Weighting with bailout

decoweenie · 14th June 2007, 05:19

Quote: (Originally Posted by Mark Chase)

I use an ali 80 of 50% which is pretty neutral in the water, and a steel 10ltr which is pretty neutral in the water when filled with 18/45 so my tanks dont really assist on the weighting front anyway.

...But both of them will be positively buoyant when close to empty.

If you don't have additional weight to counter for that, you will have difficulties holding your shallow stops in mid-water.

**RichClark** · 14th June 2007, 07:26

Quote: (Originally Posted by Mikel-Deko)

Hi
Do you test your buoyancy with them full or empty?
Mikel

I only counter for one of them being empty. I figure that once the the deep bottle (1st bottle) becomes positively buoyant, I'll send it up my line. I used to do this OC trimix diving and works well for me.

So I'm only really concerned with breathing my 50% down low and buoyancy offset that creates.

Cheers

Rich

viscya · 14th June 2007, 16:17

Somehow the math on this poll seems a little off.

I'm no statistician, but with 128% of the votes counted... Bush may win the election again.

32 74.42%
16 37.21%
0 0%
7 16.28%

Mark Chase · 14th June 2007, 16:50

Quote: (Originally Posted by decoweenie)

...But both of them will be positively buoyant when close to empty.

If you don't have additional weight to counter for that, you will have difficulties holding your shallow stops in mid-water.

The steel 10 I have taken down to 30bar and its fine it just hangs in the water no problem not going up or down.

The Ali 80 is floaty by +2kg but then you add a first stage which weigs in at 1ish KG. I can hold on to it at 6m no problem but empty 80s are a PITA. Hopfully id have a drop tank if i am getting close to emptying the 50 so i can send the empty tin up the line.

I started out with two steels but a steel 10 with 240bar of 50% in weighs a tun and its badly off balance with a 10 of mix on the other hip.

Steel 10 with 240bar of 18/45 floating arse up

Ali80 of 50% 210bar flat on the bottom, no first stages, fresh water.

Ali 80 weighs 2.7lb in fresh water Steel 10 weighs 2.1lb

In use

ATB

Mark

Mikel-Deko · 14th June 2007, 17:14

I would like to know Dave Sutton's system

Thanks

Mikel

View Poll Results: Weighting with bailout
I don't consider bailout as weight	42	75.00%
I do consider bailout as weight	19	33.93%
Didn't know you couldn't consider bailout as weight	0	0%
I would never take off my bailout underwater	7	12.50%
Multiple Choice Poll. Voters: 56. You may not vote on this poll

14th June 2007, 05:19	#11 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Re: Weighting with bailout Quote: (Originally Posted by Mark Chase) I use an ali 80 of 50% which is pretty neutral in the water, and a steel 10ltr which is pretty neutral in the water when filled with 18/45 so my tanks dont really assist on the weighting front anyway. ...But both of them will be positively buoyant when close to empty. If you don't have additional weight to counter for that, you will have difficulties holding your shallow stops in mid-water. __________________ "...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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14th June 2007, 07:26	#12 (permalink)
RichClark Classic KISS No. 226 Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Mar 2005 Location: Hove, UK Posts: 779	Re: Weighting with bailout Quote: (Originally Posted by Mikel-Deko) Hi Do you test your buoyancy with them full or empty? Mikel I only counter for one of them being empty. I figure that once the the deep bottle (1st bottle) becomes positively buoyant, I'll send it up my line. I used to do this OC trimix diving and works well for me. So I'm only really concerned with breathing my 50% down low and buoyancy offset that creates. Cheers Rich __________________ The more I learn about women, the more I want to go diving... just don't tell my wife I said that To taste something a little different, try http://www.thechillikitchen.co.uk
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14th June 2007, 16:17	#13 (permalink)
viscya Wrecking Crew Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Oct 2005 Location: Marlton New Jersey Posts: 140	Re: Weighting with bailout Somehow the math on this poll seems a little off. I'm no statistician, but with 128% of the votes counted... Bush may win the election again. 32 74.42% 16 37.21% 0 0% 7 16.28% __________________ "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
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14th June 2007, 16:50	#14 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,693	Re: Weighting with bailout Quote: (Originally Posted by decoweenie) ...But both of them will be positively buoyant when close to empty. If you don't have additional weight to counter for that, you will have difficulties holding your shallow stops in mid-water. The steel 10 I have taken down to 30bar and its fine it just hangs in the water no problem not going up or down. The Ali 80 is floaty by +2kg but then you add a first stage which weigs in at 1ish KG. I can hold on to it at 6m no problem but empty 80s are a PITA. Hopfully id have a drop tank if i am getting close to emptying the 50 so i can send the empty tin up the line. I started out with two steels but a steel 10 with 240bar of 50% in weighs a tun and its badly off balance with a 10 of mix on the other hip. Steel 10 with 240bar of 18/45 floating arse up Ali80 of 50% 210bar flat on the bottom, no first stages, fresh water. Ali 80 weighs 2.7lb in fresh water Steel 10 weighs 2.1lb In use ATB Mark __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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14th June 2007, 17:14	#15 (permalink)
Mikel-Deko Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Other CCR Join Date: Jul 2005 Location: Basque Country -Sp- Posts: 448	Re: Weighting with bailout I would like to know Dave Sutton's system Thanks Mikel __________________ Mikel-Deko Basque Country www.olatu.net "DIR is the nanny state for divers who cannot think on their own" Ron Micjan
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