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Post by antique diver on Sept 15, 2023 15:15:30 GMT -8
Just when I was getting over the trials and frustrations of my previous two conversions, and thinking "never again", this box showed up.... and I just can't resist putting together a third one. Darn that guy that sent me this gob of goodies. You all know him. Each of my previous conversions differed from each other in their configuration, and actually I have been daydreaming about what I could do with yet another version. This one is also of WW2 vintage (1944), and will be a much simpler config without a separate 1st stage, using the original built in 1st stage system with very minimal modification. I want to keep it more like the 40's and 50's conversions, but it needs to be safer and better than the 1953 Popular Science death-trap. Doesn't look like much yet, but it will soon.  |
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Post by nikeajax on Sept 15, 2023 15:42:23 GMT -8
Bill, it's in your blood, stop resisting! I have a weakness for a certain brand of PC from your state: Compaq computers was based in Texas!
I'm very much looking forward to hearing what you're going to do: that last one you did was super cute. So, let me guess, this one came from the other side of the Bay where I live, eh?
JB
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Post by vance on Sept 15, 2023 21:08:51 GMT -8
Huh. Would you look at that! This one has a separate ring that the diaphragm attaches to, making it easier to access the internals. On the ones w/o the ring, you have to untie the diaphragm to get inside. The ring is, well...., the ring you see in the foreground of the photo.
Swell looking diaphragm you got there, Bill!
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Post by antique diver on Sept 16, 2023 5:07:42 GMT -8
Huh. Would you look at that.... Swell looking diaphragm you got there, Bill!Well, you made it! It not only looks good, but it works perfectly in my initial testing  Thank you!  |
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Post by antique diver on Sept 20, 2023 9:44:40 GMT -8
Bendix diving lung #3 is shaping up. The inhalation configuration is working well with some adjustments (and removal of some unneeded components) to the original internal first stage. There is still room for final adjustments if the test dive doesn't satisfy me. I haven't begun actual configuration of the exhaling side, but will likely be similar to my other two Bendix conversions. Initial inhalation effort is very low, and sustained effort at normal breathing rate is very nice for this type of device. However, due to the way the internal first stage works, the breathing effort will increase noticeably with depth, so this will never be a deep diving device. I would be pleased if it's comfortable at 25-30'with slow and easy swimming. I couldn't get this 9 second video to show up here, but if you click link you should see the breathing test on the bench. |
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Post by antique diver on Sept 20, 2023 10:09:35 GMT -8
Bendix diving lung #3 is shaping up. The inhalation configuration is working well with some adjustments (and removal of some unneeded components) to the original internal first stage. There is still room for final adjustments if the test dive doesn't satisfy me. I haven't begun actual configuration of the exhaling side, but will likely be similar to my other two Bendix conversions. Initial inhalation effort is very low, and sustained effort at normal breathing rate is very nice for this type of device. However, due to the way the internal first stage works, the breathing effort will increase noticeably with depth, so this will never be a deep diving device. I would be pleased if it's comfortable at 25-30'with slow and easy swimming. I couldn't get this 9 second video to show up here, but if you click link you should see the breathing test on the bench. Here's the front cover on, and cracking effort shown on the Magnehelic gauge:  |
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Post by nikeajax on Sept 20, 2023 10:11:05 GMT -8
Bill, that clip made me smile  It again reminded me of another Terry Gilliam movie, "12 Monkeys", here's something for you: JB |
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Post by spirou on Sept 20, 2023 11:13:35 GMT -8
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Post by nikeajax on Oct 29, 2023 11:40:53 GMT -8
Bill, just curious, have you ever thought about making a scuba-reg with a propane regulator? The Northill Air Mite always makes me think of them...
JB
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Post by antique diver on Oct 29, 2023 13:58:17 GMT -8
Bill, just curious, have you ever thought about making a scuba-reg with a propane regulator? The Northill Air Mite always makes me think of them... JB  |
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Post by vance on Oct 29, 2023 15:48:24 GMT -8
JB taunts us with this kinda thing. I have looked at LP gas regulators with the thought, "What if...?"
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Post by antique diver on Oct 30, 2023 13:29:23 GMT -8
JB taunts us with this kinda thing. I have looked at LP gas regulators with the thought, "What if...?" |
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Post by SeaRat on Oct 30, 2023 14:26:42 GMT -8
JB taunts us with this kinda thing. I have looked at LP gas regulators with the thought, "What if...?" By a few years….  John |
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Post by Fibonacci on Oct 30, 2023 15:58:16 GMT -8
Bill, just curious, have you ever thought about making a scuba-reg with a propane regulator? The Northill Air Mite always makes me think of them... JB Who needs a regulator  SCUBA with propane tank by fibonacci101, on Flickr |
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Post by nikeajax on Oct 30, 2023 16:49:03 GMT -8
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Thank you! 
It again reminded me of another Terry Gilliam movie, "12 Monkeys", here's something for you:
