Redundant Inflation???

TomR · August 24th, 2006, 01:24 AM

Hey Everybody,

Is the DIR protocol that you must use a separate bottle (eg. Argon) to fill a drysuit if you are to have no ditchable weight? I see a scenario where in a single tank a first stage could stop delivering air and you'd be able to fill neither the suit nor the wing and be out of air and not be able to ditch weight (if it's all non ditchable). At least with an argon bottle you could fill the drysuit to help get to or stay on the surface.

Please let me know what the protocol is if you know it. Thanks,
Tom

MonkSeal · August 24th, 2006, 01:41 AM

Quote: (Originally Posted by TomR)

Hey Everybody,

Is the DIR protocol that you must use a separate bottle (eg. Argon) to fill a drysuit if you are to have no ditchable weight? I see a scenario where in a single tank a first stage could stop delivering air and you'd be able to fill neither the suit nor the wing and be out of air and not be able to ditch weight (if it's all non ditchable). At least with an argon bottle you could fill the drysuit to help get to or stay on the surface.

Please let me know what the protocol is if you know it. Thanks,
Tom

Argon tank is needed if you dive with helium based mix. Getting to surface is
achievable by diving balanced rig. Once on surface you can oraly inflate wing to add bouyancy.

Mark Chase · August 24th, 2006, 08:59 AM

I am asuming your talking about a single tank rig as obviously with a twin set you would have two seporate first stages so this shouldent be an issue.

I would have thaught seporate suit inflation when diving a single rig is a good idea. I have seen plenty of DIR divers diving with Nitrox but still using argon bottles rather than change their rig just for the shalow dive so I am asuming its OK.

I refuse to dive a single on wreck dives and use twin 7's for shalow stuff. I used an argon bottle with this rig during my DIRF and i wasent told it was wrong.

ATB

Mark Chase

lizardland · August 24th, 2006, 10:07 AM

Is it procedure to dive with a single + drysuit with no ditchable weight? I haven't dived a single with drysuit in about ten years but as I recall you'd need a fairly heavy rig to get away without lead.

MonkSeal · August 24th, 2006, 10:15 AM

Quote: (Originally Posted by lizardland)

I haven't dived a single with drysuit in about ten years but as I recall you'd need a fairly heavy rig to get away without lead.

or a very thin insulation

MonkSeal · August 24th, 2006, 10:28 AM

Quote: (Originally Posted by Mark Chase)

I have seen plenty of DIR divers diving with Nitrox but still using argon bottles rather than change their rig just for the shalow dive so I am asuming its OK.

It's Ok and it's more convinient not to detach argon rig from backplate when switching from double to single tank. But the question was if it was necesarry to have separate dry suit inflation due to having no ditchable weight. And the answer is simple: no. If "no ditchable weight" can be achieved with some single tank configuration is other question but balanced rig is the answer for bouyancy loss problems.

BTW in OOG situation after receiving donation you're able to oraly inflate wing (if it's not failed also).

August 24th, 2006, 08:59 AM	#3 (permalink)
Mark Chase(Offline) New Member Join Date: Nov 2005 Location: Kent England Posts: 1,069	I am asuming your talking about a single tank rig as obviously with a twin set you would have two seporate first stages so this shouldent be an issue. I would have thaught seporate suit inflation when diving a single rig is a good idea. I have seen plenty of DIR divers diving with Nitrox but still using argon bottles rather than change their rig just for the shalow dive so I am asuming its OK. I refuse to dive a single on wreck dives and use twin 7's for shalow stuff. I used an argon bottle with this rig during my DIRF and i wasent told it was wrong. ATB Mark Chase __________________ The only DIR Inspiration/Hammer head/KISS/rEvo/JJ diver in the village www.ourturkishvilla.co.uk

August 24th, 2006, 10:07 AM	#4 (permalink)
lizardland(Offline) LCS Join Date: Nov 2005 Location: Evidently Chickentown Posts: 1,004	Is it procedure to dive with a single + drysuit with no ditchable weight? I haven't dived a single with drysuit in about ten years but as I recall you'd need a fairly heavy rig to get away without lead. __________________ Can you imagine drifting along in the sea with your mouth open and a load of f***ing plankton going in? You'd like it, would you? www.westons-cider.co.uk The Lot isn't the only place to dive: http://www.lulu.com/content/613554

August 24th, 2006, 01:24 AM	#1 (permalink)
TomR(Offline) New Member Join Date: Jul 2006 Location: California Posts: 4	Hey Everybody, Is the DIR protocol that you must use a separate bottle (eg. Argon) to fill a drysuit if you are to have no ditchable weight? I see a scenario where in a single tank a first stage could stop delivering air and you'd be able to fill neither the suit nor the wing and be out of air and not be able to ditch weight (if it's all non ditchable). At least with an argon bottle you could fill the drysuit to help get to or stay on the surface. Please let me know what the protocol is if you know it. Thanks, Tom

August 24th, 2006, 01:41 AM	#2 (permalink)
MonkSeal (Online) New Member Join Date: Feb 2006 Location: Zagreb, Croatia Posts: 566	Quote: (Originally Posted by TomR) Hey Everybody, Is the DIR protocol that you must use a separate bottle (eg. Argon) to fill a drysuit if you are to have no ditchable weight? I see a scenario where in a single tank a first stage could stop delivering air and you'd be able to fill neither the suit nor the wing and be out of air and not be able to ditch weight (if it's all non ditchable). At least with an argon bottle you could fill the drysuit to help get to or stay on the surface. Please let me know what the protocol is if you know it. Thanks, Tom Argon tank is needed if you dive with helium based mix. Getting to surface is achievable by diving balanced rig. Once on surface you can oraly inflate wing to add bouyancy.

August 24th, 2006, 10:15 AM	#5 (permalink)
MonkSeal (Online) New Member Join Date: Feb 2006 Location: Zagreb, Croatia Posts: 566	Quote: (Originally Posted by lizardland) I haven't dived a single with drysuit in about ten years but as I recall you'd need a fairly heavy rig to get away without lead. or a very thin insulation

August 24th, 2006, 10:28 AM	#6 (permalink)
MonkSeal (Online) New Member Join Date: Feb 2006 Location: Zagreb, Croatia Posts: 566	Quote: (Originally Posted by Mark Chase) I have seen plenty of DIR divers diving with Nitrox but still using argon bottles rather than change their rig just for the shalow dive so I am asuming its OK. It's Ok and it's more convinient not to detach argon rig from backplate when switching from double to single tank. But the question was if it was necesarry to have separate dry suit inflation due to having no ditchable weight. And the answer is simple: no. If "no ditchable weight" can be achieved with some single tank configuration is other question but balanced rig is the answer for bouyancy loss problems. BTW in OOG situation after receiving donation you're able to oraly inflate wing (if it's not failed also).