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ORIGINAL: Guilty1974

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ORIGINAL: sadomasokisti
In my suspension play I try to use a knot (kind of quick release hitch) in which I can release by just pulling the end of the rope and then lower the victim safely to the floor.  I secure the quick release loop of the hitch with the loose end of the same rope.

That's a reasonably safe way to use a quick release hitch.

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ORIGINAL: SNoB

Well, my plan has always been, lower them with my hoist, then cut once they are on the floor.  Its never had to happen, and I hope it never will.

But using a hoist (either up or down) creates highly unpredictable forces on a suspended body. So that method too has it's own risks. Besides, most japanese style riggers don't use hoists anyway.

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ORIGINAL: DS4DUMMIES

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ORIGINAL: Leatherist

I never hang someone from wrist for more than fifteen minutes-and only if they have no medical issues with the upper body. Padded cuffs are good if you have them. Longer should probably involve a harness, with some sort of crotch strapping to support the torso.

No...no...no...no crotch strapping for supporting weight. VERY dangerous...

"Harness-Induced Death

Wide ranges of situations require safety harnesses of various types. Workers requiring fall protection, workers entering many confined spaces, mountain climbers, deer hunters in elevated stands, and cave explorers all try to protect themselves through the use of safety harnesses, belts, and seats. What is little known however, is that these harnesses can also kill. Harnesses can become deadly whenever a worker is suspended for duration over five minutes in an upright posture, with the legs relaxed straight beneath the body. This can occur in many different situations in industry. A carpenter working alone is caught in mid-fall by his safety harness, only to die 15 minutes later from suspension trauma. An electrical worker is lowered into a shaft after testing for toxic gases. He is lowered on a cable and is positioned at the right level to repair a junction box. After five minutes he is unconscious--but his buddies tending the line don't realize it, and 15 minutes later a dead body is hauled out. The cause of this problem is called "suspension trauma." Fall protection researchers have recognized this phenomenon for decades. "

http://www.cdc.gov/eLCOSH/docs/d0500/d000568/d000568.html

I do not let my crew members use harnesses that involve the crotch as the major part of the suspension point, due to the phenomenon described in the link above.

Suspension of any sort for prolonged periods is iffy and should only be done with proper planning and equipment, and even then for short durations.

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ORIGINAL: SNoB

It should be obvious why slip knotts arent a good idea.

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ORIGINAL: Lynnxz

I have no doubts about the gear being used, we are using a massive winch that is normally used for tossing steel beams around, so tthats no problem either. My concern was just about my shoulders, but my friend and I have just welded a short suspension bar, that should have my hands directly over my shoulders, instead of together over my head. ^_^

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ORIGINAL: ImpGrrl

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ORIGINAL: DS4DUMMIES

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ORIGINAL: Leatherist

I never hang someone from wrist for more than fifteen minutes-and only if they have no medical issues with the upper body. Padded cuffs are good if you have them. Longer should probably involve a harness, with some sort of crotch strapping to support the torso.

No...no...no...no crotch strapping for supporting weight. VERY dangerous...

"Harness-Induced Death

Wide ranges of situations require safety harnesses of various types. Workers requiring fall protection, workers entering many confined spaces, mountain climbers, deer hunters in elevated stands, and cave explorers all try to protect themselves through the use of safety harnesses, belts, and seats. What is little known however, is that these harnesses can also kill. Harnesses can become deadly whenever a worker is suspended for duration over five minutes in an upright posture, with the legs relaxed straight beneath the body. This can occur in many different situations in industry. A carpenter working alone is caught in mid-fall by his safety harness, only to die 15 minutes later from suspension trauma. An electrical worker is lowered into a shaft after testing for toxic gases. He is lowered on a cable and is positioned at the right level to repair a junction box. After five minutes he is unconscious--but his buddies tending the line don't realize it, and 15 minutes later a dead body is hauled out. The cause of this problem is called "suspension trauma." Fall protection researchers have recognized this phenomenon for decades. "

http://www.cdc.gov/eLCOSH/docs/d0500/d000568/d000568.html

I do not let my crew members use harnesses that involve the crotch as the major part of the suspension point, due to the phenomenon described in the link above.

Suspension of any sort for prolonged periods is iffy and should only be done with proper planning and equipment, and even then for short durations.

"Harness hang syndrome" is caused by blood pooling and stagnating in the legs, collecting toxins...and then returning to the heart/brain quickly.  Hanging from a crotch-based suspension in and of itself isn't dangerous, as long as there's adequate circulation within the position, or adequate circulation is created by the bottom moving their legs around often, and when they are returned to the ground, keeping the legs well below the heart to give the older blood more time to dilute as it reaches the heart.

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ORIGINAL: SNoB
Its a rope hoist with 4 pulley blocks, it creates VERY predicatble forces, I think the math is a 7 to 1 ratio, so 7 feet of rope to lower the ring 1 foot. 

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And the "most japanese style riggers" comment isnt true, the ones who have 95 pound bondage bottoms dont use hoists.

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ORIGINAL: ImpGrrl

"Harness hang syndrome" is caused by blood pooling and stagnating in the legs, collecting toxins...and then returning to the heart/brain quickly.  Hanging from a crotch-based suspension in and of itself isn't dangerous, as long as there's adequate circulation within the position, or adequate circulation is created by the bottom moving their legs around often, and when they are returned to the ground, keeping the legs well below the heart to give the older blood more time to dilute as it reaches the heart.

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ORIGINAL: apiercedkitty

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ORIGINAL: ImpGrrl

"Harness hang syndrome" is caused by blood pooling and stagnating in the legs, collecting toxins...and then returning to the heart/brain quickly.  Hanging from a crotch-based suspension in and of itself isn't dangerous, as long as there's adequate circulation within the position, or adequate circulation is created by the bottom moving their legs around often, and when they are returned to the ground, keeping the legs well below the heart to give the older blood more time to dilute as it reaches the heart.

Ok, i have to jump in here. It's NOT caused by "collecting toxins." And the blood doesn't go from the legs to the brain. It's caused by a lack of blood returning to the right side of the heart (blood pooling in the legs). There is no way to "dilute" the "old blood" coming out of the legs before it reaches the heart.
*stepping off my nursing soap-box*