From RG-UF/M....To RGU-2....And Beyond

Yankee Rebel · 11th September 2007, 10:49

hes likely talking about partial pressure calculations based upon volume and fractional content of gas.
that sounds smarter than i am.. dont be fooled.
probly doing stupid stuff like i have an interest in.. taking an O2 rig down well past its safe maximum opertating depths and living to tell about it.
theres math involved..

ive probly said more there than i shoulda.. so Mod's feel free to edit this post out as you see fit...

Yankee Rebel

DanDunfee · 11th September 2007, 14:12

Nothing very exotic.

Simple calcs like buoyancy, (and ballast req'd to offset),.. and center of gravity, trim, etc.

CL Oxygen content, (volumetric and mass), and O2 / PO2 time constants (eg. O2 breathdown rate) , etc.

Quickie pre-dive checks for proper regulator CMF output.

DanDunfee · 11th September 2007, 17:41

RGU-2 Scrubber mod pics that didn't make the original Article posting

The threaded exhale tube extension (gray) and nut (white) do several things:
* Re-direct exhale gas flow directly into the CL
* Compress the pellet charge compaction spring, and
* Secure the scrubber bottom cap in place

The Top and Bottom Mesh Screens now are Type 304 Stainless, .006 In. Dia., Woven Wire, 60 X 40 Mesh. Later will be replaced by an .008 Thk, Stainless Sheet w/ .02 In. Dia. Perforations.

Tom Rose · 11th September 2007, 20:59

Quote: (Originally Posted by DanDunfee)

RGU-2 Scrubber mod pics that didn't make the original Article posting

The threaded exhale tube extention (gray) and nut (white) do several things:
* Re-direct exhale gas flow directly into the CL
* Compress the pellet charge compaction spring, and
* Secure the scrubber bottom cap in place

The Top and Bottom Mesh Screens now are Type 304 Stainless, .006 In. Dia., Woven Wire, 60 X 40 Mesh. Later will be replaced by an .006 Thk, Stainless Screen w/ .020 In Dia Perforations.

Again nicely done Dan....does the tube decend below the scrubber body?

Tom

DanDunfee · 11th September 2007, 22:51

[quote=Tom Rose;136268...does the tube decend below the scrubber body?
Tom[/quote]
=================

No Tom....what ya sees is all there is... The extention tube stops at the nut, just below the bottom cap... no further extention down into the CL.

jorgey · 12th September 2007, 07:30

Quote: (Originally Posted by DanDunfee)

Nothing very exotic.

Simple calcs like buoyancy, (and ballast req'd to offset),.. and center of gravity, trim, etc.

CL Oxygen content, (volume and mass), and O2 / PO2 breathdown time, etc.

Quickie pre-dive checks for proper regulator CMF output.

Very interesting indeed! Ok, I tell you as soon as I have the Rebreather alltogether again.- I wanted to do some work on my buoyancy, as you can see in my avatar, I needed some extra weight... (notice the stone in my hands

)

ciao

j o r g e

jorgey · 12th September 2007, 07:34

Quote: (Originally Posted by Yankee Rebel)

hes likely talking about partial pressure calculations based upon volume and fractional content of gas.
that sounds smarter than i am.. dont be fooled.
probly doing stupid stuff like i have an interest in.. taking an O2 rig down well past its safe maximum opertating depths and living to tell about it.
theres math involved..

ive probly said more there than i shoulda.. so Mod's feel free to edit this post out as you see fit...

Yankee Rebel

Have you seen the old films of Hans Haas? He goes down all safe maximum operating depths of a O2 rig...

But, I wouldn't try it, specially without ppo2 measurement like he did....

ciao
j o r g e

Yankee Rebel · 13th September 2007, 01:42

Quote: (Originally Posted by jorgey)

Have you seen the old films of Hans Haas? He goes down all safe maximum operating depths of a O2 rig...

