: made of aeronautical high resistent certifiedaluminiumfrench made and manufactered in the body,successfully tested according to UIAA 129 procedure.: 125 mm high X 81mm large X 10 mm width: 125 gr (4,4oz): ropes from 8,5 to 12 mm, with possibilities for experts on thinner diameters: SCHIAVINATO Jean-Claude (EFC instructor)
[email protected]: other EFC instructors: 2 years of feedback through training courses, meetings, club activities, beginners training
Raw material
DimensionsWeightCompatibility
Conception
With contributions ofTesting period
GENERAL INFORMATIONS update oct 2016
The manufacturer doesn’t engage any responsability if the device is used in other ways than those exposed in thisdocument. ATK descender as other braking devices needs appropriate training in safe situations or with experienced
people to avoid dangerous or injuring issues. 1
- Unlosable device (with an appropriate carabiner)
- Intuitive brakes for beginners
- Simple Hard Stop, on the same basis with single or double ropes
- avoid bad twists on the rope when used properly
- adjustable braking needs on the go according to manyparameters
- use of double windows : ATK system avoid rope damage but also separate double ropes without twists 2
3
One of the most used, on vertical drops, rope isadjusted just above the water
Classicalway
4
For left-handed
In this document, onlyright-handed uses
are shown !
Just invert the devicefor left-handed uses
Other brakingson single rope
Chose braking according to your weight, the verticalityof the drop, the rope diameter and its fluency.
5
Freinage +_
HARD Stop
One of the big advantage of the device :
use the same way to stop with single or double ropes
étape 1 étape 2 Hard Stop
6
Suspended anchors or high vertical drops - first braking
« Rapid » + one turn (fig 1), providelimited twists on the rope
fig 1
Waiting position Hard Stop
7
Suspended anchors or high vertical drops - second braking
Rapid + upper horn + friction on carabiner (fig 1), the rope will have nearly no twists
fig 1
Waiting position or additionnal braking
Hard Stop
8
SHORT HARD Stop
For emergency, like a node on the rope arriving in your hand at the last moment.
You will only need 40cm of rope as shown.
first second third Stop in place
9
10
DOUBLE ROPECLASSIC USE
basic waiting position Hard Stop
11
Horns
The Upper horn can be used several times (fig 1)
The Lower horn admits double rope (fig 2)
fig 1 fig 2
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PLAQUETTE-like
Hard Stop with one hand
simple ATK system
alternative ATK system
Thin rope use
Italian ascender
ATK rising hand
13
PLAQUETTE-like use
Plaquette-like use + braking carabiner or horns : the rope keep the direct line without twists down the rope.
Chose braking options (fig 1) or (with horns) according to your weight, rope diameter and height of the drop.
With horns Hard stopfig 1
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ONE HAND Hard Stop
first second third
Hard Stop
How to stop with only one hand
15
Simple ATK system
This double rope system is used for self belaying to move a jonction node awayfrom the anchor, to negociate damageable edges or to ease rope rapelling (ropescan ’t cross in the device and remain separated from one another)
CARE : in this case, self belaying will work only on one side : here, only the white rope can be moved separately.
first second third
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Alternative ATK system
In addition to previous system, the self belaying is possible on both ropes alternatively
See compatible carabiners for alternative ATK system in nextpage
21 3 4
6
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5
COMPATIBLE CARABINERS FOR
alternative ATK SYSTEM
For an ideal use of the alternative ATK system, avoidthis type of carabiners: rope wilstuck between the device and the carabiner (fig 1) preventingself belaying possibility
Only circular type carabiners permit efficient use of alternative ATK system
fig 1
18
Thin rope use
A tendancy in the practice is the use of thindiameter ropes, but such exceptionnal technicsmust be used by experimented technicians
1 2 3
19
Chose braking according to weight (fig 4 or 5) and refineadditional braking with the horns
4
5
ITALIAN ascending technic
Ascending with the so called « Italian » way (right)
Reverse to absailing position (left) will only need a pull downwardon the ATK device and a tension on the rope for good braking.
20
ATK rising hand
The shape of the upper horn allow large range of positions for the braking hand : this helps to access delicate anchors whilekeeping a good brake, even with the hand rising above the device, with no risk of a rope jump.
21
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