Large Bore EAC

luish.felice · 5th July 2011, 03:37

Have anyone tried the large bore EAC?

I notice a material reduction, does it have any affection to the WOB or scrubber duration?

EAC · 5th July 2011, 11:39

Quote: (Originally Posted by luish.felice)

Have anyone tried the large bore EAC?

I notice a material reduction, does it have any affection to the WOB or scrubber duration?

i received some- but returned them-worried about bypass

Mr_C · 5th July 2011, 13:58

I believe they are made for units other than Optimas (like the Titian). We had a choice between both styles when diving with Dive Tech in the Caymans. You do not want to use the large bore with an Optima.

luish.felice · 5th July 2011, 16:44

I saw a video of Lamar about a new adapter for this large bore EAC. What worries me is the WOB or the duration. Honestly I feel better with the normal EAC, but according to the video, the small bore are no longer in production.

YouTube - ‪Rebreather Diving: O2ptima Large Bore Cartridge by Dive Rite‬‏

Mike Young · 5th July 2011, 22:21

The WOB with EAC is almost immeasurable so the increase would be hard to measure. The duration loss would only be a few minutes.

Mr_C · 5th July 2011, 23:40

Quote: (Originally Posted by luish.felice)

I saw a video of Lamar about a new adapter for this large bore EAC. What worries me is the WOB or the duration. Honestly I feel better with the normal EAC, but according to the video, the small bore are no longer in production.

Interesting and good information. I had not seen that on their website or blog.

**kwinter** · 6th July 2011, 01:42

I talked with Lamar about it a few months ago. It seems the very inner core was really not used because the flow never got to such a tight wind. The large bore is supposed to be easier (ie. cheaper) to manufacture and the loss of material is insignificant. We talked about the need for a new adapter and grommet and he said it was in the works. I hadn't seen that video or heard more about it. Thanks for that.

Ken

P.S. I guess the new plug on the outside end takes the place of the grommet on the inside. But does anyone have info about the plug?

EAC · 6th July 2011, 17:40

Quote: (Originally Posted by kwinter)

I talked with Lamar about it a few months ago. It seems the very inner core was really not used because the flow never got to such a tight wind. The large bore is supposed to be easier (ie. cheaper) to manufacture and the loss of material is insignificant. We talked about the need for a new adapter and grommet and he said it was in the works. I hadn't seen that video or heard more about it. Thanks for that.

Ken

P.S. I guess the new plug on the outside end takes the place of the grommet on the inside. But does anyone have info about the plug?

i use a grommet top and bottom

EAC · 6th July 2011, 17:41

Quote: (Originally Posted by Mike Young)

The WOB with EAC is almost immeasurable so the increase would be hard to measure. The duration loss would only be a few minutes.

would like to see Micropore test results re duration

FergusButler · 19th July 2011, 18:52

July 18th, 2011

Micropore ExtendAir Large Bore Rebreather Cartridge

The demand for Micropore ExtendAir rebreather cartridges is growing and Micropore has automated production to keep up with demand. The new EAC has a larger core for the new production process. The larger core represents approximately 5% reduction in surface area and a slight increase on work of breating, however neither affect the diver. I have already tested it in the O2ptima without any change in performance. The safety margins built into the EAC more than cover the 5% reduction in surface area so no change in usage for divers, but the computers say it is ever so slightly different. Micropore is going to release all the new test data shortly and we will have it. We have a new plug available for the premix rod so you are ready to use either style of EAC.
DRT-8-PLUG, MSRP $15.00

