What Changes Would You Make to A Meg?

finbar.taylor · 23rd July 2006, 11:02

Quote: (Originally Posted by JonnyB)

Could you please elaborate what you mean by this? Is it that you do not have an ADV on your meg?

/Jonny

I'm not a meg diver but assume this is the same as on my KISS. If you've bailed out to OC then you have to go back on the loop to activate the ADV to do the dill flush.
If there was a manual dill add button then you could flush the loop with out having to breath what ever nasties are curently in there.

Fin

JonnyB · 23rd July 2006, 11:26

Quote: (Originally Posted by finbar.taylor)

I'm not a meg diver but assume this is the same as on my KISS. If you've bailed out to OC then you have to go back on the loop to activate the ADV to do the dill flush.
If there was a manual dill add button then you could flush the loop with out having to breath what ever nasties are curently in there.

Fin

Not at all, the adv on the Meg can be fired by pressing on it, and it is very powerfull and will flush the whole loop instantly. That is why i am somewhat confused by the meaning of the previous poster.

/Jonny

Silent · 23rd July 2006, 12:26

Quote: (Originally Posted by sabgia)

1) Attachment for sensor carriage to enable pressurization of sensors to about 1.6 bar (to pre-dive check sensors),

This is something I would be cautious about as I'm not sure the sensors would tolerate being pressurised from the sensor face, i.e would this not potentially cause the KOH solution to be forced out the back of the cell & compromise the PCB??

Of course I may be completely wrong but I wouldn't have thought the design spec for a cell would include a tolerance to a very increased pressure through the cell face.

Maybe Alex (AD_Ward9) can clarify this through the testing they have done?

Neil

RonMicjan · 24th July 2006, 03:25

sensors do not like differential pressure, all RBs have a pathway for pressure to be equal on each side of the sensor.

RonMicjan · 24th July 2006, 03:26

Quote: (Originally Posted by finbar.taylor)

I'm not a meg diver but assume
Fin

never assume...

your kiss and the meg are as different as you and your sister : )

Gilles · 24th July 2006, 05:20

Quote: (Originally Posted by JonnyB)

Could you please elaborate what you mean by this? Is it that you do not have an ADV on your meg?

/Jonny

What I meant about this was if you go off loop (or are rescuing someone unconscious with a hyperoxic mix but still breathing), and wished to flush the loop, the existing set up doesn't really work as the you only flush the volume between the ADV and the OPV. If there was another OPV on the bottom of the inhale CL, then a majority of the loop volume could be flushed without the requirement of having the mouthpeice in your mouth (or having a concious casualty allowing flushed gas to escape from his mouthpeice).

Make sense?

On pressuring the sensors, what if plugs were made that screw into the threads on the head (where the hoses screw in). One plug contains an O2 nipple, and another an adjustable pressure relief valve and a gauge. You pressure up the entire scrubber to the pressure you want, and monitor the mV's?

No differential pressure on the sensors (I think)

RonMicjan · 24th July 2006, 06:06

I doubt that blowing the lid off of your meg is covered under warranty. However would you please video tape this attempt so we can all learn (snicker, snicker) from it. The meg that was used as a bomb in the movie "The Cave" was a prop, not a real meg (perish the thought), so you would be the first to blow up a MEG, the darwin award will be awarded posthumously.

Lets do the math kiddies:

(3.14*Radius of the meg head squared)* whatever pressure you decide to pump your meg up to = way too much potential energy pushing up on those tiny stainless steel clips hooked over a tiny protrusion of plastic for me to want to watch in person. but please...carry on, make sure there is tape and a good battery in the camera, bet you wont do this twice.

If you dont get the math, I will do a quick estimate for you. (and Im assuming you dont know how to do the math, or you wouldnt have come up with this rather silly idea in the first place) I dont have my meg head handy, so estimating the head diameter at 8".

For every 1 PSI (pounds per square inch, get it?) over ambient you inject, you apply about 50 lbs of upward force pushing the headplate out of the plenum. If you use pure O2 to pressureize the plenum and you want to see 1.6 PO2, you need to fill to about 10 PSI, this would put 500 lbs of force on the meg head. Make sure its a large gauge so you can see if from across the room, and the extra weight will make it a better projectile.

