Repairing ray counterlung

robertfondren · 28th July 2007, 04:31

I recently(today!) aquired a drager ray off of e-bay. Much to my chagrin, the counterlung has a hole (really more of a seam seperation) along the bottom of the inhale side of the counterlung about 1 inch or 2.5 cm. in length. Has anyone succesfully repaired a ray counterlung, or any plastic counterlung, and if so, how? Right now I'm trying Goop.

**Dave1w** · 28th July 2007, 07:28

Hi Robert,
I have a Ray and Dolphin, and I am pretty sure they are the same material. The dolphin lungs I bought came with a coupl eof patches, so I imagine they are repairable.

Try a web search for repairing dolphin lungs, I think I saw a discussion years back on what to use. Alternatively send them back to the guy on Ebay?

Dave

4ster · 28th July 2007, 13:21

Do you have a copy of the Dolphin Tech manual? If not, pm me your email address and I can send you the manual in pdf format. It is 60 pages and about 1.8 MB in size. There may be a Ray Tech manual floating around the Net as well, might be worth a google.

On page 14 of the Dolph manual there is an outline of the repair proceedure. It says to repair black bags with tears less than 20 mm in diameter with either "Aquaseal for Neoprene" or "Aquasure for Neoprene" made by McNett Outdoor. It says not to repair the white bags, they should be replaced.

My used Dolphin had some small leaks that were repaired with Aquaseal after I bought it. The repairs have held up well. Good luck.

Edit: This product was mentioned favorably on Rebreather World earlier this year, I have been meaning to pick some up, my local Recreational Vehicle shop has started carrying the stuff.
TEAR-AID Repair Products

robertfondren · 29th July 2007, 06:06

P.m. sent. Thanks one and all!

montyg · 29th July 2007, 10:06

I have a complete Ray counterlung bag thing which I am willing to part with, if you are interested or if the repair don't work...

rgds
monty

robertfondren · 31st July 2007, 09:16

Well, the aqua-seal didn't hold, but good old cyanoacrylate (super glue) and duct-tape seem to have done the trick. The ray passes pos and neg tests. and perhaps a pool test will inspire the confidence I'd thought I was already PAYING FOR! AARGH !

Monty, I appreciate the offer. May I politely put you on the back burner until I've a clearer picture of that with which I'm dealing? Either PM or respond here. And again thanks to one and all!

oxyhacker · 10th August 2007, 21:05

The problem with this is figuring out just what product Drager is referring to. McNett is not terribly clear with its names, and changes them around from time to time. "Aquaseal/Aquasure for Neoprene" could mean the regular, clear urethane Aquaseal, or Aquaseal Seal Cement (which is not for seals, but that's another story), a black neoprene contact cement. I suspect its the latter, since Aquaseal is not described on the tube or literature as being specifically "for neoprene", while the Seal Cement is.

Certainly that's the one I would pick for gluing on a patch - black neoprene cements are very strong and long-lasting, and stick to almost anything.

Quote: (Originally Posted by 4ster)

On page 14 of the Dolph manual there is an outline of the repair proceedure. It says to repair black bags with tears less than 20 mm in diameter with either "Aquaseal for Neoprene" or "Aquasure for Neoprene" made by McNett Outdoor.
TEAR-AID Repair Products

montyg · 12th August 2007, 07:43

Quote: (Originally Posted by robertfondren)

Monty, I appreciate the offer. May I politely put you on the back burner until I've a clearer picture of that with which I'm dealing? Either PM or respond here. And again thanks to one and all!

No worries at all!

rgds
monty

28th July 2007, 04:31	#1 (permalink)
robertfondren New Member Current Rebreather/s: Ray Other Rebreather/s: Not Bought Yet Ray Join Date: Mar 2006 Location: u.s.a. Posts: 79	Repairing ray counterlung I recently(today!) aquired a drager ray off of e-bay. Much to my chagrin, the counterlung has a hole (really more of a seam seperation) along the bottom of the inhale side of the counterlung about 1 inch or 2.5 cm. in length. Has anyone succesfully repaired a ray counterlung, or any plastic counterlung, and if so, how? Right now I'm trying Goop.
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28th July 2007, 07:28	#2 (permalink)
Dave1w Born Again Diver! Current Rebreather/s: Sport Kiss Dolphin Ray Home Build Other Rebreather/s: Classic Kiss Dolphin Ray Home Build Join Date: Jan 2005 Location: Singapore / UK Posts: 343	Re: Repairing ray counterlung Hi Robert, I have a Ray and Dolphin, and I am pretty sure they are the same material. The dolphin lungs I bought came with a coupl eof patches, so I imagine they are repairable. Try a web search for repairing dolphin lungs, I think I saw a discussion years back on what to use. Alternatively send them back to the guy on Ebay? Dave
(Offline)

