The is one of the following group of similar double-stop bobbins:
Image |
Device |
Upper Bollard |
Lower Bollard |
Connecting Link |
Safety Lever |
Hand Grip |
Hook Safety |
|
Certification |
Allowed Rope Size |
Weight Limit(s) |
Max Drop |
|
 |
Kong Indy |
Aluminum |
Aluminum |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Stamped Stainless Steel |
|
EN341/A,
prEN12841/C |
10-11 mm. (EN341/A)
10-13 mm. (EN12841/C) |
Max. 1.5 kN. |
100 m.
|
|
 |
Camnal Down |
Aluminum |
Aluminum |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Stamped Stainless Steel |
|
EN341 |
10-12 mm. |
Max. 150 kg. |
100 m.
|
 |
SOB |
Aluminum |
Aluminum |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Stamped Stainless Steel |
|
EN341 |
10-12 mm. |
Max. 150 kg. |
100 m.
|
 |
Chinese |
Aluminum |
Aluminum |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Stamped Stainless Steel |
|
EN341 |
10-13 mm. |
Max. 150 kg. |
100 m.
|
|
 |
Vento |
Aluminum |
Aluminum |
Round Bar |
Aluminum Extrusion |
Plastic /w Finger Grooves |
Stamped Stainless Steel |
|
EAC |
10-13 mm. |
Max. 150 kg. |
100 m.
|
|
 |
S.E.Peak SE-218 |
Aluminum |
Forged Aluminum |
Flat Bar |
Forged Aluminum |
Smooth |
Stamped Stainless Steel |
|
EN341/A EN12841/C |
10-13 mm. |
30-150 kg |
200 m.
|
|
 |
SUT |
Aluminum |
Steel |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Stamped Stainless Steel |
|
EN341 |
9-12 mm. |
30-150 kg |
100 m.
|
|
 |
Ito-Rocky |
Aluminum |
Forged Steel |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Plastic |
|
EN341 |
9-12 mm. |
30-150 kg |
100 m.
|
 |
NewDoar |
Aluminum |
Forged Steel |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Plastic |
|
EN341 |
9-12 mm. |
30-150 kg |
100 m.
|
 |
Asol |
Aluminum |
Forged Steel |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Plastic |
|
EN341 |
10-13 mm. |
Max. 150 kg. |
100 m.
|
 |
Z&W |
Aluminum |
Forged Steel |
Flat Bar |
Aluminum Extrusion |
Ribbed Plastic |
Plastic |
|
EN341 |
10-13 mm. |
Max. 150 kg. |
100 m. |
|
These descenders clearly "borrow" the autostop concept from Kong and in particular from the King Indy.
These each have a lever at the top that provides both a release-stop and a panic-stop feature. Unlike the Petzl Stop design, the stop design developed by Kong-Bonaiti and copied on these ascenders has never worked well for me. It simply does not provide enough stopping force to hold me in position, let alone arrest a rapid descent. I've been able to complete rappels on these bobbins without touching the handle, a situation that should not allow me to move.
As for the panic stop feature, squeezing the handle hard enough will slow the descent. Depending on the rope in use, this may occur whn one is tring to hold the handle in the middle position for a normal descent. I've never fully understood why people promote panicing as desirable behavior, and I find double-acting levers designed to address this questionable behavior maddening. You may like them, but if this is because you like to panic, I suggest you fullly dispense with that behaviour first and then move on to single-acting devices.
This autostop design adds unnecessary length and width to the descender. It is too complicated for my taste, with too many
pivoting joints that may fail. I cannot recommend this type of stop (let alone double-stop) feature over the Petzl Stop design.
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