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Krok

Version A Version B
Version A Version B
 
Version C Sport
Version C Sport

Overview


Version A
(#1595/1596)

Left, Front Left, Rear Left, Open for Rigging
Left, Front Left, Rear Left, Open for Rigging
 
Right, Front Right, Rear Right, Open for Rigging
Right, Front Right, Rear Right, Open for Rigging

Technical Details

Cam faceI acquired my Version A from Gear4Rocks in 2012. Gear4Rocks is the same company as Krok, the only difference is that the Krok trademark sells gear only inside the Ukraine, and the Gear4Rocks trademark was created to spread Ukrainian gear around the world.

Version A is 107 mm. tall, 77 mm. wide, 31 mm. thick, and weighs 160 g. bare and 190 g. including the harness.

The ascender consists of a stamped, painted aluminum shell, a cam assembly, and a set of straps and buckles. The shell consists of two 3 mm. steel pieces welded together. The front piece is bent to form rope and cam channels, and the rear is flat with slots for the web harness. The rope channel is 15 mm. wide, and is 51 mm. from the cam pivot. The cam is spring-loaded and has a (3)(2^3.H)^2(2.2.3.2) tooth pattern. The cam radius increases from 36 to 57 mm. over an angle of 43°, giving a 31° cam angle. A spring-loaded safety on the base of the cam blocks cam opening unless swung out of the way. When the cam is open, the safety may be released to catch the shell, holding the cam open. Two pins on the safety facilitate thumbing the cam.

The front is printed with the Krok logo, a book-with-an-"i" icon, and "2kN." The right one is also printed with 0421 N 030." A tag on the right harness has the Krok logo and "™" on one side and "www.krok.biz.ua" on the other.

Comments

The webbing plate on the Krok makes this ascender taller than most comparable foot ascenders. The increased size has one benefit, namely, it helps keep the ascender from turning against the foot.

The cam teeth are not as sharp as the teeth on some other ascenders. This may affect their performance on hard-lay ropes, especially if the ropes are mud-caked.


Version B
(#1944)

Left, Front Left, Rear
Left, Front Left, Rear
 
Right, Front Right, Rear
Right, Front Right, Rear

Technical Details

Cam faceI acquired my Krok, Version B from Gear4Rocks in 2013.

Version B is 56 mm. tall, 82 mm. wide, 31 mm. thick, and weighs 160 g. bare and 200 g. including the harness.

The ascender consists of a stamped, painted aluminum shell, a cam assembly, and a set of straps and buckles. The shell consists of two 3 mm. steel pieces welded together. The front piece is bent to form rope and cam channels, and the rear is flat with slots for the web harness. There is some lightweight white plastic foam glued to the rear of the ascender. The rope channel is 15 mm. wide, and is 52 mm. from the cam pivot. The cam is spring-loaded and has a (3)(2^3.H)^2(2.2.3.2) tooth pattern. The cam radius increases from 35 to 57 mm. over an angle of 42°, giving a 33° cam angle. There is no cam safety. A pin on the side of the cam facilitates thumbing the cam.

The front of the shell is stamped with the Krok logo, a book-with-an-"i" icon, and "10 12." A tag on the harness has the Krok logo and a book-with-an-"i" icon.

Comments

Some people like a cam safety, and some people have technique that does not need one. This ascender is better suited to the latter group.

The cams on all three versions on this page have similar castings. The differences in dimensions between my descriptions are within measurement uncertainty of each other.

I doubt that the foam padding would last very long, so I wonder why Krok bothered to include it.


Version C
(#1945)

Left, Front Left, Rear Left, Open for Rigging
Left, Front Left, Rear Left, Open for Rigging
 
Right, Front Right, Rear Right, Open for Rigging
Right, Front Right, Rear Right, Open for Rigging

Technical Details

Cam faceI acquired Version C from Gear4Rocks in 2013.

Version C is 51 mm. tall, 61 mm. wide, 25 mm. thick, and weighs 120 g.

The ascender consists of a stamped, painted aluminum shell, a cam assembly, and a set of straps and buckles. The shell is stamped from a single piece of 3 mm. aluminum alloy. Slots punched in the shell serve as attachment points for the webbing. There are two 12.1 mm. holes that reduce the weight of the ascender slightly. The rope channel is 15 mm. wide, and is 47 mm. from the cam pivot. The cam is spring-loaded and has a (3)(2^3.H)^2(2.2.3.2) tooth pattern. The cam radius increases from 36 to 57 mm. over an angle of 41°, giving a 33° cam angle. A spring-loaded safety on the base of the cam blocks cam opening unless swung out of the way. When the cam is open, the safety may be released to catch the shell, holding the cam open. A pin on the side of the cam facilitates thumbing the cam.

The front of the shell is stamped with the Krok logo, a book-with-an-"i" icon, and "13 12" (on the left ascender, "8 13" on the right). A tag on the harness has the Krok logo and a book-with-an-"i" icon.

Comments

The 12 mm. holes in the shell do not appear to be useful as carabiner attachment points.


Sport
(Спорт)
(3604_14.71 L, 3604_14.70 R)
(#3404/3405)

Left, Front Left, Rear
Left, Front Left, Rear
 
Right, Front Right, Rear
Right, Front Right, Rear

Technical Details

Cam faceI acquired my Krok Sport (Спорт) from Krok in 2021.

The Krok Sport is 51 mm. tall, 61 mm. wide, 25 mm. thick, and weighs 149 g. including the harness. I cannot weigh the bare ascender without cutting the harness, but I estimate that it weighs about 120 g.

The ascender consists of a stamped, painted aluminum shell, a cam assembly, and a set of straps and buckles. The shell is stamped from a single piece of 4 mm. aluminum alloy. Slots punched in the shell serve as attachment points for the webbing. There are two 8 mm. holes that reduce the weight of the ascender slightly. The rope channel is 15 mm. wide, and is 46 mm. from the cam pivot. The cam is spring-loaded and has a (3)(2^3.H)^2(2.2.3.2) tooth pattern. The cam radius increases from 36 to 57 mm. over an angle of 41°, giving a 33° cam angle.

The front of left-foot ascender shell is printed with ’Пантин “СПОРТ” дпя левой ноги’ (Pantin "SPORT" for the left leg), "1901.2114," the Krok logo, a book-with-an-"i" icon, and a hollow up-pointing arrow. The right ascender has ’Пантин “СПОРТ” дпя правой ноги’ (Pantin "SPORT" for the right leg), "1901.2103," the Krok logo, a book-with-an-"i" icon, and a hollow up-pointing arrow.

Comments

The cam metal has changed. I could not find out what it was from Krok’s web site (they describe it as high-carbon hardened steel, but this describes the older cam). It may be stainless steel since it is nonmagnetic and seems to be too hard to be aluminum. The castings are crude, with a fair amount of porosity.