But, I wouldn't try it, specially without ppo2 measurement like he did....

ciao
j o r g e

havent seen the movies but ive read several of his books. quite an impressive man, shameful Coustaue (sp) got such credit while Hass got swept under the carpet.
i agree with PPO2 measurement to keep it safe.
Yankee Rebel

jorgey · 13th September 2007, 06:12

Quote: (Originally Posted by Yankee Rebel)

havent seen the movies but ive read several of his books. quite an impressive man, shameful Coustaue (sp) got such credit while Hass got swept under the carpet.
i agree with PPO2 measurement to keep it safe.
Yankee Rebel

That's true...
But in the german speaking countries he is well known, I could see his films a couple of times in tv, and I think he was very popular earlier here.- He couldn't make the leap over the language barrier? Maybe... On the other hand, maybe was a german/austrian diver not a so good to sell product as a french diver in those times.- I don't know, but he is really an impressive man.- Some divers tell me this year, that he was seen in africa... diving!

j o r g e

osiris · 13th September 2007, 11:51

I loved the Hans and Lotte Hass moivies form the late 60s and earlier 70s when I was just starting out. They ere darned good informative movies with no "bull". A thinking diver's diver. Love to get hold of those movie.

Quote: (Originally Posted by jorgey)

That's true...
But in the german speaking countries he is well known, I could see his films a couple of times in tv, and I think he was very popular earlier here.- He couldn't make the leap over the language barrier? Maybe... On the other hand, maybe was a german/austrian diver not a so good to sell product as a french diver in those times.- I don't know, but he is really an impressive man.- Some divers tell me this year, that he was seen in africa... diving!

