Based on the Russian basic ascender design, this versatile piece has a dual-action cam that allows rope to slide dynamically in loads under 3-4 kN at which time it will lock up and act as a brake. It is ideal for use as a fixed line brake while solo top roping, and can also be used as a haul system brake or basic ascender.
The Rocker complies with EN353-2, EN358 and EN795. The compliance of EN795 is as a shock absorbing anchor within a horizontal safety line system.
The Rocker was also dynamically tested for a 200kg weight for rope technicians using it as a back-up safety device in rescue. All tests were carried out with low stretch ropes of 10.5mm to 12.7mm dia. from one manufacturer. Physical conditions (i.e. wet, ice, dry) and ropes of different plaits will give differing results.
The Rocker is marketed by Yates Gear in the US and Troll in the UK.
It can he used in the following ways:
a. Safety fall arrest EN353-2.
b. Work positioning EN358.
c. Horizontal safety line EN795.
d. Rescue safety back up EN353-2.
e. Pulley brake
g. Belay brake
h. Average static load 3,5kN
i. Max dynamic impact 5.9kN
j. Static Strength 15kN 3min
k. Max impact 200kg load 5.7kN