5th July 2011, 03:37	#1 (permalink)
luish.felice RBW Member DiveRite O2ptimaFX Join Date: Oct 2007 Location: Venezuela Posts: 93	Large Bore EAC Have anyone tried the large bore EAC? I notice a material reduction, does it have any affection to the WOB or scrubber duration?
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5th July 2011, 11:39	#2 (permalink)
EAC RBW Member optima Inspiration Join Date: Mar 2011 Location: Ft Lauderdale vicinity Posts: 87	Re: Large Bore EAC Quote: (Originally Posted by luish.felice) Have anyone tried the large bore EAC? I notice a material reduction, does it have any affection to the WOB or scrubber duration? i received some- but returned them-worried about bypass
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5th July 2011, 13:58	#3 (permalink)
Mr_C CEO rEvo Micro III rRevo Mini III, Optima Join Date: Jan 2009 Location: Richmond, VA, USA Posts: 45	Re: Large Bore EAC I believe they are made for units other than Optimas (like the Titian). We had a choice between both styles when diving with Dive Tech in the Caymans. You do not want to use the large bore with an Optima.
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5th July 2011, 22:21	#5 (permalink)
Mike Young RebreatherWorld Sponsor Super KISS Join Date: Dec 2009 Location: Arkansas Posts: 120	Re: Large Bore EAC The WOB with EAC is almost immeasurable so the increase would be hard to measure. The duration loss would only be a few minutes.
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5th July 2011, 23:40	#6 (permalink)
Mr_C CEO rEvo Micro III rRevo Mini III, Optima Join Date: Jan 2009 Location: Richmond, VA, USA Posts: 45	Re: Large Bore EAC Quote: (Originally Posted by luish.felice) I saw a video of Lamar about a new adapter for this large bore EAC. What worries me is the WOB or the duration. Honestly I feel better with the normal EAC, but according to the video, the small bore are no longer in production. Interesting and good information. I had not seen that on their website or blog.
(Offline)

6th July 2011, 01:42	#7 (permalink)
kwinter Down to no good Optima GEM Join Date: Sep 2005 Location: NJ - USA Posts: 1,514	Re: Large Bore EAC I talked with Lamar about it a few months ago. It seems the very inner core was really not used because the flow never got to such a tight wind. The large bore is supposed to be easier (ie. cheaper) to manufacture and the loss of material is insignificant. We talked about the need for a new adapter and grommet and he said it was in the works. I hadn't seen that video or heard more about it. Thanks for that. Ken P.S. I guess the new plug on the outside end takes the place of the grommet on the inside. But does anyone have info about the plug? Last edited by kwinter; 6th July 2011 at 01:47..
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6th July 2011, 17:40	#8 (permalink)
EAC RBW Member optima Inspiration Join Date: Mar 2011 Location: Ft Lauderdale vicinity Posts: 87	Re: Large Bore EAC Quote: (Originally Posted by kwinter) I talked with Lamar about it a few months ago. It seems the very inner core was really not used because the flow never got to such a tight wind. The large bore is supposed to be easier (ie. cheaper) to manufacture and the loss of material is insignificant. We talked about the need for a new adapter and grommet and he said it was in the works. I hadn't seen that video or heard more about it. Thanks for that. Ken P.S. I guess the new plug on the outside end takes the place of the grommet on the inside. But does anyone have info about the plug? i use a grommet top and bottom
(Offline)

6th July 2011, 17:41	#9 (permalink)
EAC RBW Member optima Inspiration Join Date: Mar 2011 Location: Ft Lauderdale vicinity Posts: 87	Re: Large Bore EAC Quote: (Originally Posted by Mike Young) The WOB with EAC is almost immeasurable so the increase would be hard to measure. The duration loss would only be a few minutes. would like to see Micropore test results re duration
(Offline)

19th July 2011, 18:52	#10 (permalink)
FergusButler RBW Member Optima Join Date: Oct 2007 Location: Baltimore MD USA Posts: 247	Re: Large Bore EAC July 18th, 2011 Micropore ExtendAir Large Bore Rebreather Cartridge The demand for Micropore ExtendAir rebreather cartridges is growing and Micropore has automated production to keep up with demand. The new EAC has a larger core for the new production process. The larger core represents approximately 5% reduction in surface area and a slight increase on work of breating, however neither affect the diver. I have already tested it in the O2ptima without any change in performance. The safety margins built into the EAC more than cover the 5% reduction in surface area so no change in usage for divers, but the computers say it is ever so slightly different. Micropore is going to release all the new test data shortly and we will have it. We have a new plug available for the premix rod so you are ready to use either style of EAC. DRT-8-PLUG, MSRP $15.00
(Offline)

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