T-pieces and fittings....

Genesis · 25th November 2005, 21:26

Ok, so here's my next challenge, having worked out a few of the other ones...

T-pieces.

Assume OTS lungs, using the MSR bags for the base (nice shape, size, and appropriate capacities available)

These come with a port already in them, but it has a coarse and odd thread, which I haven't been able to match. I assume calling up MSR and asking them questions like this would probably lead to a reaction most closely approximated by

from them....

I've got the DSV and primary hoses, but now I have to figure out "T" pieces. The obvious is a PVC Sch40 "T", but then you have to figure out how to fit it to the lung in a way that you can get it apart for cleaning, but will stay together while in use (for obvious reasons) CL to the scubber can hoses I'm also looking for a good solution for, given that these will need to be custom length - looking at some marine-application hoses for this which should work - the trick is going to be the mix between flexability and toughness.

How are people solving this particular problem (both - the Ts and the existing port in the MSR bags??) Its one of the few I don't have a good solution for yet.

Simon A · 25th November 2005, 21:57

Fabricate something involving the Tpieces and the caps that come with the MSR bags? or failing that put a set of vernier calipers and a thread guage on the thread to work out what it is?

Simon A

Genesis · 26th November 2005, 01:06

Certainly doable - just wondering if there's something obvious that others have worked out (or found!) and that I'm missing

Scuba_Vixen · 26th November 2005, 03:53

Instead of T pieces, have you considered using two elbows?

That way you can have just the right angle coming in and out of the CL.

How about sch. 80 and machine a set of locking lugs similar to a rifle bolt?

Welcome to RBW Karl,

Darlene

Genesis · 26th November 2005, 03:57

That is definitely a possibility... it does probably mean using a larger lung though just to get the space, given that I need room for a dump on one (purge) and ADV on the other - assuming I fit one (my intention was to, but I might not at first)

Not a bad idea... the trick appears to be in the 'lung fitting side to both mount in the lung and provide the fitment - without leaks of course

Scuba_Vixen · 26th November 2005, 05:09

Quote: (Originally Posted by Genesis)

That is definitely a possibility... it does probably mean using a larger lung though just to get the space, given that I need room for a dump on one (purge) and ADV on the other - assuming I fit one (my intention was to, but I might not at first)

Not a bad idea... the trick appears to be in the 'lung fitting side to both mount in the lung and provide the fitment - without leaks of course

If you use a locking lug type setup, you can use a face seal oring like the way the old jet pilots attached the hoses to their flight suit.

Crazyduck · 26th November 2005, 06:17

Buy from whomever- whatever it is you want....

Thats what other people have done. Why re-engineer the devil>?

Why recreated the wheel? I think I know who you got the hoses from- make a call and by the t-assemblies and counterlungs to boot if you need.

Just a though.

Andrew

curator · 4th February 2006, 20:22

Have a look at Tecme in Germany, they are selling T pieces based on P Port fittings. I've just ordered two and am going to see whats possible with them.

I don't think they have a baffle like the inspiration T (not so good for a water trap), but are easy to connect/disconnect (Proven P port system) and designed to fit ray hoses.

I'm fairly new to this so if anyone has tried these and has any lessons to share I'd appreciated your thoughts.

I'll let you know if I get a good result.

Cheers

Curator

Deep Thought · 4th February 2006, 21:08

Quote: (Originally Posted by Genesis)

Ok, so here's my next challenge, having worked out a few of the other ones...

T-pieces.

Assume OTS lungs, using the MSR bags for the base (nice shape, size, and appropriate capacities available)

These come with a port already in them, but it has a coarse and odd thread, which I haven't been able to match. I assume calling up MSR and asking them questions like this would probably lead to a reaction most closely approximated by

from them....

I've got the DSV and primary hoses, but now I have to figure out "T" pieces. The obvious is a PVC Sch40 "T", but then you have to figure out how to fit it to the lung in a way that you can get it apart for cleaning, but will stay together while in use (for obvious reasons) CL to the scubber can hoses I'm also looking for a good solution for, given that these will need to be custom length - looking at some marine-application hoses for this which should work - the trick is going to be the mix between flexability and toughness.