So, we have covered this little exercize with a large amount of humor and tounge firmly in cheek, we hope that we have not offended anyone beyond recovery and sincierly hope this message reaches the proper parties in plenty of time to avoid certain catastrophe.

[/dis mode off]

AD_ward9 · 24th July 2006, 06:15

Quote: (Originally Posted by Silent)

Maybe Alex (AD_Ward9) can clarify this through the testing they have done?

Neil

Sorry, never tested O2 sensors with differential pressure on them, because just looking at their construction, they would not like that very much.
Alex

Gilles · 24th July 2006, 09:31

Quote: (Originally Posted by RonMicjan)

I doubt that blowing the lid off of your meg is covered under warranty. However would you please video tape this attempt so we can all learn (snicker, snicker) from it. The meg that was used as a bomb in the movie "The Cave" was a prop, not a real meg (perish the thought), so you would be the first to blow up a MEG, the darwin award will be awarded posthumously.

Lets do the math kiddies:

(3.14*Radius of the meg head squared)* whatever pressure you decide to pump your meg up to = way too much potential energy pushing up on those tiny stainless steel clips hooked over a tiny protrusion of plastic for me to want to watch in person. but please...carry on, make sure there is tape and a good battery in the camera, bet you wont do this twice.

If you dont get the math, I will do a quick estimate for you. (and Im assuming you dont know how to do the math, or you wouldnt have come up with this rather silly idea in the first place) I dont have my meg head handy, so estimating the head diameter at 8".

For every 1 PSI (pounds per square inch, get it?) over ambient you inject, you apply about 50 lbs of upward force pushing the headplate out of the plenum. If you use pure O2 to pressureize the plenum and you want to see 1.6 PO2, you need to fill to about 10 PSI, this would put 500 lbs of force on the meg head. Make sure its a large gauge so you can see if from across the room, and the extra weight will make it a better projectile.

they say that stupidity should be painfull, and there goes your proof!!

So, we have covered this little exercize with a large amount of humor and tounge firmly in cheek, we hope that we have not offended anyone beyond recovery and sincierly hope this message reaches the proper parties in plenty of time to avoid certain catastrophe.

[/dis mode off]

FUAD

See if you can figure that out SA!

What the f*** is wrong with brainstorming ideas, and maybe not getting things quite right off the bat. I made it clear that I stood to be corrected. The insults made are a clear indication of your disgusting nature. This is your idea of humour?

I'm truly offended by this totally inappropriate response! I enjoyed this forum so much until this moment. I hope I'm not the only one who appreciates the evil of this lowly, insulting, and arrogant

reply.

***EBT*** · 24th July 2006, 09:44

Jeez guys, I didnt realise you got that grouchy without coffee. As the previous poster said "tongue in cheek"... that means its being done with humour

If you think thats flaming, you've obviously missed out on the early days of techdiver and sadly the only place to find similar amusement now is on a relatively closed yahoo group

Have fun now!

