Meg weight and buoyancy

**Scott** · 19th December 2006, 05:53

Hi everyone.. I am curious if anyone has actually has some numbers for these?

Dry weight of the Meg (no tanks, no tank mounts, no wing, no back plate... but including the hoses, regulators, DSV, counterlungs)

The floodable volume of the loop... but, I don't think I want to include the actual counter lungs into that too much, because on full inhale, they should be fairly empty, so not very buoyant.. so not really contributing to a change in buoyancy in a full flood with bailout to open circuit. That said, I can always subtract the volume of the counterlungs if someone has the total amount =)

I'd be interested in knowing both for the full Meg can, and the Mini Meg..

(I'm trying to figure out how much my bach is going to ache when my baby is delivered

If noone has this info.. I'll figure it out on my Meg when it comes... for any future inquiries.

Take care, and thanks
Scott

Gilles · 19th December 2006, 07:55

The following are approximate, based on memory of bag weighing exercise for flight.

Can with empty cartridge 7Kg. Add DSV, regs, loop add another 7 Kg I think. head is another 4 Kg's.

I'm unsure about the loop volume as well. 9-10L comes to mind.

Mine, with tanks/sorb/BP all assembled is 35 Kg. I sink like a rock with it (with over-shortied wetsuit and no weight).

Sorry not much help. Only that I have a altered back structure that handles the above weight without too much problem. Watch out for those herniated discs!

**Scott** · 19th December 2006, 13:35

Thank you =)

Wish I could afford either a sherpa or a chiropractor =) I'm going to need one of them..

**wedivebc** · 19th December 2006, 16:18

Quote: (Originally Posted by Scott)

Thank you =)

Wish I could afford either a sherpa or a chiropractor =) I'm going to need one of them..

Naw, still lighter than a set of double al80s. I can dive my meg in fresh water with a 7mil wetsuit a SS BP and no lead at all. That is with minimal loop volume. I add a couple of pounds to allow me to stay neutral for O2 flushes and such.
Don't know why you're concerned about flooded weight, never happen

**Scott** · 19th December 2006, 17:36

Just like to know things for utter worst case scenario

And for double AL80s.. I side mount.. so I only have to carry one to the water at a time

(I hurt my knee =( )

Take care,

Scott

nmanfield · 19th December 2006, 20:31

Quote: (Originally Posted by Scott)

Just like to know things for utter worst case scenario

And for double AL80s.. I side mount.. so I only have to carry one to the water at a time

(I hurt my knee =( )

Take care,

Scott

Hi Scott,

Not meaning to sound flippant but if you managed to flood your Meg, I think the extra weight might be the last of your problems!

Have fun form another new Meg guy

Regards

nick

**Scott** · 19th December 2006, 23:18

Well.. I won't start my official training until Jan 25th.. but my theories on utter most worst case scenario.... if the meg floods completely and I dont have enough buoyancy to surface.. I'm cutting it loose and doing a swimming ascent with my bailout... my life = worth more than 7 grand +/- USD

IF I am comfortable enough at the time of the situation, I'd go ahead and clip my primary reel to it and then let it drop.. spooling out... so it would be easier to recover...

I'm trying to decide on the best wing right now.. I would really love to be able to use my 18# oxycheq.. but I don't know if I would be comfortable with it...

I've used it with an aluminum 80, my back plate, and a lp45... so figure I had roughly 12+ pounds of negative buoyancy strapped to me..5/4 full suit, 1mm hooded vest, fresh water and I was very comfy with it.. it doesn't get me very far out of the water on the surface.. but I never have had a dive in rough water.. so it's been a non issue thus far... It might work for me on the Meg..

Really depends on how negative she comes out to be under operation, I guess..

Thanks,

Scott

Gilles · 20th December 2006, 06:24

Quote: (Originally Posted by Scott)

Well.. I won't start my official training until Jan 25th.. but my theories on utter most worst case scenario.... if the meg floods completely and I dont have enough buoyancy to surface.. I'm cutting it loose and doing a swimming ascent with my bailout... my life = worth more than 7 grand +/- USD

IF I am comfortable enough at the time of the situation, I'd go ahead and clip my primary reel to it and then let it drop.. spooling out... so it would be easier to recover...

I'm trying to decide on the best wing right now.. I would really love to be able to use my 18# oxycheq.. but I don't know if I would be comfortable with it...

