Which rebreather has best trim

Wol · 16th May 2008, 08:05

I would like to start a discussion regarding experiences of which rebreathers have the best trim and modifications used to enhance trim and general underwater comfort.

Personally I use an inspo in a DT box. I have been suffering back ache recently. I use 2 x backmounted 7ltr - 1 dil and 1 50% nitrox with a 2 or 3 ltr o2 mounted underneath.

I have weighted the unit so I have resonable position in water and also mover the backplate lower ie to help offset the lungs. Still not perfect - I am thinking of turning the 7s the right way up to help balance me better - with the O2 mounted on the side.

Any views

grazie42 · 16th May 2008, 08:36

It´s the diver not the rebreather?

I have a 2kg lead-weight on top of my rEvo and together with 3kg on the weightbelt that works for me...

ymmv

Gary Graham · 16th May 2008, 08:38

Quote: (Originally Posted by Wol)

Personally I use an inspo in a DT box. I have been suffering back ache recently. I use 2 x backmounted 7ltr - 1 dil and 1 50% nitrox with a 2 or 3 ltr o2 mounted underneath.

Is using 7 litre cylinders the cause of the problem, or at least adding to it?

Just an observation.

Gary

lizardland · 16th May 2008, 08:50

I find the short-arsed KISS case gives me horrendous backache on long dives or when using a scooter. Not too mention nearly dislocating a few joints when trying to get in it on a boat bench.

I know, I know by a Narkedat90 stand...

**PhilSiswick** · 16th May 2008, 09:03

Quote: (Originally Posted by lizardland)

I find the short-arsed KISS case gives me horrendous backache on long dives or when using a scooter. Not too mention nearly dislocating a few joints when trying to get in it on a boat bench.

I know, I know by a Narkedat90 stand...

I found the Inspo uncomfortable in standard trim (though admittedly I probably didn't dive it long enough to get my weighting spot on). It always pushed down on the small of my back (I'm 6'4" tall).

I now have, for various reasons related to my 5' tall wife, an Evo on John's prototype Narked@90 Evo stand. Although it is much the same height as the Inspo, because it is square at the bottom and because the weight of the Evo is higher up my back, it trims beautifully and pushes down on my backside. I doubt it could be much better.

Cheers,

**nigelh** · 16th May 2008, 09:56

I carry all my weight other than stages on the inspo case so there is no twist on me.
The stages are steel so they hang down so again no twist.
This is trimmed out to lie horizontally on a stop.

I suspect if I had a weightbelt so the bottom of the case pulled up to compensate for the belt pulling down my back-acheless situation might change.

se2schul · 16th May 2008, 12:25

Quote: (Originally Posted by Wol)

which rebreathers have the best trim

RB80

vlada · 16th May 2008, 13:25

Funny enough, i agree

That thing had a sweet trim.

I have to change a lot of things on a Boris between cold and warm water to get it to trim right.

Quote: (Originally Posted by se2schul)

RB80

jiseson · 16th May 2008, 13:45

easy! DSIX/O2PTIMA!

curt · 16th May 2008, 14:03

The Abyss and Stingray were designed with trim in mind. They are beautifully streamlined, and need *NO* trim weights.

cheers...

