescue. It is lighter than a steel krab.
I personally dont like the Petzl Freino as by comparison it give poor resistance and not being steel is subject to quick wear on muddy rope.
Geoff
Mark620 wrote:for true wear resistance has anyone tried ceramic coated rack bars. Such as partially stabilized zirconium?
Mark620 wrote:for true wear resistance has anyone tried ceramic coated rack bars. Such as partially stabilized zirconium?
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