Source: bought it new
Price Paid: retail
Unnecessary, "psychological" backup.
- Creates a sense of security
- Creates a false sense of security
I was terrified of rappelling and ascending ropes 14 years ago. So I bought the Shunt as a "back up" in case I messed up a rappel.
The Shunt connects from your harness to the rope above your rappel device. To descend, you must use your non-dominate hand to hold open the cam. If you let go, the cam slams shut, pinching the rope and halting your descent.
To that end, this device works fine.
HOWEVER, human nature in a fall is to grab hold and squeeze tighter. In a panic situation, a person does not unconsciously let go (next time you're with a driver who slams on the brakes, notice your clenched fists afterwards). So in order for the Shunt to actually work, you have to intentionally let go at a moment when your nature reaction is to squeeze tighter.
The Shunt gave me the initial psychological security I needed to get use to rope work. But once I became familiar and accustomed to my equipment, I realized how useless this piece of equipment really is.
Save your money and take a quality rappelling class!
Where to Buy
Here's what other sites are saying:
Used below the rappel device, the Petzl Shunt works as a rappel back-up and replaces self- jamming knots like the Prusik. Works on single and double ropes. Easy to install on the rope Smooth clamping surfaces won't damage rope May be used to ascend single or doubled rope
Free Shipping. Petzl Shunt Ascender DECENT FEATURES of the Petzl Shunt Ascender Easy to install on the rope Smooth clamping surfaces won't damage rope May be used to ascend single or doubled rope The SPECS of the Petzl Shunt Ascender Weight: 188 g Case Quantity: 14 For use on single ropes 10-11 mm or double ropes 8-11 mm Certification(s): CE EN 567, UIAA Aluminum frame ALL CLIMBING SALES ARE FINAL.
Use the Shunt from Petzl back-up rope clamp below the belay device in place of a mechanical prusik knot. Install it on your rope easily by locking its smooth, rope-friendly clamping surfaces onto either single or identical double ropes for added security on ascents.
- Mountain Gear
FeaturesA mechanical replacement for self-jamming knots Prussik, Machard.... Positioned below a descender, the Shunt acts as a back-up belay for an abseil descent. It locks onto the rope as soon as you release it and follows your descent when you press on it.For use on single rope 10 to 11 mm or double 8 to 11 mm. 188 g
- US Outdoor Store