28th July 2007, 13:21	#3 (permalink)
4ster Steve Sprague Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Mar 2006 Location: Arlington, Washington Posts: 294	Re: Repairing ray counterlung Do you have a copy of the Dolphin Tech manual? If not, pm me your email address and I can send you the manual in pdf format. It is 60 pages and about 1.8 MB in size. There may be a Ray Tech manual floating around the Net as well, might be worth a google. On page 14 of the Dolph manual there is an outline of the repair proceedure. It says to repair black bags with tears less than 20 mm in diameter with either "Aquaseal for Neoprene" or "Aquasure for Neoprene" made by McNett Outdoor. It says not to repair the white bags, they should be replaced. My used Dolphin had some small leaks that were repaired with Aquaseal after I bought it. The repairs have held up well. Good luck. Edit: This product was mentioned favorably on Rebreather World earlier this year, I have been meaning to pick some up, my local Recreational Vehicle shop has started carrying the stuff. TEAR-AID Repair Products __________________ Steve "My problem is that I have trouble reconciling my gross habits with my net income." Errol Flynn Last edited by 4ster : 28th July 2007 at 13:35. Reason: Tear-Aid web site added
(Online)

29th July 2007, 06:06	#4 (permalink)
robertfondren New Member Current Rebreather/s: Ray Other Rebreather/s: Not Bought Yet Ray Join Date: Mar 2006 Location: u.s.a. Posts: 79	Re: Repairing ray counterlung P.m. sent. Thanks one and all!
(Offline)

29th July 2007, 10:06	#5 (permalink)
montyg Monty Guest Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Feb 2007 Location: Cape Town, South Africa Posts: 229	Re: Repairing ray counterlung I have a complete Ray counterlung bag thing which I am willing to part with, if you are interested or if the repair don't work... rgds monty
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31st July 2007, 09:16	#6 (permalink)
robertfondren New Member Current Rebreather/s: Ray Other Rebreather/s: Not Bought Yet Ray Join Date: Mar 2006 Location: u.s.a. Posts: 79	Re: Repairing ray counterlung Well, the aqua-seal didn't hold, but good old cyanoacrylate (super glue) and duct-tape seem to have done the trick. The ray passes pos and neg tests. and perhaps a pool test will inspire the confidence I'd thought I was already PAYING FOR! AARGH ! Monty, I appreciate the offer. May I politely put you on the back burner until I've a clearer picture of that with which I'm dealing? Either PM or respond here. And again thanks to one and all!
(Offline)

10th August 2007, 21:05	#7 (permalink)
oxyhacker New Member Current Rebreather/s: Dolphin Home Build Other Rebreather/s: Dolphin Home Build Join Date: Feb 2006 Location: NE USA Posts: 14	Re: Repairing ray counterlung The problem with this is figuring out just what product Drager is referring to. McNett is not terribly clear with its names, and changes them around from time to time. "Aquaseal/Aquasure for Neoprene" could mean the regular, clear urethane Aquaseal, or Aquaseal Seal Cement (which is not for seals, but that's another story), a black neoprene contact cement. I suspect its the latter, since Aquaseal is not described on the tube or literature as being specifically "for neoprene", while the Seal Cement is. Certainly that's the one I would pick for gluing on a patch - black neoprene cements are very strong and long-lasting, and stick to almost anything. Quote: (Originally Posted by 4ster) On page 14 of the Dolph manual there is an outline of the repair proceedure. It says to repair black bags with tears less than 20 mm in diameter with either "Aquaseal for Neoprene" or "Aquasure for Neoprene" made by McNett Outdoor. TEAR-AID Repair Products
(Offline)

12th August 2007, 07:43	#8 (permalink)
montyg Monty Guest Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Feb 2007 Location: Cape Town, South Africa Posts: 229	Re: Repairing ray counterlung Quote: (Originally Posted by robertfondren) Monty, I appreciate the offer. May I politely put you on the back burner until I've a clearer picture of that with which I'm dealing? Either PM or respond here. And again thanks to one and all! No worries at all! rgds monty
(Offline)

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