O2 Cylinder Sizes - What are people using these days? [Archive]

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Bob Kuykendall

June 26th 12, 04:36 PM

I'm looking to develop a standard O2 cylinder installation for the
HP-24 sailplane kit, and I'm curious what size cylinders people
generally have installed these days.

These days a lot of folks seem to be using EDS systems which seem to
offer very good efficiency at turning pressurized gas into blood
oxygen. So less pressurized gas is needed than back in the old days
when we were all using surplus A8A regulators.

This webpage lists what seem to be the the standard O2 cylinder sizes
these days:

http://www.mhoxygen.com/index.php?option=com_content&view=article&id=52&Itemid=50#pdf

The cylinder sizes I generally see referred to in forums like these
are these medical sizes:

D-size: 4.4 in/11.1 cm diameter, 18.7 in/47.4 cm length, 14.7 ft^3
volume
JD-size: 5.3 in/13.3 cm diameter, 18.1 in/46.0 cm length, 22.8 ft^3
volume
E-size: 4.4 in/11.1 cm diameter, 27.0 in/68.6 cm length, 24.1 ft^3
volume

The information I'm looking to collect is, what size cylinder do you
actually have installed, and does it generally meet your needs?

Thanks, Bob K.
http://www.hpaircraft.com/hp-24

Evan Ludeman[_4_]

June 26th 12, 04:47 PM

On Jun 26, 11:36*am, Bob Kuykendall > wrote:
> I'm looking to develop a standard O2 cylinder installation for the
> HP-24 sailplane kit, and I'm curious what size cylinders people
> generally have installed these days.
>
> These days a lot of folks seem to be using EDS systems which seem to
> offer very good efficiency at turning *pressurized gas into blood
> oxygen. So less pressurized gas is needed than back in the old days
> when we were all using surplus A8A regulators.
>
> This webpage lists what seem to be the the standard O2 cylinder sizes
> these days:
>
> http://www.mhoxygen.com/index.php?option=com_content&view=article&id=...
>
> The cylinder sizes I generally see referred to in forums like these
> are these medical sizes:
>
> D-size: 4.4 in/11.1 cm diameter, 18.7 in/47.4 cm length, 14.7 ft^3
> volume
> JD-size: 5.3 in/13.3 cm diameter, 18.1 in/46.0 cm length, 22.8 ft^3
> volume
> E-size: 4.4 in/11.1 cm diameter, 27.0 in/68.6 cm length, 24.1 ft^3
> volume
>
> The information I'm looking to collect is, what size cylinder do you
> actually have installed, and does it generally meet your needs?
>
> Thanks, Bob K.http://www.hpaircraft.com/hp-24

But the great thing about a bigger bottle is that you get decent
capacity even when the filling station is a little low. Always seems
to happen at some point at wave camp. Very happy that my '20 takes an
E-size bottle, even if it is the old, awkward, heavy steel E-size.

Best -- imo -- would be provision to install either D or E size
aluminum bottles. These are common and inexpensive.

Evan Ludeman / T8

Mike C

June 26th 12, 05:12 PM

Bill D

June 26th 12, 05:13 PM

On Jun 26, 9:36*am, Bob Kuykendall > wrote:
> I'm looking to develop a standard O2 cylinder installation for the
> HP-24 sailplane kit, and I'm curious what size cylinders people
> generally have installed these days.
>
> These days a lot of folks seem to be using EDS systems which seem to
> offer very good efficiency at turning *pressurized gas into blood
> oxygen. So less pressurized gas is needed than back in the old days
> when we were all using surplus A8A regulators.
>
> This webpage lists what seem to be the the standard O2 cylinder sizes
> these days:
>
> http://www.mhoxygen.com/index.php?option=com_content&view=article&id=...
>
> The cylinder sizes I generally see referred to in forums like these
> are these medical sizes:
>
> D-size: 4.4 in/11.1 cm diameter, 18.7 in/47.4 cm length, 14.7 ft^3
> volume
> JD-size: 5.3 in/13.3 cm diameter, 18.1 in/46.0 cm length, 22.8 ft^3
> volume
> E-size: 4.4 in/11.1 cm diameter, 27.0 in/68.6 cm length, 24.1 ft^3
> volume
>
> The information I'm looking to collect is, what size cylinder do you
> actually have installed, and does it generally meet your needs?
>
> Thanks, Bob K.http://www.hpaircraft.com/hp-24

I just reached across my desk for just such an O2 bottle. It's a
AL-647 from MH. For me, it supplies about 12 hours of O2 when flying
in the 14k' to 18k' range. The label says it holds 22.8 Cu. Ft. @
2216 PSI. The dimensions appear to be what you list as a JD-Size.

