Lungs for inspo

[erikradstrom]

Before I started diving CCR I liked my chest to be clean and the D-rings easy to get.
I dived my first year with the original lungs and found some good features on them but I never got used to them sitting over the D-rings.
People told me to turn them backwards and get a MAV but that was not the solution i wanted. One of the features I liked was the inflators in the front.
If I turned them around they would be gone and I would have to ad two hoses to get a MAV.

At this time Golem Gear came with their TOS lungs and I contacted them and asked if they could make a set for the original inspo T-pieces. The ADV is way better than the one they used, so thats why I didn´t want to have the whole set.
They couldn´t help me so I started making my own only by using the original bladders from APD and making a new outer bag.
This is how I did:

I move the t-pieces up and little past the center of the bladder. The hole in the back was fixed by taking the circle that was cut out from the new hole in front and than taped down with Tear-Aid. It is military approved for permanent repairs so it is good enough for me

I have been using them for little over a year now and they have been down to 85m, I have flooded them, tested them in many conditions and they work fine.

 

[mikel-deko]

Nice set up.

I've been diving my inspi with back/side couterlungs now from three years or so. Down to 137 mtrs. Also without problems.

But, using a MAV (three ways) same as rEvo-rebreather, i just put one new hose.

Thanks anyway for sharing your good impruvement.

Best

Mikel

 

[marekm]

The hole in the back was fixed by taking the circle that was cut out from the new hole in front and than taped down with Tear-Aid. It is military approved for permanent repairs so it is good enough for me

I could come into this thread and go on about how using 'sticky tape' to patch up holes in counterlungs has no place on this forum, just as you did in my thread. But instead I'm just going to ask why you opted not to use PU glue such as Aquaseal when working with PU sheet?

 

[hillbilly]

Erikradstrom,

Thanks for sharing! Here is the link to tear aid. TEAR-AID Repair Products

I have used PU glue on Bi-Laminate drysuits with mixed results. Pealing away over time.

I'll be bringing some of that tear aid in as it would be a good in field repair for suits and counter lungs.

Again, great info!

 

[Bythesea]

So, how much to make me a set?

 

[Philippe GERIN]

I have flooded them, tested them in many conditions and they work fine.

I cannot see the OPV in the last picture. Did you remove it or move it further down the back. How's the loop recovery with this set up?

Best
Philippe

 

[erikradstrom]

I cannot see the OPV in the last picture. Did you remove it or move it further down the back. How's the loop recovery with this set up?

Best
Philippe

Sorry, the pictures was taken in the wrong order. I put the OPV on after I took this picture. I had a try dive before I put it on.

I have flooded them once, forgott the mouthpiece open and didn´t notice it until I was down under. I just tipped to the right side and pushed it out the OPV.

 

[erikradstrom]

I could come into this thread and go on about how using 'sticky tape' to patch up holes in counterlungs has no place on this forum, just as you did in my thread. But instead I'm just going to ask why you opted not to use PU glue such as Aquaseal when working with PU sheet?

Why use Aquaseal when I have tear-aid that is aproved as a permanent repair by the military? I don´t see any point.

Tear-Aid is more than a sticky tape..... and comparing that with not maintaining gear is just ........

 

[marekm]

Why use Aquaseal when I have tear-aid that is aproved as a permanent repair by the military? I don´t see any point.

Tear-Aid is more than a sticky tape..... and comparing that with not maintaining gear is just ........

A permanent repair for inflatable boats, not rebreather counterlungs. Find me a single navy that will put Tear Aid onto damaged rebreather counterlungs and consider it repaired for good (and not a temporary field repair).

Also, why not give the Tear Aid people a call and ask them how they feel about using Tear Aid to modify rebreather counterlungs. I bet they won't want to have anything to do with you.

But you have your beliefs, and will stick to them no matter what.

 

[hillbilly]

A permanent repair for inflatable boats, not rebreather counterlungs. Find me a single navy that will put Tear Aid onto damaged rebreather counterlungs and consider it repaired for good (and not a temporary field repair).

Also, why not give the Tear Aid people a call and ask them how they feel about using Tear Aid to modify rebreather counterlungs. I bet they won't want to have anything to do with you.

But you have your beliefs, and will stick to them no matter what.

Please tell us which navy uses hot glue and plumbing parts on their RB? :cuckoo:

 

[marekm]

Please tell us which navy uses hot glue and plumbing parts on their RB? :cuckoo:

You already know that the US Navy uses the Meg rebreather, and the Meg uses hot glue on some parts.

Canadian Navy uses unplated off the shelf gas plumbing parts on their CUMA rebreather. Proof pictured below:

As for your example of toluene based PU glue peeling off PU sheet, that is probably because you did not clean the surface properly, or don't have access to AR grade solvents to do the job properly. The key to a good bond when gluing materials is not the strength of the glue, but the preparation of the surface. To put it another way: even the strongest glue in the world can't stick two blocks of butter together.

