The Petzl Tibloc is a compact emergency ascender that is an essential back up on any big wall or mountain route.
Easy to use it slides up the rope but when downward pressure is applied the teeth bite the rope holding you firmly in place. It's best used as a Prusik replacement in self rescue situations but cam also be used as part of a hauling system.
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The Petzl Tiblocs are small, light and very efficient-looking. I carried two as part of my crevasse rescue kit on a recent trip to Antarctica. Tying the advised retention cords is essential, I'd say. I would use them instantly for self-rescue if necessary because they would be quicker and easier to install in an emergency than my usual prusiks. They are, however, potentially aggressive on the rope. A friend involved in roped access work advises that he blunts the spikes to preserve his ropes, but I'd keep them sharp and effective for emergencies and worry about the rope later. As it happens, I was involved in the successful crevasse rescue of a third party during our expedition but chose to use a Ropeman and French prusik for friction on that occasion.
A very simple bit of equipment, but simple in this case it good. As it says on the tin, it is an emergency ascender, and that is what I intend to use it for. the spikes on the inside held very well on a sample of rope I tested, but Iím fairly sure would trash if it were allowed to slip through.
Very functional piece of equipment though I hope never to be in the situation where I need to use it!
After falling down a crevasse whilst out in the Icelandic glaciers I thought it time to step up my game. I bought two of these and have since put myself in such situations just to test them.
They are brilliant items and require so little effort for when your hands are cold and nipped. Unlike a prussic there is no faffing and this item could quite literally save your life.
A+ and what a great item.
Note: no recommended for daily use as it can damage ropes due to its aggressive points.
For me I only use this in emergencies - it is an excellent, safe, user friendly device but those teeth do cause obvious damage to ropes having used it on various brands of rope. However, as a get out of jail free card this is just what you want and can be left on the harness as a "just in case" rather than an item intended for daily use.
Great device for my occasional aid climbing, or if I get stuck on a route. First impressions, it looks a bit like a hanger, and that certainly happens on the rope. Compared to other ascenders, it is very simple, and misuse of equipment is many people's downfall. The only negative is that it can be hard to rack, unless you have a dedicated carabiner for it, but the problem can be solved by attaching a loop of nylon cord to one of the holes.
Perfect companion on the glacier. Works well as an secure and fast autoblock on a crevasse rescue, replacing prusiks for various applications. Easy to misplace due to size, but that can be fixed by adding a small loop of thin nylon rope to secure it on the carabiner.
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