I've used it with an aluminum 80, my back plate, and a lp45... so figure I had roughly 12+ pounds of negative buoyancy strapped to me..5/4 full suit, 1mm hooded vest, fresh water and I was very comfy with it.. it doesn't get me very far out of the water on the surface.. but I never have had a dive in rough water.. so it's been a non issue thus far... It might work for me on the Meg..

Really depends on how negative she comes out to be under operation, I guess..

Thanks,

Scott

I think you're getting ahead of yourself. Your training should include flood recovery, and as far as I know, there are very few plausible scenarios where you want to remove your rig.

decoweenie · 22nd December 2006, 14:31

FYI:

Full can only - 4.6 kg
Mini can only - 3.3 kg
Lid only (J/S electronic) - 3.5 kg
Golem radial scrubber only (not filled) - 1.5 kg

So:

Full can + lid ~ 8 kg
Mini can + lid ~ 7 kg
Plus sorb, regs, backplate, etc...

Dive!Dive! · 26th January 2007, 14:54

Phi (or anyone else...)
Can I pose the question slightly differently: Assume a fully assembled Meg with 3lt steel fabers, full scrubber etc. Ignore backplate as that will be the same. How does the Meg compare to twin faber 12's , bands, manifold and regs ? If I have that data then I can get my weighting pretty close when I do the course after easter.....
Cheers
Steve