 

[hillbilly]

fftopic:

Where do they use the hot glue on the meg? I own one and where it is, is not on any critical points. They don't use it to glue the hoses onto the fittings. The only glue or similar substance I see in it is placed on the electrical lines to keep them in position (Out of the way) where the battery compartments and electronics are screwed down. Apecs 2.01 - 2007 model.

As for the Canadian navy (Who I served for) many moons ago, used and uses all kinds of crap. They have full time guys to polish the brass fittings so they look nice and shiny. I use to polish brass in my day and now I use chrome plated brass or stainless steel fittings, either scuba or swagelok.

So the story here is why did you bash the guy? His idea is pretty darn good. You didn't like what he said in another thread to you, so you come here and throw stones!

Then give me a lesson on using aquaseal! I guess I am an idiot, we are all idiots except you! Wow! You do have some issues!

 

[marekm]

He bashes my idea: and that's fine by you.

I bash his idea: then that isn't fine by you.

You guys can dish out criticism, but have trouble accepting it. Somewhat of a double standard don't you think?

PS: If you are serious about a guide to gluing with PU, I'll write up a guide in a new thread.

 

[erikradstrom]

A permanent repair for inflatable boats, not rebreather counterlungs. Find me a single navy that will put Tear Aid onto damaged rebreather counterlungs and consider it repaired for good (and not a temporary field repair).

Also, why not give the Tear Aid people a call and ask them how they feel about using Tear Aid to modify rebreather counterlungs. I bet they won't want to have anything to do with you.

But you have your beliefs, and will stick to them no matter what.

Why would it be worse to have it on a CL if it is so good that it will work as a permanent repair on a RIB or a kite? It even states bladder repair on their site.

In a CL you will never get that preassure on the area that is repaired as on a RIB because the outer cover is smaller than the inner blader.
I don´t know your background marekm but if you are all knowing as you write you should know the innerbladder in a CL is less exposed then any of the oter products it works as a permanent repair for.

Im confident, it has been on there for over a year now and it looks like I put it on yesterday.

 

[Clare]

PS: If you are serious about a guide to gluing with PU, I'll write up a guide in a new thread.

Seems a good plan

 

[erikradstrom]

He bashes my idea: and that's fine by you.

I bash his idea: then that isn't fine by you.

You guys can dish out criticism, but have trouble accepting it. Somewhat of a double standard don't you think?

PS: If you are serious about a guide to gluing with PU, I'll write up a guide in a new thread.

I have never bashed your idea! I argued about your idea and I didn´t think your statement about not maintaining gear was dangerous and doesn´t belong on a forum.

But I hope we can leave it at this now and stop acting like children, following eachother in threads just to get even.

 

[marekm]

...I didn´t think your statement about not maintaining gear was dangerous and doesn´t belong on a forum.

This quote from you shows otherwise:

"Attitudes like the one you have, not needing to maintan your gear will get people killed and does not belong as a serious post here."

But as you said you want to end this pointless back and forth, so let's do that instead. Reliability engineering is complex subject on which I'll start another and do a short guide to try to clarify some basics of it, using the bullnose DIN fitting for transfilling helium as an example.

 

[davydiver]

Hi Eric
Nice work with the lungs Im just working on a similar design, just wondered what clearance you have between the backplate and box for the lungs to expand.

 

[Dave Sutton]

Tut Tut...

Might I cordially invite the GENTLEMEN discussing the various ways of attaching "item a" to "item b" to maintan civility and politeness at all times?

Pretty Please? The bunch of you are some of the BEST and SMARTEST and MOST VALUABLE guys here. Treat each other as peers, please? I see each with his own views and experiences. Promote your ideas, defend them if you choose (after all, what is debate?), but please...


Back to our regularly scheduled programme now. Carry on.



(and reading thru... all of the parties have points that are well taken.)

Best,


Dave

 

[erikradstrom]

Tut Tut...

Might I cordially invite the GENTLEMEN discussing the various ways of attaching "item a" to "item b" to maintan civility and politeness at all times?

Pretty Please? The bunch of you are some of the BEST and SMARTEST and MOST VALUABLE guys here. Treat each other as peers, please? I see each with his own views and experiences. Promote your ideas, defend them if you choose (after all, what is debate?), but please...


Back to our regularly scheduled programme now. Carry on.



(and reading thru... all of the parties have points that are well taken.)

Best,


Dave

Hehe your only one month to late Dave The discussion ended a long time ago.

I am trying to get a company or person to make the bladders for me from scratch. I haven´t found any one that can do it yet.

Until I do i will continue using the tear aid patch as it works good! Just to point it out if someone don't think about it. The inner bladder will never be under any high pressure as it is bigger than the outer cover. It is the outer cover that will get stressed during over pressure test or some other reason.
For the same reason the patch will never be under any stress.