Al 30 or Al 40

[mk706]

Luxfer Al40s are bear most of the weight at the neck. They trim out great. Catalina's are awful.

XS Scuba distributes Luxfers. Seems like most LDS have access to XS Scuba.

 

[50Fathom]

Luxfer Al40s are bear most of the weight at the neck. They trim out great. Catalina's are awful.

XS Scuba distributes Luxfers. Seems like most LDS have access to XS Scuba.

I'll have to look into our catalogs again because we're an XS dealer and the catalog was all Catalina last time I looked, though I could be mistaken.

 

[Kern]

They come out of the box O2 ready (80% @ 3400 and 100% @ 2400). What I wanted to know is what else needed to be done so one could be used for 100% @ 3000psi...are we talking parts, cleaning, etc

If a reg is cleaned to O₂ service standards, has O₂ compatible "O" rings & lube, it is safe for O₂ use to 3000psi. Whether the O₂ fill station can/will fill to this pressure is another matter.

 

[Kern]

I've heard the same about the Catalina and Luxfer 80s.

Anyone know if the 40s ride similar or different?

This chart indicates similar measurements for the outside and similar weight, but radically different buoyancy from the two manufacturers.

Scuba Cylinder Specification Chart from Huron Scuba, Ann Arbor Michigan

From the table.

Luxfer 40; Buoyancy- empty 2.2lb; full -0.8lb: swing 3.0lb
Catalina 40; Buoyancy- empty 1.7lb; full -2.6lb: swing 4.3lb

As the swing is due to the gas used, these numbers don't add up.

I'v found Catalina 40's to be moderately heavier at the start of a dive to Luxfer 40's. I don't find the difference to be that big a deal

 

[50Fathom]

From the table.

Luxfer 40; Buoyancy- empty 2.2lb; full -0.8lb: swing 3.0lb
Catalina 40; Buoyancy- empty 1.7lb; full -2.6lb: swing 4.3lb

These numbers don't add up.

Exactly. Something stinks.

 

[rx7diver]

Catalina reports the buoyancy characteristics of its scuba cylinders here: Catalina Cylinders.

 

[mk706]

http://www.xsscuba.com/tank_lux_distribution.html

 

[50Fathom]

XS Scuba Luxfer Luxfer Aluminum Scuba Cylinders

I just got excited. Gonna be calling them today.

 

[Medicdiver0125]

So on to the next question. How long should my primary hose be on my AL 40? I was thinking 32in.

 

[Tug]

So on to the next question. How long should my primary hose be on my AL 40? I was thinking 32in.

I use a 40" hose on all my stage and deco regs. That length routes nicely behind my head.