While the HP-24 can have any mounting you choose, existing gliders are
usually designed for European bottles. MH bottles don't have a 'neck'
for easy mounting like the European style bottles. A suitable neck
can be fabricated from a male & female CG540 fittings and a short
brass pipe. I turned a sleeve of HMWPE to slip over the pipe to
increase the diameter so it fits the mounting clamp in the glider.

FWIW, I've wondered if mounting long, small diameter "pencil" bottles
in the wing roots might be a solution to keep the fuselage less
cluttered.

RobKol

June 26th 12, 06:58 PM

On Jun 26, 8:36*am, Bob Kuykendall > wrote:

CFI-480
http://www.flickr.com/photos/72885489@N00/2231164294/in/set-72157629247935565/

Robert

>
> D-size: 4.4 in/11.1 cm diameter, 18.7 in/47.4 cm length, 14.7 ft^3
> volume
> JD-size: 5.3 in/13.3 cm diameter, 18.1 in/46.0 cm length, 22.8 ft^3
> volume
> E-size: 4.4 in/11.1 cm diameter, 27.0 in/68.6 cm length, 24.1 ft^3
> volume
>
> The information I'm looking to collect is, what size cylinder do you
> actually have installed, and does it generally meet your needs?
>
> Thanks, Bob K.http://www.hpaircraft.com/hp-24

Bob Kuykendall

June 26th 12, 07:27 PM

On Jun 26, 10:58*am, RobKol > wrote:
> On Jun 26, 8:36*am, Bob Kuykendall > wrote:
>
> CFI-480http://www.flickr.com/photos/72885489@N00/2231164294/in/set-721576292...
>
> Robert

Nice mods on the Jantar! Let me know when you're ready to build a
glider from scratch.

Thanks, (the other) Bob K.

Bob Kuykendall

June 27th 12, 12:32 AM

Thank you all for your information and suggestions!

Bob K.

Tim Taylor

June 27th 12, 01:03 AM

On Jun 26, 5:32*pm, Bob Kuykendall > wrote:
> Thank you all for your information and suggestions!
>
> Bob K.

The JD or E if you have space. I have a D and it is a little small.
Loved the JD in my last plane.

You can get any of these for about $100 throught the EMT supply market
with both valve types.

Brad[_2_]

June 27th 12, 01:15 AM

On Jun 26, 8:36*am, Bob Kuykendall > wrote:
> I'm looking to develop a standard O2 cylinder installation for the
> HP-24 sailplane kit, and I'm curious what size cylinders people
> generally have installed these days.
>
> These days a lot of folks seem to be using EDS systems which seem to
> offer very good efficiency at turning *pressurized gas into blood
> oxygen. So less pressurized gas is needed than back in the old days
> when we were all using surplus A8A regulators.
>
> This webpage lists what seem to be the the standard O2 cylinder sizes
> these days:
>
> http://www.mhoxygen.com/index.php?option=com_content&view=article&id=...
>
> The cylinder sizes I generally see referred to in forums like these
> are these medical sizes:
>
> D-size: 4.4 in/11.1 cm diameter, 18.7 in/47.4 cm length, 14.7 ft^3
> volume
> JD-size: 5.3 in/13.3 cm diameter, 18.1 in/46.0 cm length, 22.8 ft^3
> volume
> E-size: 4.4 in/11.1 cm diameter, 27.0 in/68.6 cm length, 24.1 ft^3
> volume
>
> The information I'm looking to collect is, what size cylinder do you
> actually have installed, and does it generally meet your needs?
>
> Thanks, Bob K.http://www.hpaircraft.com/hp-24

EDS system. AL415 bottle secured to the forward lift tube.

