Meg Radial Scrubber Test report

Skipbreather · 18th August 2006, 15:24

Quote: (Originally Posted by dive2dive2000)

I fail to see the advantage of a Radial scrubber in a Meg because of its gas flow direction. BUt with you and Cedrics right ups obviously I am misunderstanding the releavance of gas direction and radial scrubbers, or am I? Please inlighten me

The advantages of radial over axial are indeed debatable, but in the Meg there is one advantage that is straightforward and hard to argue with: significant additional volume for ‘sorb.

The axial requires a spacer on the bottom to let the breathing gas flow around its end. Space is also needed for the spring/ bar mechanism that maintains pressure on the ‘sorb pack. With the radial, all that space can be dedicated to more ‘sorb. In the case of the homebuilt radial scrubber I designed & built for my Meg, the volume is a whopping 40% more. Form follows function and I’m sure the ISC design is in the same ball park.

Best,
Ken

Ben Field · 18th August 2006, 15:34

Pure speculation....

If Meg + radial scrubber = more sorb hence longer rating (very long according to Cedric's tests)

How about... Mini-meg + Mini Radial scrubber = longer rating than normal meg with normal scrubber?

Result- Smalller rebreather's for all?

Just Friday afternoon musing....

webhead · 18th August 2006, 15:46

I'm with you Ben. Seems like everyone wants a bigger/badder rebreather. No one is really going the other way.

I would love to have to wear 15 lbs of lead to get down. That can be taken off and would leave you with a rig that is lighter than OC gear and really make the rest of the boat jealous and my back happy when loading the car.

Skipbreather · 18th August 2006, 18:26

Quote: (Originally Posted by Ben Field)

Pure speculation....

If Meg + radial scrubber = more sorb hence longer rating (very long according to Cedric's tests)

How about... Mini-meg + Mini Radial scrubber = longer rating than normal meg with normal scrubber?

Result- Smalller rebreather's for all?

Just Friday afternoon musing....

Ummmmm........

Something like this??

mverick · 18th August 2006, 20:28

That was exactly what I was thinking when I read his post.

And, just think with Hammerhead electronics how small that could be.. No Battery packs or computer in there.

Quote: (Originally Posted by Skipbreather)

Ummmmm........

Something like this??

diverklondike · 18th August 2006, 20:32

Quote: (Originally Posted by mverick)

That was exactly what I was thinking when I read his post.

And, just think with Hammerhead electronics how small that could be.. No Battery packs or computer in there.

what a thought....

Dive Safe

Mark

viscya · 19th August 2006, 01:38

I'm sorry guys, but how small do you want that thing? As it is, it's 6" too short for me. Make it smaller, and I'll have to strap it onto my hood. I'd rather have a tall thin unit that is hydrodynamic than a short hump on my back. Call me Igor.

rogeringebo · 19th August 2006, 07:18

Quote: (Originally Posted by viscya)

I'm sorry guys, but how small do you want that thing? As it is, it's 6" too short for me. Make it smaller, and I'll have to strap it onto my hood. I'd rather have a tall thin unit that is hydrodynamic than a short hump on my back. Call me Igor.

He he

!
Want small?...Look at the Pelagian.....
3.4 kg of lime with explorer scrubber and superlight
/Rodge

Ben Field · 19th August 2006, 10:33

Quote: (Originally Posted by viscya)

I'm sorry guys, but how small do you want that thing? As it is, it's 6" too short for me. Make it smaller, and I'll have to strap it onto my hood. I'd rather have a tall thin unit that is hydrodynamic than a short hump on my back. Call me Igor.

Smal enough to wear two on your back,
Small enough to wear it sideslung with its tanks and lungs as a BOB,
Small enough to take it caving in sidemount territory,
Small enough to carry as hand luggage even now,
Small enough so you can shore dive after hiking 5miles from the car,
Small enough so it looks really tiny and cool :-)

Making stuff smaller opens up lots of potential, best of all it'd surely be lighter for the same duration, something bad back suffers will be attracted by!