19th December 2006, 05:53	#1 (permalink)
Scott Supporting Member Current Rebreather/s: Other CCR Other Rebreather/s: Megalodon Other CCR Join Date: Mar 2006 Location: Mendota, Virginia Posts: 181	Meg weight and buoyancy Hi everyone.. I am curious if anyone has actually has some numbers for these? Dry weight of the Meg (no tanks, no tank mounts, no wing, no back plate... but including the hoses, regulators, DSV, counterlungs) The floodable volume of the loop... but, I don't think I want to include the actual counter lungs into that too much, because on full inhale, they should be fairly empty, so not very buoyant.. so not really contributing to a change in buoyancy in a full flood with bailout to open circuit. That said, I can always subtract the volume of the counterlungs if someone has the total amount =) I'd be interested in knowing both for the full Meg can, and the Mini Meg.. (I'm trying to figure out how much my bach is going to ache when my baby is delivered If noone has this info.. I'll figure it out on my Meg when it comes... for any future inquiries. Take care, and thanks Scott
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19th December 2006, 07:55	#2 (permalink)
Gilles Worship the feminine Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2005 Location: Den Haag (Netherlands) Posts: 762	Re: Meg weight and buoyancy The following are approximate, based on memory of bag weighing exercise for flight. Can with empty cartridge 7Kg. Add DSV, regs, loop add another 7 Kg I think. head is another 4 Kg's. I'm unsure about the loop volume as well. 9-10L comes to mind. Mine, with tanks/sorb/BP all assembled is 35 Kg. I sink like a rock with it (with over-shortied wetsuit and no weight). Sorry not much help. Only that I have a altered back structure that handles the above weight without too much problem. Watch out for those herniated discs! __________________ Gilles http://www.dirrebreather.com
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19th December 2006, 13:35	#3 (permalink)
Scott Supporting Member Current Rebreather/s: Other CCR Other Rebreather/s: Megalodon Other CCR Join Date: Mar 2006 Location: Mendota, Virginia Posts: 181	Re: Meg weight and buoyancy Thank you =) Wish I could afford either a sherpa or a chiropractor =) I'm going to need one of them..
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19th December 2006, 16:18	#4 (permalink)
wedivebc Dave Tomblin Current Rebreather/s: Megalodon Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Other CCR Join Date: Feb 2005 Location: Vancouver Island BC Canada Posts: 1,508	Re: Meg weight and buoyancy Quote: (Originally Posted by Scott) Thank you =) Wish I could afford either a sherpa or a chiropractor =) I'm going to need one of them.. Naw, still lighter than a set of double al80s. I can dive my meg in fresh water with a 7mil wetsuit a SS BP and no lead at all. That is with minimal loop volume. I add a couple of pounds to allow me to stay neutral for O2 flushes and such. Don't know why you're concerned about flooded weight, never happen __________________ Cheers, Dave.... Man is the only animal burdened with the knowledge he will eventually die
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19th December 2006, 17:36	#5 (permalink)
Scott Supporting Member Current Rebreather/s: Other CCR Other Rebreather/s: Megalodon Other CCR Join Date: Mar 2006 Location: Mendota, Virginia Posts: 181	Re: Meg weight and buoyancy Just like to know things for utter worst case scenario And for double AL80s.. I side mount.. so I only have to carry one to the water at a time (I hurt my knee =( ) Take care, Scott
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19th December 2006, 20:31	#6 (permalink)
nmanfield Megalegalegalegadingdong! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: May 2005 Location: Odessa, Ukraine Posts: 329	Re: Meg weight and buoyancy Quote: (Originally Posted by Scott) Just like to know things for utter worst case scenario And for double AL80s.. I side mount.. so I only have to carry one to the water at a time (I hurt my knee =( ) Take care, Scott Hi Scott, Not meaning to sound flippant but if you managed to flood your Meg, I think the extra weight might be the last of your problems! Have fun form another new Meg guy Regards nick __________________ Tub 'O Lard
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19th December 2006, 23:18	#7 (permalink)
Scott Supporting Member Current Rebreather/s: Other CCR Other Rebreather/s: Megalodon Other CCR Join Date: Mar 2006 Location: Mendota, Virginia Posts: 181	Re: Meg weight and buoyancy Well.. I won't start my official training until Jan 25th.. but my theories on utter most worst case scenario.... if the meg floods completely and I dont have enough buoyancy to surface.. I'm cutting it loose and doing a swimming ascent with my bailout... my life = worth more than 7 grand +/- USD IF I am comfortable enough at the time of the situation, I'd go ahead and clip my primary reel to it and then let it drop.. spooling out... so it would be easier to recover... I'm trying to decide on the best wing right now.. I would really love to be able to use my 18# oxycheq.. but I don't know if I would be comfortable with it... I've used it with an aluminum 80, my back plate, and a lp45... so figure I had roughly 12+ pounds of negative buoyancy strapped to me..5/4 full suit, 1mm hooded vest, fresh water and I was very comfy with it.. it doesn't get me very far out of the water on the surface.. but I never have had a dive in rough water.. so it's been a non issue thus far... It might work for me on the Meg.. Really depends on how negative she comes out to be under operation, I guess.. Thanks, Scott
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20th December 2006, 06:24	#8 (permalink)
Gilles Worship the feminine Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2005 Location: Den Haag (Netherlands) Posts: 762	Re: Meg weight and buoyancy Quote: (Originally Posted by Scott) Well.. I won't start my official training until Jan 25th.. but my theories on utter most worst case scenario.... if the meg floods completely and I dont have enough buoyancy to surface.. I'm cutting it loose and doing a swimming ascent with my bailout... my life = worth more than 7 grand +/- USD IF I am comfortable enough at the time of the situation, I'd go ahead and clip my primary reel to it and then let it drop.. spooling out... so it would be easier to recover... I'm trying to decide on the best wing right now.. I would really love to be able to use my 18# oxycheq.. but I don't know if I would be comfortable with it... I've used it with an aluminum 80, my back plate, and a lp45... so figure I had roughly 12+ pounds of negative buoyancy strapped to me..5/4 full suit, 1mm hooded vest, fresh water and I was very comfy with it.. it doesn't get me very far out of the water on the surface.. but I never have had a dive in rough water.. so it's been a non issue thus far... It might work for me on the Meg.. Really depends on how negative she comes out to be under operation, I guess.. Thanks, Scott I think you're getting ahead of yourself. Your training should include flood recovery, and as far as I know, there are very few plausible scenarios where you want to remove your rig. __________________ Gilles http://www.dirrebreather.com
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22nd December 2006, 14:31	#9 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Re: Meg weight and buoyancy FYI: Full can only - 4.6 kg Mini can only - 3.3 kg Lid only (J/S electronic) - 3.5 kg Golem radial scrubber only (not filled) - 1.5 kg So: Full can + lid ~ 8 kg Mini can + lid ~ 7 kg Plus sorb, regs, backplate, etc... __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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26th January 2007, 14:54	#10 (permalink)
Dive!Dive! RBW Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Sep 2006 Location: Somerset, UK Posts: 101	Re: Meg weight and buoyancy Phi (or anyone else...) Can I pose the question slightly differently: Assume a fully assembled Meg with 3lt steel fabers, full scrubber etc. Ignore backplate as that will be the same. How does the Meg compare to twin faber 12's , bands, manifold and regs ? If I have that data then I can get my weighting pretty close when I do the course after easter..... Cheers Steve
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