Brad
Tetra-15

Grider Pirate[_2_]

June 29th 12, 07:38 PM

On Jun 26, 5:15*pm, Brad > wrote:
> On Jun 26, 8:36*am, Bob Kuykendall > wrote:
>
>
>
>
>
> > I'm looking to develop a standard O2 cylinder installation for the
> > HP-24 sailplane kit, and I'm curious what size cylinders people
> > generally have installed these days.
>
> > These days a lot of folks seem to be using EDS systems which seem to
> > offer very good efficiency at turning *pressurized gas into blood
> > oxygen. So less pressurized gas is needed than back in the old days
> > when we were all using surplus A8A regulators.
>
> > This webpage lists what seem to be the the standard O2 cylinder sizes
> > these days:
>
> >http://www.mhoxygen.com/index.php?option=com_content&view=article&id=...
>
> > The cylinder sizes I generally see referred to in forums like these
> > are these medical sizes:
>
> > D-size: 4.4 in/11.1 cm diameter, 18.7 in/47.4 cm length, 14.7 ft^3
> > volume
> > JD-size: 5.3 in/13.3 cm diameter, 18.1 in/46.0 cm length, 22.8 ft^3
> > volume
> > E-size: 4.4 in/11.1 cm diameter, 27.0 in/68.6 cm length, 24.1 ft^3
> > volume
>
> > The information I'm looking to collect is, what size cylinder do you
> > actually have installed, and does it generally meet your needs?
>
> > Thanks, Bob K.http://www.hpaircraft.com/hp-24
>
> EDS system. AL415 bottle secured to the forward lift tube.
>
> Brad
> Tetra-15- Hide quoted text -
>
> - Show quoted text -

Brad,
What size is that?? I've been looking for days on various sites for a
new cylinder, and I've concluded that each VENDOR comes up with their
own 'standard' for naming the cylinders. I was thrilled to note that
the cylinder in the Janus C was an enormous 39 Cubic Feet, and crushed
when I found it was the special thin wall steel cylinder with a
limited life, which had expired NINE YEARS AGO.

Brad[_2_]

June 29th 12, 07:50 PM

On Jun 29, 11:38*am, Grider Pirate > wrote:
> On Jun 26, 5:15*pm, Brad > wrote:
>
>
>
>
>
>
>
>
>
> > On Jun 26, 8:36*am, Bob Kuykendall > wrote:
>
> > > I'm looking to develop a standard O2 cylinder installation for the
> > > HP-24 sailplane kit, and I'm curious what size cylinders people
> > > generally have installed these days.
>
> > > These days a lot of folks seem to be using EDS systems which seem to
> > > offer very good efficiency at turning *pressurized gas into blood
> > > oxygen. So less pressurized gas is needed than back in the old days
> > > when we were all using surplus A8A regulators.
>
> > > This webpage lists what seem to be the the standard O2 cylinder sizes
> > > these days:
>
> > >http://www.mhoxygen.com/index.php?option=com_content&view=article&id=...
>
> > > The cylinder sizes I generally see referred to in forums like these
> > > are these medical sizes:
>
> > > D-size: 4.4 in/11.1 cm diameter, 18.7 in/47.4 cm length, 14.7 ft^3
> > > volume
> > > JD-size: 5.3 in/13.3 cm diameter, 18.1 in/46.0 cm length, 22.8 ft^3
> > > volume
> > > E-size: 4.4 in/11.1 cm diameter, 27.0 in/68.6 cm length, 24.1 ft^3
> > > volume
>
> > > The information I'm looking to collect is, what size cylinder do you
> > > actually have installed, and does it generally meet your needs?
>
> > > Thanks, Bob K.http://www.hpaircraft.com/hp-24
>
> > EDS system. AL415 bottle secured to the forward lift tube.
>
> > Brad
> > Tetra-15- Hide quoted text -
>
> > - Show quoted text -
>
> Brad,
> What size is that?? *I've been looking for days on various sites for a
> new cylinder, and I've *concluded that each VENDOR comes up with their
> own 'standard' for naming the cylinders. *I was thrilled to note that
> the cylinder in the Janus C was an enormous 39 Cubic Feet, and crushed
> when I found it was the special thin wall steel cylinder with a
> limited life, which had expired NINE YEARS AGO.

Hey Jim,

here are the specs from Richards website:

EDS System W/Aluminum AL-415 14.6 Cu. Ft. Cylinder 4.375" Dia X18.65"
Weight 6.25 Lbs.

Brad