Author Topic: using a petzl shunt when riding the pig?  (Read 2026 times)

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Offline cobbledik

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using a petzl shunt when riding the pig?
« on: December 02, 2010, 07:04:39 pm »
I've been wondering about using a shunt as a backup for rapping when riding a heavy pig.  I know that the shunt is supposed to be above the rap device but I feel like this is a requirement so that it does not get caught up in the rap device if it needs to be engaged. When riding a pig, there's enough space between myself and the rap device that I feel like I can attach the shunt to my belay loop and if it needs to engage I will not need to worry about it getting sucked up into the rap device.

Am I missing something in the scenario or is everything kosher in this setup?
Sometimes the difference between a layman and a journeyman is simply what he is allowed to believe himself to be.

Offline Chad

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Re: using a petzl shunt when riding the pig?
« Reply #1 on: December 02, 2010, 09:02:03 pm »
I have always used the Shunt below, as a back-up off my belay loop, with the rappel device either on an extension sling off my harness (light pig) or more directly to the bag (heavier pig).

The Shunt would work either above the rappel device (useful when passing knots, but maybe not as convenient as a Jumar/jug). However it was originally conceived as a rappel back-up for below the rappel device. In this mode, it seems more secure anyway because the rappel device is providing some braking force before the rope even comes to the Shunt.

Offline Garbonzo

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Re: using a petzl shunt when riding the pig?
« Reply #2 on: December 03, 2010, 04:37:33 pm »
I usually just use the same kleimheist knot I use for normal rapping, and I've never had issues stopping and such.  I rig the rap device to the pigs and use the knot one my leg loop.

Offline johnmac

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Re: using a petzl shunt when riding the pig?
« Reply #3 on: December 04, 2010, 05:42:41 pm »
I use a french prusisk for a backup.

Offline mungeclimber

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Re: using a petzl shunt when riding the pig?
« Reply #4 on: December 06, 2010, 11:37:16 am »
"french" ?  new term for me.

Offline Garbonzo

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Re: using a petzl shunt when riding the pig?
« Reply #5 on: December 06, 2010, 11:44:29 am »
Looked up French Prussik, and indeed it is the knot I use, just 3-4 wraps and both ends clipped into the biner on my leg loop.  I've never heard it called a French Prussik before.  I'm too cheap to buy a shunt.