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bigman241
06-05-2010, 22:19
Can someone tell me the bouyancy numbers for a 1982 1983, 1992, 2004 luxfer al80 tank. Not sure if year matters so I gave them just in case. I need to know both full and empty so I can figure the difference when I go with steel hp130s from ST

comet24
06-05-2010, 22:55
Luxfer 80's are 4.4 lb's positive when empty and -1.4 negative when full. These numbers are with a valve.

A hp PST steel 130 will be negative -1 and negative -10.5 respectively.

Straegen
06-05-2010, 23:11
Can't help you with the year but here is one of the most complete lists of modern tanks I know of:

http://www.huronscuba.com/equipment/scubaCylinderSpecification.html

bigman241
06-06-2010, 07:47
so when going from the al80 to the steel130 I would drop about 5.4 pounds right?
Luxfer 80's are 4.4 lb's positive when empty and -1.4 negative when full. These numbers are with a valve.

A hp PST steel 130 will be negative -1 and negative -10.5 respectively.

in_cavediver
06-06-2010, 09:34
so when going from the al80 to the steel130 I would drop about 5.4 pounds right?
Luxfer 80's are 4.4 lb's positive when empty and -1.4 negative when full. These numbers are with a valve.

A hp PST steel 130 will be negative -1 and negative -10.5 respectively.

Yep. You account for the empty weights. With the AL 80, you carry 4.4lbs of lead. Get rid of the tank, you can drop the 4.4lbs of lead to be neutral. Add a steel 130, its already negative by 1lb so you drop that 1lb of lead to be neutral and in the end, you are dropping 5-6lbs of lead.

bigman241
06-06-2010, 09:52
That is what I thought.
Thanks again in diver. :smiley20:


so when going from the al80 to the steel130 I would drop about 5.4 pounds right?
Luxfer 80's are 4.4 lb's positive when empty and -1.4 negative when full. These numbers are with a valve.

A hp PST steel 130 will be negative -1 and negative -10.5 respectively.

Yep. You account for the empty weights. With the AL 80, you carry 4.4lbs of lead. Get rid of the tank, you can drop the 4.4lbs of lead to be neutral. Add a steel 130, its already negative by 1lb so you drop that 1lb of lead to be neutral and in the end, you are dropping 5-6lbs of lead.

Jack Hammer
06-06-2010, 14:14
Biggie - Look at your tanks model numbers to make sure you are seeing the correct bouyancy characteristics and that all your tanks are the same model. For example, a Luxfer 80 is +4.4# empty, -1.4# full whereas the Luxfer S80 is +2.25# empty and -3.6# full. That's a 2# difference between the two models. When weighted properly that is enough of a difference to make you light toward the end of a dive.

Also note the Worthington hp130 is 1# more negative than the PST E8-130 and 3.5#'s more negative than the Faber FX133. Good info for planning but essential if you end up owning different brands or models of tanks.

bigman241
06-06-2010, 14:19
The plan is to buy this setup next month. HP 130 Dual Tank Setup reviews and discounts, ScubaToys (http://www.scubatoys.com/store/detail.asp?PRODUCT_ID=HP130TwinCylinderSetup)

That way I have two steel tanks for a nice long day of diving and the manifold when I go doubles. it should save me some cash down the road. i will check the al tanks though.
Biggie - Look at your tanks model numbers to make sure you are seeing the correct bouyancy characteristics and that all your tanks are the same model. For example, a Luxfer 80 is +4.4# empty, -1.4# full whereas the Luxfer S80 is +2.25# empty and -3.6# full. That's a 2# difference between the two models. When weighted properly that is enough of a difference to make you light toward the end of a dive.

Also note the Worthington hp130 is 1# more negative than the PST E8-130 and 3.5#'s more negative than the Faber FX133. Good info for planning but essential if you end up owning different brands or models of tanks.

comet24
06-06-2010, 19:42
The plan is to buy this setup next month. HP 130 Dual Tank Setup reviews and discounts, ScubaToys (http://www.scubatoys.com/store/detail.asp?PRODUCT_ID=HP130TwinCylinderSetup)

That way I have two steel tanks for a nice long day of diving and the manifold when I go doubles. it should save me some cash down the road. i will check the al tanks though.
Biggie - Look at your tanks model numbers to make sure you are seeing the correct bouyancy characteristics and that all your tanks are the same model. For example, a Luxfer 80 is +4.4# empty, -1.4# full whereas the Luxfer S80 is +2.25# empty and -3.6# full. That's a 2# difference between the two models. When weighted properly that is enough of a difference to make you light toward the end of a dive.

Also note the Worthington hp130 is 1# more negative than the PST E8-130 and 3.5#'s more negative than the Faber FX133. Good info for planning but essential if you end up owning different brands or models of tanks.

