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Post by nikeajax on Mar 31, 2023 8:57:44 GMT -8
Yes, I knew that, but we were talking Healthways after all JB
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Post by Jim Perdway on Apr 20, 2023 21:29:36 GMT -8
Jacob when will you be trying it out again? Looks like we are both new to the Healthways game. These Gold Labels are cool!
John I’m having trouble understanding that hybrid but perhaps because I’m unfamiliar with the Scuba. To me it looks like the exhaust is right in the intake chamber and it’s plugged with something?
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Post by SeaRat on Apr 20, 2023 21:40:23 GMT -8
Jacob when will you be trying it out again? Looks like we are both new to the Healthways game. These Gold Labels are cool! Jim, John I’m having trouble understanding that hybrid but perhaps because I’m unfamiliar with the Scuba. To me it looks like the exhaust is right in the intake chamber? That's because the exhaust is right in the intake chamber. This is how Healthways got around the U.S. Divers Company patent on the exhaust for the double hose regulator, being a duckbill right at the main diaphragm. (Dacor got around the U.S. Divers Company patent with the dual diaphragm exhaust.) Healthways Scuba Hybrid3 by John Ratliff, on Flickr Here is what the exhaust looks like. Note the holes in the case outside of the exhaust diaphragm, which is inside the main can. Healthways Scuba Hybrid5 by John Ratliff, on Flickr Here's a diagram I put together showing that the Healthways exhaust actually had an advantage over the USD duckbill exhaust, in that it was higher in the water column in a horizontal position. SCUBA vs Aquamaster001 by John Ratliff, on Flickr I did a calculation about the surface area in order to determine the force needed to exhale: Healthways Scuba Exhaust Calcs by John Ratliff, on Flickr Note that the force to open the exhaust diaphragm is only about 2 ounces of water pressure. Healthways originally did not have a duckbill inside, but later put one in due to "instability," which actually meant that in certain positions (head down) the hose would fill with water, and it would need to be cleared. But without that secondary duckbill, the Healthways original Scuba regulator breathed like a dream on exhalation. Combine that with the third generation Golld Label innards, and you have a regulator which is very, very easy breathing. Thuis is why I call it a Healthways Hybrid Scuba regulator, as it combines the best of the original Scuba with the Gold Label. Now saying that, I place a cut-down version of the USD duckbill in there to prevent water from going much up the hose. This cut-down version has a very large cut area, so the resistance is very small. IMG_2688 by John Ratliff, on Flickr This is what the original Healthways secondary duckbill looked like. Some of our members have also made this duckbill for the Healthways original Scuba. John
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Post by Jim Perdway on Apr 20, 2023 21:50:54 GMT -8
Ah that makes more sense, thank you for the clarification John. How does this system compare to the exhaust on Gold Label for performance? Is GL exhaust design same as scuba deluxe? Also, if a deluxe has a snorkeljet installed, how does it differ to a GL in function and design?
Sorry for the question train
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Post by SeaRat on Apr 20, 2023 21:57:32 GMT -8
Tomorrow I'll answer...got to take the garbage out now.
John
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Post by Tusker on Apr 21, 2023 5:52:58 GMT -8
Jim, hopefully soon! I'm heading out to a quarry tomorrow to test out a new exposure suit and finalize my adjustments to the Aquarius. I'm also moving 200 something miles in late May, so it may be a minute. Phil gave some great instructions I'm going to try and get to in the next few days, that way at least I know it'll be adjusted!
John, I'm also looking forward to the explanation to how the snorkel jet combined with the GL internals on a SCUBA results in an improvement over both as standalone options.
Jacob
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Post by nikeajax on Apr 21, 2023 8:08:25 GMT -8
Stephan, this should help with any lingering doubts: The light blue thing inside the air horn is the DB. I did this illustration a few years back because the Scuba-A's exhaust really flummoxes people if they can't see it on a few different angles. JB
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Post by Jim Perdway on Apr 21, 2023 8:26:21 GMT -8
that’s a great illustration JB, very clear!
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Post by SeaRat on Apr 21, 2023 12:10:37 GMT -8
Ah that makes more sense, thank you for the clarification John. How does this system compare to the exhaust on Gold Label for performance? Is GL exhaust design same as scuba deluxe? Also, if a deluxe has a snorkeljet installed, how does it differ to a GL in function and design? Sorry for the question train The Gold Label has the same exhaust as the Scuba Deluxe, which really is not too large. Here's wha it looks like. IMG_1417 by John Ratliff, on Flickr If the non-return valves are removed from the Gold Label mouthpiece, you will get blow by to the exhaust hose and out. That's with the Healthways mouthpiece. If the non-return vales are taken out of the healthways Deluxe (and probably the Gold Label), with the new silicone diaphragm you might get a complete blockage of the exhaust as the higher pressure can press down the main diaphragm against the exhaust mushroom. So you need to have the mouthpiece mushrooms in place to have it function correctly. I have used both the Hope-Page and the USD curved mouthpiece successfully with the Gold Label. Compared to my hydrid Healthways Scuba, the exhaust of the Hybrid is better (lower resistance) than the mushroom of the Gold Label top box. John
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