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Post by SeaRat on Jun 27, 2023 13:45:51 GMT -8
Okay, JB and others, this will blow your minds. I just found this photo on the Avalon Diving History Exhibit Facebook page. The Scubamaster by Healthways apparently did actually exist!  IMG_0244 by John Ratliff, on Flickr Take a look at the exhaust horn! John |
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Post by nikeajax on Jun 27, 2023 14:04:25 GMT -8
Híjole!  We... we... we need to see more of it, how the (expletive deleted) do we see more  If we can see more, we can probably make one JB |
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Post by vance on Jun 27, 2023 16:00:32 GMT -8
That isn’t the ScubaMaster piston reg we’ve discussed. I’m not at home and writing on my iPad doesn’t work well for me so I’ll have more to say when I return home. But, this is much more like a Trieste sized reg and the exhaust holes are odd for a commercial regulator.
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Post by james1979 on Jun 28, 2023 1:38:29 GMT -8
I'd be curious of it's provenance... There are a few things that raise questions to me (and make me think it's a one off mod like the stuff we do). The exhaust holes on the horn that Phil mentioned, why have a purge button on a DH reg, the lettering on the cover (spacing in particular towards the end).
Like I said, curious!
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Post by nikeajax on Jun 28, 2023 11:34:54 GMT -8
Holy sheep-dip, look closely at what's underneath it...  Which they then imagined would look like...  but actually this...  and finally this...  JB |
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Post by Jim Perdway on Jun 28, 2023 11:37:43 GMT -8
It looks to me like the “M” and the “E” are kinda half-assed. Did they perhaps just cut the scuba star label and shuffle letters and add those two? The R is definitely separated and has moved a bit
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Post by nikeajax on Jun 28, 2023 13:07:01 GMT -8
It looks to me like the “M” and the “E” are kinda half-assed. Most definitely, yes! So much so that that was the first thing I noticed, I couldn't get past it, but eventually, I was able to see all of the ridiculous goodness for what it was. I need to see different views, like if it has a first stage and how exactly is it attached--GRRRR! JB |
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Post by vance on Jun 28, 2023 15:25:21 GMT -8
This enlarged view shows that the label was pieced together, esp. at the e and r end. Also, the "M" is suspect. What did they make that out of?  The holes at the bottom (top?) of the exhaust horn were how many home-made regs dealt with the exhaust, rather than complicating the whole thing by exhausting through the bottom box. The issue of "Where is the first stage?" is a great question, and will almost certainly prove to be that it is remote, rather than attached. The complexity of integrating a first stage into the top box on something like this would be really....well, complex! There's no room to install a second stage as well. Imagine the Trieste first stage and how it is installed in the top box. Unless someone invented something truly unique, this one is fed LP air from a remote first, perhaps in the same vein as the single/double.I love it, and would be very interested to understand more about this modded HW single hoser. I'm curious about how they attached the exhaust horn to the box. It would be awesome to see more photos from different angles. |
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Post by SeaRat on Jun 28, 2023 16:00:17 GMT -8
Here is our dialog on the Avalon Diving History Exhibit Facebook page:
I'm hoping that we can got some other photos of this regulator.
John
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Post by nikeajax on Jun 28, 2023 16:14:11 GMT -8
Phil, very well articulated description! So, if we first look at Phil's image:  There are a few things to notice: firstly, the color of the label is a very early blue-gray and the purge button is a flush surface, not domed like later Scuba Stars, so we can deduct from there that it was originally a tilt-valve, not unlike my Scubair:  So, I have to agree with PY that it's a remote first stage, but then, what is reducing the HP to IP?!?!? Has the exhaust-tee been replaced by a LP-hose to feed the air, coming through the back: this was Dick Anderson's original configuration for the Scuba Star, a centered hose under your chin. If this is the case, and it is an up-stream-valve, perhaps the tilt-valve was curved/bent like the early Sportsways/Waterlung DH's, but then, GRRRRR! Why do we need it to be a DH then... Now I'm even more confused by the whole thing... Where the (expletive deleted) is the reduction happening? JB |
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Post by nikeajax on Jun 28, 2023 16:33:35 GMT -8
Hmmmm? Could this be like that remote Mistral of JYC's? But then... AHHHHHHHHHHH!
JB
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Post by vance on Jun 28, 2023 17:21:07 GMT -8
We need more photos.
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Post by SeaRat on Jun 28, 2023 19:26:14 GMT -8
Okay, here’s my speculation. This is basically a Scubair (original, tilt valve) second stage with an inhalation horn on one side, open to the interior, and an exhalation horn welded on the outside, without it being open to the second stage internally. That explains the holes in the horn. Because the Scubair had an inhalation resistance of about 1.5 inches of water, there was no need for the exhalation horn to be centered on the diaphragm, as it was less than 1.5 inches away from the center of the diaphragm (the holes for the exhalation hose). There may have been a rudimentary duckbill in the horn like is on the original Healthways Scuba double hose regulator. If they were really over-designing this regulator, they then placed an inner tube into the exhalation horn, with an exhalation diaphragm similar to the original Scuba regulator in there. But I don’t think they really needed that in that the holes are within the range of inhalation resistance and probably would not leak due to water pressure.
And yes, we need more photos.
John
PS, the “M” on the “ScubaMaster” label looks hand-painted.
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We... we... we need to see more of it, how the (expletive deleted) do we see more 
If we can see more, we can probably make one 