Make sure you get plugs with that setup if your plan is to take them apart and dive them as singles. When you remove the manifold(crossbar) each valve will have a hole your need to plug.

bigman241
06-06-2010, 20:42
I asked in diver about the setup a few days back and he told me about them I figure st should have them when I get ready. Heck 910 with 10% SWeet deal if you ask me.
Thanks buddy

The plan is to buy this setup next month. HP 130 Dual Tank Setup reviews and discounts, ScubaToys (http://www.scubatoys.com/store/detail.asp?PRODUCT_ID=HP130TwinCylinderSetup)

That way I have two steel tanks for a nice long day of diving and the manifold when I go doubles. it should save me some cash down the road. i will check the al tanks though.
Biggie - Look at your tanks model numbers to make sure you are seeing the correct bouyancy characteristics and that all your tanks are the same model. For example, a Luxfer 80 is +4.4# empty, -1.4# full whereas the Luxfer S80 is +2.25# empty and -3.6# full. That's a 2# difference between the two models. When weighted properly that is enough of a difference to make you light toward the end of a dive.

Also note the Worthington hp130 is 1# more negative than the PST E8-130 and 3.5#'s more negative than the Faber FX133. Good info for planning but essential if you end up owning different brands or models of tanks.

Make sure you get plugs with that setup if your plan is to take them apart and dive them as singles. When you remove the manifold(crossbar) each valve will have a hole your need to plug.

Straegen
06-06-2010, 21:41
I asked in diver about the setup a few days back and he told me about them I figure st should have them when I get ready. Heck 910 with 10% SWeet deal if you ask me.

Just an FYI, LeisurePro has HP130s for $410 with free shipping. If you search through Bing, you can get 10% back on that. So around $740 with valves shipped to your door. Hope this link works:

hp steel 3442 - Bing Shopping[CommerceService%20scenario%3d%22sum%22%20docid%3d% 22C6E2A3C3FD35DE7583CC%22%20a%3d%22pa%22]&wf=Commerce&FORM=ENCA1 (http://www.bing.com/shopping/XS-Scuba-Worthington-Cylinders-HP-Steel-3442-psi-Tanks-X8-130-16-0L/search?q=hp%20steel%203442&p1=)

Versus the STs setup which is $864 plus $20. Just putting that out there.

bigman241
06-06-2010, 22:02
With the scuba toys kit I get two steel 130s the diverite dual manifold and the dive rite tank bands for 960 or 864 for a 1090 RETAIL PACKAGE. If you add the bands to the leisure prop deal you end up around the same price or alittle more. Thanks though worth looking at.

Though larry, wade and the rest of the ST gang has been a big help so if I can give my cash to them without spending more or even not to much more I will. Ohh I forgot joe he helped to :spyme::spyme:

I asked in diver about the setup a few days back and he told me about them I figure st should have them when I get ready. Heck 910 with 10% SWeet deal if you ask me.

Just an FYI, LeisurePro has HP130s for $410 with free shipping. If you search through Bing, you can get 10% back on that. So around $740 with valves shipped to your door. Hope this link works:

hp steel 3442 - Bing Shopping[CommerceService%20scenario%3d%22sum%22%20docid%3d% 22C6E2A3C3FD35DE7583CC%22%20a%3d%22pa%22]&wf=Commerce&FORM=ENCA1 (http://www.bing.com/shopping/XS-Scuba-Worthington-Cylinders-HP-Steel-3442-psi-Tanks-X8-130-16-0L/search?q=hp%20steel%203442&p1=)

Versus the STs setup which is $864 plus $20. Just putting that out there.

Jack Hammer
06-06-2010, 22:09
I asked in diver about the setup a few days back and he told me about them I figure st should have them when I get ready. Heck 910 with 10% SWeet deal if you ask me.

Just an FYI, LeisurePro has HP130s for $410 with free shipping. If you search through Bing, you can get 10% back on that. So around $740 with valves shipped to your door. Hope this link works:

hp steel 3442 - Bing Shopping[CommerceService%20scenario%3d%22sum%22%20docid%3d% 22C6E2A3C3FD35DE7583CC%22%20a%3d%22pa%22]&wf=Commerce&FORM=ENCA1 (http://www.bing.com/shopping/XS-Scuba-Worthington-Cylinders-HP-Steel-3442-psi-Tanks-X8-130-16-0L/search?q=hp%20steel%203442&p1=)

Versus the STs setup which is $864 plus $20. Just putting that out there.
Those tanks from LP do not come with a manifold and bands and bolts, which even at discount is an $350 value. The ST setup is still a lower price.

comet24
06-07-2010, 06:04
I asked in diver about the setup a few days back and he told me about them I figure st should have them when I get ready. Heck 910 with 10% SWeet deal if you ask me.

Just an FYI, LeisurePro has HP130s for $410 with free shipping. If you search through Bing, you can get 10% back on that. So around $740 with valves shipped to your door. Hope this link works:

hp steel 3442 - Bing Shopping[CommerceService%20scenario%3d%22sum%22%20docid%3d% 22C6E2A3C3FD35DE7583CC%22%20a%3d%22pa%22]&wf=Commerce&FORM=ENCA1 (http://www.bing.com/shopping/XS-Scuba-Worthington-Cylinders-HP-Steel-3442-psi-Tanks-X8-130-16-0L/search?q=hp%20steel%203442&p1=)

Versus the STs setup which is $864 plus $20. Just putting that out there.

ST price includes bands and a manifold. That's worth over $300.