23rd July 2006, 11:02	#21 (permalink)
finbar.taylor Rebreather World Writer Current Rebreather/s: Inspiration Classic Classic Kiss Other Rebreather/s: Join Date: Apr 2005 Location: UK, SE Posts: 101	Re: What Changes Would You Make to A Meg? Quote: (Originally Posted by JonnyB) Could you please elaborate what you mean by this? Is it that you do not have an ADV on your meg? /Jonny I'm not a meg diver but assume this is the same as on my KISS. If you've bailed out to OC then you have to go back on the loop to activate the ADV to do the dill flush. If there was a manual dill add button then you could flush the loop with out having to breath what ever nasties are curently in there. Fin
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23rd July 2006, 11:26	#22 (permalink)
JonnyB Jonny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 944	Re: What Changes Would You Make to A Meg? Quote: (Originally Posted by finbar.taylor) I'm not a meg diver but assume this is the same as on my KISS. If you've bailed out to OC then you have to go back on the loop to activate the ADV to do the dill flush. If there was a manual dill add button then you could flush the loop with out having to breath what ever nasties are curently in there. Fin Not at all, the adv on the Meg can be fired by pressing on it, and it is very powerfull and will flush the whole loop instantly. That is why i am somewhat confused by the meaning of the previous poster. /Jonny __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
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23rd July 2006, 12:26	#23 (permalink)
Silent Staying Silent! Mostly... Current Rebreather/s: Megalodon Other Rebreather/s: Ouroboros Join Date: Jun 2005 Location: Northants, UK Posts: 382	Re: What Changes Would You Make to A Meg? Quote: (Originally Posted by sabgia) 1) Attachment for sensor carriage to enable pressurization of sensors to about 1.6 bar (to pre-dive check sensors), This is something I would be cautious about as I'm not sure the sensors would tolerate being pressurised from the sensor face, i.e would this not potentially cause the KOH solution to be forced out the back of the cell & compromise the PCB?? Of course I may be completely wrong but I wouldn't have thought the design spec for a cell would include a tolerance to a very increased pressure through the cell face. Maybe Alex (AD_Ward9) can clarify this through the testing they have done? Neil __________________ On the dark side everyone can hear you scream......
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24th July 2006, 03:25	#24 (permalink)
RonMicjan Cap Ron scourge of the NW Current Rebreather/s: Megalodon Dolphin Home Build Other Rebreather/s: Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Cape Disapointment, The Graveyard of the Pacific Posts: 1,082	Re: What Changes Would You Make to A Meg? sensors do not like differential pressure, all RBs have a pathway for pressure to be equal on each side of the sensor. __________________ Ron "Life is pain princess, anyone who tells you different, is selling something", The Dread Pirate Wesley. www.tmishop.com Diving bits etc.
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24th July 2006, 03:26	#25 (permalink)
RonMicjan Cap Ron scourge of the NW Current Rebreather/s: Megalodon Dolphin Home Build Other Rebreather/s: Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Cape Disapointment, The Graveyard of the Pacific Posts: 1,082	Re: What Changes Would You Make to A Meg? Quote: (Originally Posted by finbar.taylor) I'm not a meg diver but assume Fin never assume... your kiss and the meg are as different as you and your sister : ) __________________ Ron "Life is pain princess, anyone who tells you different, is selling something", The Dread Pirate Wesley. www.tmishop.com Diving bits etc.
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24th July 2006, 05:20	#26 (permalink)
Gilles Worship the feminine Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2005 Location: Den Haag (Netherlands) Posts: 761	Re: What Changes Would You Make to A Meg? Quote: (Originally Posted by JonnyB) Could you please elaborate what you mean by this? Is it that you do not have an ADV on your meg? /Jonny What I meant about this was if you go off loop (or are rescuing someone unconscious with a hyperoxic mix but still breathing), and wished to flush the loop, the existing set up doesn't really work as the you only flush the volume between the ADV and the OPV. If there was another OPV on the bottom of the inhale CL, then a majority of the loop volume could be flushed without the requirement of having the mouthpeice in your mouth (or having a concious casualty allowing flushed gas to escape from his mouthpeice). Make sense? On pressuring the sensors, what if plugs were made that screw into the threads on the head (where the hoses screw in). One plug contains an O2 nipple, and another an adjustable pressure relief valve and a gauge. You pressure up the entire scrubber to the pressure you want, and monitor the mV's? No differential pressure on the sensors (I think) __________________ Gilles http://www.dirrebreather.com
(Offline)