Agreed that kitting up becomes a problem but to be honest unless it causes a problem underwater I'm willing to overlook onland/boat difficulties, so long as things perform in their chosen enviroment as they should.

Very interesting thread.... now, how much is a Meg

mverick · 19th August 2006, 16:37

Quote: (Originally Posted by viscya)

I'm sorry guys, but how small do you want that thing? As it is, it's 6" too short for me. Make it smaller, and I'll have to strap it onto my hood. I'd rather have a tall thin unit that is hydrodynamic than a short hump on my back. Call me Igor.

Use a dual unit in same can. Cut bottom off and have an electronics pack in there with another scrubber. Problem would be hose routing. But, It would be an all in one Rebreather and Bail Out Breather. Use a single counter lung and a Joker style DMV. For Bailout only. So, scrubber could be small one with the Big Scrubber in the top. Hammerhead so a lot more room in the can. Might have to be a little longer. But, Sweet set up for long dives. Maybe a spair air can for the O2. DIL plugged in...

changing out 5 or 6 O2 sensors would be a pain though...

Or, turn the whole thing sideways ala Optima... Tanks underneath.. Slim it down considerably....

I can dream can't I....LOL

18th August 2006, 15:24	#21 (permalink)
Skipbreather Reads the fine print Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet MK 15.X Home Build Join Date: Mar 2005 Location: Chicago, Illinois, USA Posts: 584	Re: Meg Radial Scrubber Test report Quote: (Originally Posted by dive2dive2000) I fail to see the advantage of a Radial scrubber in a Meg because of its gas flow direction. BUt with you and Cedrics right ups obviously I am misunderstanding the releavance of gas direction and radial scrubbers, or am I? Please inlighten me The advantages of radial over axial are indeed debatable, but in the Meg there is one advantage that is straightforward and hard to argue with: significant additional volume for ‘sorb. The axial requires a spacer on the bottom to let the breathing gas flow around its end. Space is also needed for the spring/ bar mechanism that maintains pressure on the ‘sorb pack. With the radial, all that space can be dedicated to more ‘sorb. In the case of the homebuilt radial scrubber I designed & built for my Meg, the volume is a whopping 40% more. Form follows function and I’m sure the ISC design is in the same ball park. Best, Ken
(Offline)

18th August 2006, 15:34	#22 (permalink)
Ben Field CK+Shearwater Current Rebreather/s: Classic Kiss Other Rebreather/s: Sport Kiss Join Date: Aug 2005 Location: London, England Posts: 1,775	Re: Meg Radial Scrubber Test report Pure speculation.... If Meg + radial scrubber = more sorb hence longer rating (very long according to Cedric's tests) How about... Mini-meg + Mini Radial scrubber = longer rating than normal meg with normal scrubber? Result- Smalller rebreather's for all? Just Friday afternoon musing.... __________________ Know your PPO2, Pre-breath, Use checklists, Validate cells at 6mtrs, Use pure O2 at or near surface, Use a BOV, Don't dive Solo, Change Slime and Cells as recommended by Manufacturer and RTFM! Beware Fridge Suck! www.hugsac.org.uk
(Offline)

18th August 2006, 15:46	#23 (permalink)
webhead Earning the green stuff.. Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Megalodon Join Date: Mar 2006 Location: East central Florida Posts: 284	Re: Meg Radial Scrubber Test report I'm with you Ben. Seems like everyone wants a bigger/badder rebreather. No one is really going the other way. I would love to have to wear 15 lbs of lead to get down. That can be taken off and would leave you with a rig that is lighter than OC gear and really make the rest of the boat jealous and my back happy when loading the car. __________________ "These are not the droids you are looking for.... move along" - Obi-Wan Kenobi
(Offline)

