How To Build Your Own Diving Lung

[JamesBon92007]

Wow, manganese tanks! But be too buoyant for practical use.

 

[JamesBon92007]

]

I was kinda surprised to find a "Self Contained Diving Unit" for sale in the back of this issue for $160. They also have a frogman suit, speargun, mask, snorkels, fins...

 

[vintagediver]

Wow, manganese tanks! But be too buoyant for practical use.

Why would they be bouyant?
Manganese is about the same density as moly steel...

 

[DaleC]

"Making an Aqualung" by E.T. Fearon

Detailed instructions on tank, regulator, and pack.

Is there a link (or am I missing something)?

 

[knowone]

Ex aircraft O2 tanks. Vintage Scuba Supply has the convertible reg for sale. ebay seller grandpas_secrets had the plans a bit back.

 

[herman]

I am "Google-Impaired." Whenever I search I don't find the stuff everyone else finds. I really *did* search before asking. Thanks!

I am sorry if that came across wrong, it was ment as a fun poke at you, not an insult.....should have used a smilie...

 

[JamesBon92007]

No worries. Way back when it was Deja I used to be able to find stuff. But seriously, I tried Google, Yahoo, and searched these forums for well over an hour and didn't find it.

 

[JamesBon92007]

Is there a link (or am I missing something)?

There was no link--vintagediver has it on his hard drive and now it's on mine. If you want it I'll be happy to send it to you. My email is my nickname here @gmail.com

 

[JamesBon92007]

Why would they be bouyant?
Manganese is about the same density as moly steel...

I was under the impression that lightweight tanks were too buoyant, especially when nearly empty and that any weight-loss advantage would need to be compensated for by adding more weight on your belt whereas steel and aluminum tanks, as we know them, are generally slightly negative when full and slightly positive when empty. If this is not correct please advise me otherwise. It's quite possible that I forgot something. For example, I remember buying one of my old Calypso regulators but can't remember when I got the other one. Perhaps there are more nitrogen bubbles in one part of my brain than in another :demented:

 

[Sam Miller III]

Ya, and you get to use a back plate too. Shows how far back plates and such go, DIR is just a refindment.

~~~~~~~~~~~~~~~~~~~~~~~~~~
Back Plates were very common in that era..

Commercial Back Plates were introduced by Sea Craft in the early 1960s.

what is new is also old...each generation "discovers a new item...."