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Post by nikeajax on Dec 1, 2019 16:24:19 GMT -8
John, I was jus' thinkin': isn't it odd that they'd do an improved duckbill when they weren't worried about exhalation effort in ANY single hose regulator at the time? What the heck man! Is this why so many people insisted on using a DH for so many years? JB
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Post by SeaRat on Dec 1, 2019 17:50:59 GMT -8
JB,
I don't think the U.S. Navy approved any single hose regulator until at least the second generation Calypso came around with the improved exhaust, maybe the third generation Calypso. I know that the Calypso regs the USAF bought for us in Pararescue were not approved by the Navy, and that was in the late 1960s. So people held out until later (some did) for the better single hose regulators.
I do know that Healthways was very concerned about water leaking into their single hose regulators, and hence the double mushroom exhaust, which ignored the increased breathing resistance in favor of a dry regulator.
I know that Healthways wasn't too concerned with exhalation resistance until quite late for single hose regulators, and their double hose regs had restricted intake and exhalation mushrooms in the mouthpiece too for the Scuba Delux and Gold Label regs. That was probably because of the USD patents, and perhaps to lessen the water in the mouthpiece that needed to be cleared. That is why the Hope-Page mouthpiece that Mark has on his original Scuba was so good; it had large inhalation and exhalation non-returns. I have a USD hose/mouthpiece on one of my Healthways Gold Label regs, and a Hope-Page on my hybrid Healthways Scuba regulator.
John
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Post by nikeajax on Dec 1, 2019 18:07:29 GMT -8
At some point the USN was using Divairs... and what mouthpiece did they come with JB
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Post by vance on Dec 1, 2019 20:03:03 GMT -8
That one came with this: But the later ones came with the Hope Page.
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Post by SeaRat on Dec 1, 2019 20:10:08 GMT -8
Well, I believe the Divair breathed better than the DA Aqualung (Braxton). The Navy Tried almost ever piece of dive gear out there, if only to test it and see whether it could be put n their list for procurement.
John
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Post by vance on Dec 1, 2019 20:11:33 GMT -8
It's interesting that they show the diver reaching back to turn on the valve/turn the reserve valve/whatever, but if the reg was in the proper position, only a contortionist could operate them.
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Post by tomcatpc on Dec 10, 2019 21:11:00 GMT -8
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Post by vance on Dec 11, 2019 9:06:13 GMT -8
I am now convinced that the H-P did not have a clamp on their bite piece.
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Post by tomcatpc on Dec 11, 2019 10:36:17 GMT -8
I have that impression as well. The effort to get the mouthpiece on there was substantial. The mouthpiece is not going anywhere! But having a clamp is not bad to have. Mark
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Post by SeaRat on Feb 15, 2020 13:57:48 GMT -8
Okay, JB, I've been awaiting a good time to sping this one on you and the rest of the gang. I have a book, titled: Aquatics Handbook M. Alexander Gabrielsen, Betty Spears and B.W. Babrielsen Prentice-Hall, Inc. Englewood Cliffs, N.J., 1960 In it there are two chapters, one titled "Skin Diving" and the other, "Scuba Diving." In the scuba diving chapter, they use Healthways scuba for their illustrations of equipment. They show the "Scubair self-contained underwater breathing apparatus," and the following figures featuring the second generation Scuba regulator for double hose regulators. Healthways Scuba 001 by John Ratliff, on Flickr My question to all of you is, has anyone seen this type of mouthpiece on a Healthways Scuba regulator? It is post-Hope-Page, but pre- the Healthways Scuba rubber mouthpiece. Anyone seen one of these? John
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Post by vance on Feb 16, 2020 10:37:22 GMT -8
I have never seen one. Is it metal? Also, the Deluxe sticker isn't on either of those regs.
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Post by nikeajax on Feb 16, 2020 11:03:32 GMT -8
To the best of my knowledge, no. HW was the only catalog I've ever seen that put prototype gear in them. The funny black rubber MP with the tiny wagon wheels is what they produced... Just as they had an image of the Scubamaster DH, they also had the Scubair +B 1666: As a warning: THIS REGULATOR NEVER EXISTED! I recreated it in Adobe Photoshop!!!!!
JB
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Post by crabbyjim on Feb 17, 2020 6:36:21 GMT -8
So, is this "fake news"?
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Post by Seahuntjerry on Feb 26, 2020 10:50:34 GMT -8
way cool mouthpiece pictures
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Post by vance on Feb 26, 2020 15:12:45 GMT -8
That mp looks like it's diameter is so small, it had to suck. No, YOU had to suck, hard!
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