18th August 2006, 20:28	#25 (permalink)
mverick ScubaPimp Current Rebreather/s: Megalodon Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Aug 2005 Posts: 555	Re: Meg Radial Scrubber Test report That was exactly what I was thinking when I read his post. And, just think with Hammerhead electronics how small that could be.. No Battery packs or computer in there. Quote: (Originally Posted by Skipbreather) Ummmmm........ Something like this??
(Offline)

18th August 2006, 20:32	#26 (permalink)
diverklondike RBW Member Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Oct 2005 Location: Delaware, USA Posts: 1,714	Re: Meg Radial Scrubber Test report Quote: (Originally Posted by mverick) That was exactly what I was thinking when I read his post. And, just think with Hammerhead electronics how small that could be.. No Battery packs or computer in there. what a thought.... Dive Safe Mark
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19th August 2006, 01:38	#27 (permalink)
viscya Wrecking Crew Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Oct 2005 Location: Marlton New Jersey Posts: 138	Re: Meg Radial Scrubber Test report I'm sorry guys, but how small do you want that thing? As it is, it's 6" too short for me. Make it smaller, and I'll have to strap it onto my hood. I'd rather have a tall thin unit that is hydrodynamic than a short hump on my back. Call me Igor. __________________ "There is nothing majestic or dignified about being left to silently rot and collapse under heaps of old fishing net forgotten and unappreciated in dark and unvisited waters." DrMike
(Offline)

19th August 2006, 10:33	#29 (permalink)
Ben Field CK+Shearwater Current Rebreather/s: Classic Kiss Other Rebreather/s: Sport Kiss Join Date: Aug 2005 Location: London, England Posts: 1,775	Re: Meg Radial Scrubber Test report Quote: (Originally Posted by viscya) I'm sorry guys, but how small do you want that thing? As it is, it's 6" too short for me. Make it smaller, and I'll have to strap it onto my hood. I'd rather have a tall thin unit that is hydrodynamic than a short hump on my back. Call me Igor. Smal enough to wear two on your back, Small enough to wear it sideslung with its tanks and lungs as a BOB, Small enough to take it caving in sidemount territory, Small enough to carry as hand luggage even now, Small enough so you can shore dive after hiking 5miles from the car, Small enough so it looks really tiny and cool :-) Making stuff smaller opens up lots of potential, best of all it'd surely be lighter for the same duration, something bad back suffers will be attracted by! Agreed that kitting up becomes a problem but to be honest unless it causes a problem underwater I'm willing to overlook onland/boat difficulties, so long as things perform in their chosen enviroment as they should. Very interesting thread.... now, how much is a Meg __________________ Know your PPO2, Pre-breath, Use checklists, Validate cells at 6mtrs, Use pure O2 at or near surface, Use a BOV, Don't dive Solo, Change Slime and Cells as recommended by Manufacturer and RTFM! Beware Fridge Suck! www.hugsac.org.uk
(Offline)

19th August 2006, 16:37	#30 (permalink)
mverick ScubaPimp Current Rebreather/s: Megalodon Other CCR Home Build Other Rebreather/s: Other CCR Home Build Join Date: Aug 2005 Posts: 555	Re: Meg Radial Scrubber Test report Quote: (Originally Posted by viscya) I'm sorry guys, but how small do you want that thing? As it is, it's 6" too short for me. Make it smaller, and I'll have to strap it onto my hood. I'd rather have a tall thin unit that is hydrodynamic than a short hump on my back. Call me Igor. Use a dual unit in same can. Cut bottom off and have an electronics pack in there with another scrubber. Problem would be hose routing. But, It would be an all in one Rebreather and Bail Out Breather. Use a single counter lung and a Joker style DMV. For Bailout only. So, scrubber could be small one with the Big Scrubber in the top. Hammerhead so a lot more room in the can. Might have to be a little longer. But, Sweet set up for long dives. Maybe a spair air can for the O2. DIL plugged in... changing out 5 or 6 O2 sensors would be a pain though... Or, turn the whole thing sideways ala Optima... Tanks underneath.. Slim it down considerably.... I can dream can't I....LOL
(Offline)

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