Like this?
That's the one I consider way too permanent . . .
DIY Bungied Second - please post a pic
- Thread starter rhwestfall
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That's the one I consider way too permanent . . .
OK, I just grabbed my reg and brought it upstairs to confirm I could, in fact, pull one side off with the knot intact -- I can (as I have done before). It really does look like the one Andy has just posted but perhaps it is because I use a "low quality" zip tie and make sure it is a little loose -- taut but not tight.
Here is a picture of my 2nd stage:
Does it come off easily? No. Does it come off with a sharp pull? Yes. If one side is pulled out will it then be free of my neck? Yes.
So please tell me, what's the problem?
Here is a picture of my 2nd stage:
Does it come off easily? No. Does it come off with a sharp pull? Yes. If one side is pulled out will it then be free of my neck? Yes.
So please tell me, what's the problem?
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Blue Sparkle
Contributor
Thanks for the additional photo(s). That's how I was picturing it, but I wasn't totally confident I had it right. Peter, it sounds as though the blue zip-tie in your photo is probably a tad looser than the one in DevonDiver's example photo looks to be (?).
Thanks again,
Blue Sparkle
Thanks again,
Blue Sparkle
halocline
Contributor
I used to use the fisherman's knots, but I found that the knots didn't hold well when tied in bungie, or maybe I wasn't pulling them tight enough....anyhow, using small zip ties to form the small loop that fits around the mouthpiece has worked very well for me. I also want to be able to pull the reg off the necklace (or watch while some OOA diver does it for me) in the rare case that it becomes necessary, like doffing my gear and forgetting that the alternate is still around my neck....hmmm, I wonder how I came up with that TOTALLY HYPOTHETICAL scenario.....
DevonDiver
N/A
Peter, that really depends upon the conditions that you may find yourself in. Get the bungee snagged in a tight restriction, where you have limited mobility and access... and it could be sufficient to ensure you can't free it. As I've alluded to, there have been events which caused me to adopt my current attitude towards a detachable loop bungee. Yes... it's splitting hairs... but isn't that what we do at a technical level to ensure utmost safety?
dumpsterDiver
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I've never had any technical training, but this discussion is pretty interesting. My common sense tells me that it is stupid as hell to use one crappy zip tie to secure both the mouth piece and the lanyard. I've invented many of my own configurations, even some permanent ones, but they were secured with independent means, not the same zip tie.
Right now my primary necklace is a loop cut from a truck inner tube with a knot in the back to make it the right length.
I think it is important that the reg pop off the necklace in an emergency. The innertube is cut so it holds securely and pops off when it needs to.
Right now my primary necklace is a loop cut from a truck inner tube with a knot in the back to make it the right length.
I think it is important that the reg pop off the necklace in an emergency. The innertube is cut so it holds securely and pops off when it needs to.
DD -- I guess I just can't imagine diving into a space where I can't get my hand to my chin (where my bungied reg is). As long as I can get my hand on my reg I can pull it free. How is that different from your system?
dumpsterDiver
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Mine pops off with a known, precisely calibrated force, while yours pops off when???
Yours is more complicated than mine, but at least you don't appear to be using the same zip tie to secure the mouthpiece and the bungi..
i figured mine was DIR, Black, simple, no moving parts....
DevonDiver
N/A
Peter, I'm probably nitpicking here, because your solution does compromise towards it being detachable - but really I'm thinking worst case scenario. As you state - it requires a "sharp tug" to generate sufficient force to detach the reg from the bungee. Without having tried your individual set-up, my assumption is that a "sharp tug" requires greater freedom of mobility and range of motion than the equivalent motion required to pull the mouthpiece out of a simple loop.
Another important factor, perhaps more so, is the choice of bungee. Given that an entanglement of the bungee may necessitate cutting and that the bungee is co-located with the air hose, it's important to ensure that any cutting operation presents the most minimal risk of accidental damage to the hose. Z-knife designs are optimum for this - but the bungee diameter needs to be sufficiently thin to ensure that the cutter will work efficiently. Some designs of cutter may not be optimum for cutting thick diameter bungee, others are. I like those with a smaller diameter - good for line, bungee and webbing, but not sufficiently sized to swallow/cut through critical hoses or body parts.
This steps forwards into issues I have with pre-manufactured bungee necklaces - i.e. 'Mantas' etc. These are very hard to differentiate by touch from reg hoses, especially under pressure. One step closer to a game-ending human error if under sufficient mental pressure.
Another important factor, perhaps more so, is the choice of bungee. Given that an entanglement of the bungee may necessitate cutting and that the bungee is co-located with the air hose, it's important to ensure that any cutting operation presents the most minimal risk of accidental damage to the hose. Z-knife designs are optimum for this - but the bungee diameter needs to be sufficiently thin to ensure that the cutter will work efficiently. Some designs of cutter may not be optimum for cutting thick diameter bungee, others are. I like those with a smaller diameter - good for line, bungee and webbing, but not sufficiently sized to swallow/cut through critical hoses or body parts.
This steps forwards into issues I have with pre-manufactured bungee necklaces - i.e. 'Mantas' etc. These are very hard to differentiate by touch from reg hoses, especially under pressure. One step closer to a game-ending human error if under sufficient mental pressure.
Griffo
Contributor
I actually use two different systems - one set uses the DiveRite bungee necklace as seen here ->
Regulator Accessories - Dive Gear Express
The other set uses the bungee tied under the mouthpiece zip tie that others have shown.
I read mention of a diver death due to a non-detachable bungee earlier in the thread. Does anyone have details? I'd always assumed that the bungee was not higher risk than any other entanglement. My missus would never use a bungee that could detach due to an incident where her primary was ripped out and the secondary was unreachable. I'm of the same belief currently but am interested in the above story.
Regulator Accessories - Dive Gear Express
The other set uses the bungee tied under the mouthpiece zip tie that others have shown.
I read mention of a diver death due to a non-detachable bungee earlier in the thread. Does anyone have details? I'd always assumed that the bungee was not higher risk than any other entanglement. My missus would never use a bungee that could detach due to an incident where her primary was ripped out and the secondary was unreachable. I'm of the same belief currently but am interested in the above story.
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