j o r g e

11th September 2007, 10:49	#21 (permalink)
Yankee Rebel Custom Title Allowed! Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Jan 2006 Location: California Posts: 147	Re: From RG-UF/M....To RGU-2....And Beyond hes likely talking about partial pressure calculations based upon volume and fractional content of gas. that sounds smarter than i am.. dont be fooled. probly doing stupid stuff like i have an interest in.. taking an O2 rig down well past its safe maximum opertating depths and living to tell about it. theres math involved.. ive probly said more there than i shoulda.. so Mod's feel free to edit this post out as you see fit... Yankee Rebel
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11th September 2007, 14:12	#22 (permalink)
DanDunfee Custom Title Allowed! Current Rebreather/s: Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Other CCR Other SCR Home Build Join Date: Sep 2005 Location: Virginia, USA Posts: 204	Re: From RG-UF/M....To RGU-2....And Beyond Nothing very exotic. Simple calcs like buoyancy, (and ballast req'd to offset),.. and center of gravity, trim, etc. CL Oxygen content, (volumetric and mass), and O2 / PO2 time constants (eg. O2 breathdown rate) , etc. Quickie pre-dive checks for proper regulator CMF output. __________________ There are 'Bold' divers and old divers, but NO old, ' Bold ' divers Last edited by DanDunfee : 12th September 2007 at 11:10.
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11th September 2007, 20:59	#24 (permalink)
Tom Rose Still Learning Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Prism Topaz Other CCR Home Build Join Date: Oct 2005 Location: USA,North Carolina Posts: 328	Re: From RG-UF/M....To RGU-2....And Beyond Quote: (Originally Posted by DanDunfee) RGU-2 Scrubber mod pics that didn't make the original Article posting The threaded exhale tube extention (gray) and nut (white) do several things: * Re-direct exhale gas flow directly into the CL * Compress the pellet charge compaction spring, and * Secure the scrubber bottom cap in place The Top and Bottom Mesh Screens now are Type 304 Stainless, .006 In. Dia., Woven Wire, 60 X 40 Mesh. Later will be replaced by an .006 Thk, Stainless Screen w/ .020 In Dia Perforations. Again nicely done Dan....does the tube decend below the scrubber body? Tom __________________ The 50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong the first time. www.atlimp.com
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11th September 2007, 22:51	#25 (permalink)
DanDunfee Custom Title Allowed! Current Rebreather/s: Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Other CCR Other SCR Home Build Join Date: Sep 2005 Location: Virginia, USA Posts: 204	Re: From RG-UF/M....To RGU-2....And Beyond [quote=Tom Rose;136268...does the tube decend below the scrubber body? Tom[/quote] ================= No Tom....what ya sees is all there is... The extention tube stops at the nut, just below the bottom cap... no further extention down into the CL. __________________ There are 'Bold' divers and old divers, but NO old, ' Bold ' divers
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12th September 2007, 07:30	#26 (permalink)
jorgey New Member Current Rebreather/s: Azimuth Home Build Other Rebreather/s: Azimuth Home Build Join Date: May 2007 Location: Austria / Argentina Posts: 57	Re: From RG-UF/M....To RGU-2....And Beyond Quote: (Originally Posted by DanDunfee) Nothing very exotic. Simple calcs like buoyancy, (and ballast req'd to offset),.. and center of gravity, trim, etc. CL Oxygen content, (volume and mass), and O2 / PO2 breathdown time, etc. Quickie pre-dive checks for proper regulator CMF output. Very interesting indeed! Ok, I tell you as soon as I have the Rebreather alltogether again.- I wanted to do some work on my buoyancy, as you can see in my avatar, I needed some extra weight... (notice the stone in my hands ) ciao j o r g e
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12th September 2007, 07:34	#27 (permalink)
jorgey New Member Current Rebreather/s: Azimuth Home Build Other Rebreather/s: Azimuth Home Build Join Date: May 2007 Location: Austria / Argentina Posts: 57	Re: From RG-UF/M....To RGU-2....And Beyond Quote: (Originally Posted by Yankee Rebel) hes likely talking about partial pressure calculations based upon volume and fractional content of gas. that sounds smarter than i am.. dont be fooled. probly doing stupid stuff like i have an interest in.. taking an O2 rig down well past its safe maximum opertating depths and living to tell about it. theres math involved.. ive probly said more there than i shoulda.. so Mod's feel free to edit this post out as you see fit... Yankee Rebel Have you seen the old films of Hans Haas? He goes down all safe maximum operating depths of a O2 rig... But, I wouldn't try it, specially without ppo2 measurement like he did.... ciao j o r g e
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13th September 2007, 01:42	#28 (permalink)
Yankee Rebel Custom Title Allowed! Current Rebreather/s: Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Jan 2006 Location: California Posts: 147	Re: From RG-UF/M....To RGU-2....And Beyond Quote: (Originally Posted by jorgey) Have you seen the old films of Hans Haas? He goes down all safe maximum operating depths of a O2 rig... But, I wouldn't try it, specially without ppo2 measurement like he did.... ciao j o r g e havent seen the movies but ive read several of his books. quite an impressive man, shameful Coustaue (sp) got such credit while Hass got swept under the carpet. i agree with PPO2 measurement to keep it safe. Yankee Rebel
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13th September 2007, 06:12	#29 (permalink)
jorgey New Member Current Rebreather/s: Azimuth Home Build Other Rebreather/s: Azimuth Home Build Join Date: May 2007 Location: Austria / Argentina Posts: 57	Re: From RG-UF/M....To RGU-2....And Beyond Quote: (Originally Posted by Yankee Rebel) havent seen the movies but ive read several of his books. quite an impressive man, shameful Coustaue (sp) got such credit while Hass got swept under the carpet. i agree with PPO2 measurement to keep it safe. Yankee Rebel That's true... But in the german speaking countries he is well known, I could see his films a couple of times in tv, and I think he was very popular earlier here.- He couldn't make the leap over the language barrier? Maybe... On the other hand, maybe was a german/austrian diver not a so good to sell product as a french diver in those times.- I don't know, but he is really an impressive man.- Some divers tell me this year, that he was seen in africa... diving! j o r g e
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13th September 2007, 11:51	#30 (permalink)
osiris Custom Title Allowed! Current Rebreather/s: Inspiration Classic Sport Kiss Home Build Other Rebreather/s: Home Build Join Date: Feb 2006 Location: Auckland Posts: 320	Re: From RG-UF/M....To RGU-2....And Beyond I loved the Hans and Lotte Hass moivies form the late 60s and earlier 70s when I was just starting out. They ere darned good informative movies with no "bull". A thinking diver's diver. Love to get hold of those movie. Quote: (Originally Posted by jorgey) That's true... But in the german speaking countries he is well known, I could see his films a couple of times in tv, and I think he was very popular earlier here.- He couldn't make the leap over the language barrier? Maybe... On the other hand, maybe was a german/austrian diver not a so good to sell product as a french diver in those times.- I don't know, but he is really an impressive man.- Some divers tell me this year, that he was seen in africa... diving! j o r g e
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