How are people solving this particular problem (both - the Ts and the existing port in the MSR bags??) Its one of the few I don't have a good solution for yet.

I have a set of MSR bags on my desk with T's that Skipbreather was kind enough to machine for me. Aside from the small batch shop rate (he did it as a favor) I think the T's cost a couple bucks. The bag fitting is the MSR cap that has the center removed (via Jetsam) and the inner stem is the Classic inhale/exhale port that screws into the can. Skipbreather matched the thread and machined it into the T.

The OTS lungs are ready to try out, including the gas add valve and exhaust valve. I'll shoot a pic when I get back to the shop...been out and about.

Deep Thought

divetheworld · 4th February 2006, 23:57

Dont forget to seperate the in and out part of the exhale tee so you can use the lungs as water traps. If you can.

Brent

25th November 2005, 21:26	#1 (permalink)
Genesis Bubbless Box of Death Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Oct 2005 Location: Sunny Florida Posts: 1,453	T-pieces and fittings.... Ok, so here's my next challenge, having worked out a few of the other ones... T-pieces. Assume OTS lungs, using the MSR bags for the base (nice shape, size, and appropriate capacities available) These come with a port already in them, but it has a coarse and odd thread, which I haven't been able to match. I assume calling up MSR and asking them questions like this would probably lead to a reaction most closely approximated by from them.... I've got the DSV and primary hoses, but now I have to figure out "T" pieces. The obvious is a PVC Sch40 "T", but then you have to figure out how to fit it to the lung in a way that you can get it apart for cleaning, but will stay together while in use (for obvious reasons) CL to the scubber can hoses I'm also looking for a good solution for, given that these will need to be custom length - looking at some marine-application hoses for this which should work - the trick is going to be the mix between flexability and toughness. How are people solving this particular problem (both - the Ts and the existing port in the MSR bags??) Its one of the few I don't have a good solution for yet. Last edited by Genesis : 25th November 2005 at 21:30.
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25th November 2005, 21:57	#2 (permalink)
Simon A Escapee from DIY Rebreather's Current Rebreather/s: Inspiration Classic Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Reading, UK Posts: 345	Re: T-pieces and fittings.... Fabricate something involving the Tpieces and the caps that come with the MSR bags? or failing that put a set of vernier calipers and a thread guage on the thread to work out what it is? Simon A
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26th November 2005, 01:06	#3 (permalink)
Genesis Bubbless Box of Death Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Oct 2005 Location: Sunny Florida Posts: 1,453	Re: T-pieces and fittings.... Certainly doable - just wondering if there's something obvious that others have worked out (or found!) and that I'm missing
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26th November 2005, 03:53	#4 (permalink)
Scuba_Vixen e/mCCR Dolphin Pilot Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: May 2005 Location: St. Croix USVI Posts: 557	Re: T-pieces and fittings.... Instead of T pieces, have you considered using two elbows? That way you can have just the right angle coming in and out of the CL. How about sch. 80 and machine a set of locking lugs similar to a rifle bolt? Welcome to RBW Karl, Darlene
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26th November 2005, 03:57	#5 (permalink)
Genesis Bubbless Box of Death Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Oct 2005 Location: Sunny Florida Posts: 1,453	Re: T-pieces and fittings.... That is definitely a possibility... it does probably mean using a larger lung though just to get the space, given that I need room for a dump on one (purge) and ADV on the other - assuming I fit one (my intention was to, but I might not at first) Not a bad idea... the trick appears to be in the 'lung fitting side to both mount in the lung and provide the fitment - without leaks of course
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26th November 2005, 05:09	#6 (permalink)
Scuba_Vixen e/mCCR Dolphin Pilot Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: May 2005 Location: St. Croix USVI Posts: 557	Re: T-pieces and fittings.... Quote: (Originally Posted by Genesis) That is definitely a possibility... it does probably mean using a larger lung though just to get the space, given that I need room for a dump on one (purge) and ADV on the other - assuming I fit one (my intention was to, but I might not at first) Not a bad idea... the trick appears to be in the 'lung fitting side to both mount in the lung and provide the fitment - without leaks of course If you use a locking lug type setup, you can use a face seal oring like the way the old jet pilots attached the hoses to their flight suit.
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26th November 2005, 06:17	#7 (permalink)
Crazyduck Underwater Mechanic Current Rebreather/s: Dolphin Other Rebreather/s: Dolphin Join Date: Mar 2005 Location: TEXAS, Dallas/ Ft.Worth Posts: 720	Re: T-pieces and fittings.... Buy from whomever- whatever it is you want.... Thats what other people have done. Why re-engineer the devil>? Why recreated the wheel? I think I know who you got the hoses from- make a call and by the t-assemblies and counterlungs to boot if you need. Just a though. Andrew
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4th February 2006, 20:22	#8 (permalink)
curator New Member Current Rebreather/s: Inspiration Classic Dolphin Home Build Other Rebreather/s: Dolphin Home Build Join Date: Feb 2006 Location: West Midlands, UK Posts: 66	Re: T-pieces and fittings.... Have a look at Tecme in Germany, they are selling T pieces based on P Port fittings. I've just ordered two and am going to see whats possible with them. I don't think they have a baffle like the inspiration T (not so good for a water trap), but are easy to connect/disconnect (Proven P port system) and designed to fit ray hoses. I'm fairly new to this so if anyone has tried these and has any lessons to share I'd appreciated your thoughts. I'll let you know if I get a good result. Cheers Curator
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4th February 2006, 21:08	#9 (permalink)
Deep Thought RebreatherWorld Sponsor Current Rebreather/s: Inspiration Vision Evolution Megalodon Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Sport Kiss Classic Kiss Optima Join Date: Apr 2005 Location: Great Lakes Posts: 195	Re: T-pieces and fittings.... Quote: (Originally Posted by Genesis) Ok, so here's my next challenge, having worked out a few of the other ones... T-pieces. Assume OTS lungs, using the MSR bags for the base (nice shape, size, and appropriate capacities available) These come with a port already in them, but it has a coarse and odd thread, which I haven't been able to match. I assume calling up MSR and asking them questions like this would probably lead to a reaction most closely approximated by from them.... I've got the DSV and primary hoses, but now I have to figure out "T" pieces. The obvious is a PVC Sch40 "T", but then you have to figure out how to fit it to the lung in a way that you can get it apart for cleaning, but will stay together while in use (for obvious reasons) CL to the scubber can hoses I'm also looking for a good solution for, given that these will need to be custom length - looking at some marine-application hoses for this which should work - the trick is going to be the mix between flexability and toughness. How are people solving this particular problem (both - the Ts and the existing port in the MSR bags??) Its one of the few I don't have a good solution for yet. I have a set of MSR bags on my desk with T's that Skipbreather was kind enough to machine for me. Aside from the small batch shop rate (he did it as a favor) I think the T's cost a couple bucks. The bag fitting is the MSR cap that has the center removed (via Jetsam) and the inner stem is the Classic inhale/exhale port that screws into the can. Skipbreather matched the thread and machined it into the T. The OTS lungs are ready to try out, including the gas add valve and exhaust valve. I'll shoot a pic when I get back to the shop...been out and about. Deep Thought __________________ Creature Of Habits; Mostly Bad www.gudcscuba.com
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4th February 2006, 23:57	#10 (permalink)
divetheworld Dive porn pimp Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Classic Kiss Other CCR Join Date: Mar 2005 Location: Leeds, England Posts: 1,636	Re: T-pieces and fittings.... Dont forget to seperate the in and out part of the exhale tee so you can use the lungs as water traps. If you can. Brent __________________ Attitude and self praise is no reccomendation. Dont try to be a great man, just be a man and let history be the judge of you. *WWW.NARKEDAT90.CO.UK* *http://www.grpservices.com/pursuit/* Supporting Shearwater Research Products in Europe
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