24th July 2006, 06:06	#27 (permalink)
RonMicjan Cap Ron scourge of the NW Current Rebreather/s: Megalodon Dolphin Home Build Other Rebreather/s: Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Cape Disapointment, The Graveyard of the Pacific Posts: 1,082	Re: What Changes Would You Make to A Meg? I doubt that blowing the lid off of your meg is covered under warranty. However would you please video tape this attempt so we can all learn (snicker, snicker) from it. The meg that was used as a bomb in the movie "The Cave" was a prop, not a real meg (perish the thought), so you would be the first to blow up a MEG, the darwin award will be awarded posthumously. Lets do the math kiddies: (3.14Radius of the meg head squared) whatever pressure you decide to pump your meg up to = way too much potential energy pushing up on those tiny stainless steel clips hooked over a tiny protrusion of plastic for me to want to watch in person. but please...carry on, make sure there is tape and a good battery in the camera, bet you wont do this twice. If you dont get the math, I will do a quick estimate for you. (and Im assuming you dont know how to do the math, or you wouldnt have come up with this rather silly idea in the first place) I dont have my meg head handy, so estimating the head diameter at 8". For every 1 PSI (pounds per square inch, get it?) over ambient you inject, you apply about 50 lbs of upward force pushing the headplate out of the plenum. If you use pure O2 to pressureize the plenum and you want to see 1.6 PO2, you need to fill to about 10 PSI, this would put 500 lbs of force on the meg head. Make sure its a large gauge so you can see if from across the room, and the extra weight will make it a better projectile. So, we have covered this little exercize with a large amount of humor and tounge firmly in cheek, we hope that we have not offended anyone beyond recovery and sincierly hope this message reaches the proper parties in plenty of time to avoid certain catastrophe. [/dis mode off] __________________ Ron "Life is pain princess, anyone who tells you different, is selling something", The Dread Pirate Wesley. www.tmishop.com Diving bits etc. Last edited by RonMicjan : 24th July 2006 at 14:08.
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24th July 2006, 06:15	#28 (permalink)
AD_ward9 So much more to learn Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: Scotland Posts: 1,607	Re: What Changes Would You Make to A Meg? Quote: (Originally Posted by Silent) Maybe Alex (AD_Ward9) can clarify this through the testing they have done? Neil Sorry, never tested O2 sensors with differential pressure on them, because just looking at their construction, they would not like that very much. Alex
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24th July 2006, 09:31	#29 (permalink)
Gilles Worship the feminine Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2005 Location: Den Haag (Netherlands) Posts: 761	Re: What Changes Would You Make to A Meg? Quote: (Originally Posted by RonMicjan) I doubt that blowing the lid off of your meg is covered under warranty. However would you please video tape this attempt so we can all learn (snicker, snicker) from it. The meg that was used as a bomb in the movie "The Cave" was a prop, not a real meg (perish the thought), so you would be the first to blow up a MEG, the darwin award will be awarded posthumously. Lets do the math kiddies: (3.14Radius of the meg head squared) whatever pressure you decide to pump your meg up to = way too much potential energy pushing up on those tiny stainless steel clips hooked over a tiny protrusion of plastic for me to want to watch in person. but please...carry on, make sure there is tape and a good battery in the camera, bet you wont do this twice. If you dont get the math, I will do a quick estimate for you. (and Im assuming you dont know how to do the math, or you wouldnt have come up with this rather silly idea in the first place) I dont have my meg head handy, so estimating the head diameter at 8". For every 1 PSI (pounds per square inch, get it?) over ambient you inject, you apply about 50 lbs of upward force pushing the headplate out of the plenum. If you use pure O2 to pressureize the plenum and you want to see 1.6 PO2, you need to fill to about 10 PSI, this would put 500 lbs of force on the meg head. Make sure its a large gauge so you can see if from across the room, and the extra weight will make it a better projectile. they say that stupidity should be painfull, and there goes your proof!! So, we have covered this little exercize with a large amount of humor and tounge firmly in cheek, we hope that we have not offended anyone beyond recovery and sincierly hope this message reaches the proper parties in plenty of time to avoid certain catastrophe. [/dis mode off] FUAD See if you can figure that out SA! What the f*** is wrong with brainstorming ideas, and maybe not getting things quite right off the bat. I made it clear that I stood to be corrected. The insults made are a clear indication of your disgusting nature. This is your idea of humour? I'm truly offended by this totally inappropriate response! I enjoyed this forum so much until this moment. I hope I'm not the only one who appreciates the evil of this lowly, insulting, and arrogant reply. __________________ Gilles http://www.dirrebreather.com
(Offline)

24th July 2006, 09:44	#30 (permalink)
*EBT* Apprentice Luddite Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: UK, Brighton Posts: 1,855	Re: What Changes Would You Make to A Meg? Jeez guys, I didnt realise you got that grouchy without coffee. As the previous poster said "tongue in cheek"... that means its being done with humour If you think thats flaming, you've obviously missed out on the early days of techdiver and sadly the only place to find similar amusement now is on a relatively closed yahoo group Have fun now! __________________ Eagles May Soar, but weasels don't get sucked into jet engines! Rebreather World Terms of service Real diving t-shirts for real divers
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