I've got a MH O2D2 portable system . . .
. . . 2. I have easy (my hangar) access to refills.
. . . having easy access to refills might be pivotal. If I had to take the bottle in for refills, I may opt for more capacity to minimize the inconvenience.
What is your in-hangar O2 refill equipment? Is it something that's available to us po-folk?
I have the AL-248 and have it mounted forward of the seats on the high pressure fuel pump cover with MH supplied clamps. The controller is velcroed just forward of the fuel selector. Everything is in view and easy to access in flight and quickly removed for refills or when not on a trip.
Merrill
ok, cylinder sizes... I have 3 and may be picking up some more. Cylinders are cheap:
I'm tempted to replace the M9 & D with a pair of CFFC or KF ones. I'm watching the auction sites to see if anything comes up.
- M4 - This one is usually in the plane all the time. It's small and light and it's there if I'm every flying and decide to go higher. Or if it's night time and I feel like putting on o2.
- M9 - This one is around for the usual continental-US trip. It's big enough that the two of us should have sufficient o2 for almost anything, and it's easy enough to get a fill in a pinch in CONUS.
- D - This is the international cylinder. Gets us 6hrs each at 15k which is usually enough for almost anything. We used 2/3 of it flying over the Mexican plains at 13-14k last month
Hi Mitch,
Could not find any old pics of my O2 installation and since I'm doing the Condition Inspection, everything is a little apart. So, I mocked up the installation. I did put doublers under the cover for the bolts/nuts.
Merrill
What is your in-hangar O2 refill equipment? Is it something that's available to us po-folk?
The regulators seem to be the expensive part. I can't see a reason to use other than a $25 regulator from Amazon on a $50 M6 aluminum tank. Two liters per minute through a $2 nasal cannula, and refill for $5 at your local welding shop.
Am I missing something other than some kind of panel-mounted doodad with flashing lights? Mojo Mike spent $3000 on his O2 setup. That seems crazy to me.
You are not missing anything. 2L/min is a lot. We wear pulse-ox finger sensors and adjust the flow accordingly. 1L/min is usually enough. Sometimes 1.5, so get a mini pediatric regulator that gives you the finer adjustment down low. I think mine does .25, .5, .75, 1, 1.5, 2, 2.5, 3, 4, 5.
As for cheap oxygen regulators... how do those compare with aviation regulators in terms of pressure compensation, reliability in the aviation environment, etc? Seems like the wrong place to save a few bucks...
As for cheap oxygen regulators... how do those compare with aviation regulators in terms of pressure compensation, reliability in the aviation environment, etc? Seems like the wrong place to save a few bucks...
I am likely going with the Mountain High O2D2 EDS system and am looking for recommendations on cylinder size for the RV7. Wanting to find the sweet spot that balances duration and cylinder size/weight in the baggage area.
I run the MH with a 14cu ft tank 'D' AL415 mounted on the baggage sidewall behind the CP seat. Fit perfect and I can reach over and turn it on/off while flying.
Walt - Can you post a picture of your tank mounting? I have the same MH setup & so far have just strapped the tank in the provided carrying bag into the otherwise empty copilot seat. Hoping to get my wife to fly across the country with me soon, and she will need that seat!
Also, if you use the O2D2 unit, where & how do you mount it?
Thanks,
David
Walt - thanks for posting the pictures.
The location under the control quadrant is perfect. My fire extinguisher occupies that spot today, I may have to find a new home for it.
I can see how the top tank bracket is attached to what appears to be a new panel forming a nice storage pocket. Is the bottom bracket mounted the same way? Is that panel riveted or screwed into place?