16th May 2008, 08:05	#1 (permalink)
Wol New Member Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Oct 2007 Location: UK Posts: 23	Which rebreather has best trim I would like to start a discussion regarding experiences of which rebreathers have the best trim and modifications used to enhance trim and general underwater comfort. Personally I use an inspo in a DT box. I have been suffering back ache recently. I use 2 x backmounted 7ltr - 1 dil and 1 50% nitrox with a 2 or 3 ltr o2 mounted underneath. I have weighted the unit so I have resonable position in water and also mover the backplate lower ie to help offset the lungs. Still not perfect - I am thinking of turning the 7s the right way up to help balance me better - with the O2 mounted on the side. Any views
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16th May 2008, 08:36	#2 (permalink)
grazie42 Eager Newbie! Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Jun 2005 Location: Sweden Posts: 27	Re: Which rebreather has best trim It´s the diver not the rebreather? I have a 2kg lead-weight on top of my rEvo and together with 3kg on the weightbelt that works for me... ymmv __________________ Minds are like parashutes- They only function when open
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16th May 2008, 08:38	#3 (permalink)
Gary Graham New Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Vision Join Date: Mar 2007 Location: St Helens, UK Posts: 83	Re: Which rebreather has best trim Quote: (Originally Posted by Wol) Personally I use an inspo in a DT box. I have been suffering back ache recently. I use 2 x backmounted 7ltr - 1 dil and 1 50% nitrox with a 2 or 3 ltr o2 mounted underneath. Is using 7 litre cylinders the cause of the problem, or at least adding to it? Just an observation. Gary __________________ CK#103
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16th May 2008, 08:50	#4 (permalink)
lizardland Yak Current Rebreather/s: Classic Kiss Ray Home Build Other Rebreather/s: Ray Home Build Join Date: Mar 2005 Location: North... Posts: 1,138	Re: Which rebreather has best trim I find the short-arsed KISS case gives me horrendous backache on long dives or when using a scooter. Not too mention nearly dislocating a few joints when trying to get in it on a boat bench. I know, I know by a Narkedat90 stand... __________________ Can you imagine drifting along in the sea with your mouth open and a load of f***ing plankton going in? You'd like it, would you? www.westons-cider.co.uk Azerbaijani Association of Technical Divers Publicity Officer and Goat Wrangler
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16th May 2008, 09:03	#5 (permalink)
PhilSiswick WSKD 0001 Current Rebreather/s: Evolution Other Rebreather/s: Inspiration Vision Join Date: Apr 2006 Location: Oxford, UK Posts: 880	Re: Which rebreather has best trim Quote: (Originally Posted by lizardland) I find the short-arsed KISS case gives me horrendous backache on long dives or when using a scooter. Not too mention nearly dislocating a few joints when trying to get in it on a boat bench. I know, I know by a Narkedat90 stand... I found the Inspo uncomfortable in standard trim (though admittedly I probably didn't dive it long enough to get my weighting spot on). It always pushed down on the small of my back (I'm 6'4" tall). I now have, for various reasons related to my 5' tall wife, an Evo on John's prototype Narked@90 Evo stand. Although it is much the same height as the Inspo, because it is square at the bottom and because the weight of the Evo is higher up my back, it trims beautifully and pushes down on my backside. I doubt it could be much better. Cheers, __________________ Phil No comment on open circuit... it's an evolutionary dead end not really worth discussing here. Dave Sutton, 2007 I have always felt that the dive I am on is not nearly important as the dives I plan to be on the rest of my life. Tom Rose, 2007 www.hugsac.org.uk
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16th May 2008, 09:56	#6 (permalink)
nigelh New Member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Mar 2005 Location: Brighton, Sussex, UK Posts: 784	Re: Which rebreather has best trim I carry all my weight other than stages on the inspo case so there is no twist on me. The stages are steel so they hang down so again no twist. This is trimmed out to lie horizontally on a stop. I suspect if I had a weightbelt so the bottom of the case pulled up to compensate for the belt pulling down my back-acheless situation might change. __________________ nigelh
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16th May 2008, 12:25	#7 (permalink)
se2schul New Member Current Rebreather/s: RB80 / Clone Other Rebreather/s: RB80 / Clone Join Date: Oct 2007 Location: Ottawa Posts: 62	Re: Which rebreather has best trim Quote: (Originally Posted by Wol) which rebreathers have the best trim RB80
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16th May 2008, 13:25	#8 (permalink)
vlada Diver with a camera Current Rebreather/s: Ouroboros Other Rebreather/s: Join Date: Apr 2005 Location: Toronto Posts: 56	Re: Which rebreather has best trim Funny enough, i agree That thing had a sweet trim. I have to change a lot of things on a Boris between cold and warm water to get it to trim right. Quote: (Originally Posted by se2schul) RB80 __________________ Vlada www.wrecksandreefs.com
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16th May 2008, 13:45	#9 (permalink)
jiseson DSIX/O2PTIMA Current Rebreather/s: Optima Other Rebreather/s: Join Date: Jun 2006 Location: long island,ny Posts: 419	Re: Which rebreather has best trim easy! DSIX/O2PTIMA! __________________ *Jonathan D Iseson*
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16th May 2008, 14:03	#10 (permalink)
curt New Member Current Rebreather/s: Other CCR Dolphin Other Rebreather/s: Not Bought Yet Inspiration Classic Classic Kiss MK 15.X Other CCR Dolphin Join Date: Jul 2006 Location: Rockville, MD USA Posts: 81	Re: Which rebreather has best trim The Abyss and Stingray were designed with trim in mind. They are beautifully streamlined, and need NO trim weights. cheers... __________________ Curt Harpold US Representative Rebreathers Australia http://rebreathers.com.au/
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