Page 147 - Rappelling
P. 147

Rappelling with a Grigri.                      The Petzl Stop.




                                                                Rappel Rack

                                                                Really just a high-tech version of a carabiner brake
                                                                system, the rappel rack is favored by cavers for mak-
                                                                ing long drops on free-hanging ropes into deep pits
                                                                and sumps. Because it has few moving parts (unlike
                                                                the Petzl Stop or Petzl Grigri), it is less likely to be
                                                                rendered inoperable due to the wet, muddy, or dirty
                                                                ropes often encountered in a caving environment.
                                                                   The rappel rack does not impart twists to the
                                                                rope, and the device dissipates heat by using mul-
                                                                tiple brake bars. The rack’s big advantage is that
                                                                more friction can be added as needed, based on
                                                                the weight of the rope below the device and the
                                                                terrain. One way to do this is to simply add and
                 The Trango Cinch is another popular assisted   engage more brake bars into the system. Another
                 braking device that can also be used for       way is by adjusting the brake bars and pushing them
                 rappelling.                                    closer together. For a big free-hanging rappel, the


                 136   RAPPELLING








            Rappelling_i-174_3pp_CS55le.indd   136                                                         7/24/13   10:18 AM
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