Cassin Twin

Oblique View: Version A, Version B

Rear View: Version A, Version B


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Version A

The Cassin Twin is quite different from a slotted ("Sticht") plate or belay tube, so it is important to read the instructions. While the climber is climbing, the belayer feeds rope through the device until the climber falls. At this time, the ropes will wedge into the V-slots, arresting the fall. To release the ropes, loop the tag ends over the races on the side and pull down.

When rappelling, the tag ends of the ropes are run over the races on top of the device to hold them out of the V slot. If you want to stop, drop the rope off of the races and it will lock into the V slot. Releasing it from this position requires looping the rope back over the races and pulling down hard - you may have to loop the rope around your foot and stand to do this, but usually it will just pop loose.

If you like the Twin but only need to be able to handle a single rope, the Cassin Logic might be what you are looking for.

 


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Version B

Technical Details:

Olivier Peron Caillet donated a Cassin Twin, Version B to my collection in February, 2008.

Version B is similar to Version A except that Version B is anodized and has a 40 mm long, 7.4 mm diameter unfinished aluminum bar attached to the keeper sling.

The underside of Version B is marked with the Cassin logo, "HMS KARABINER," "ROPE UIAA-CE", "ø mm 8-9,", "READ INSTRUCTIONS BEFORE USE," "TWIN," "ITALY," and "01-II." There ae two forged up-pointing arrows on the top side, above the rope slots, and a forged down-pointing arrow on the bottom side, below the races.

Comments:

The bar helps keep the Twin from sliding on the carabiner.


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©2008, Gary D. Storrick