School Me On Aircraft Oxygen System and How To Use it.

[RV6-KPTW]

The Oxysaver Cannula Kit with the Flow Meter Needle Valve will allow you to adjust the flow away from the bottle’s regulator. Can be used with mask or Oxysaver cannula.

4110-704, Oxysaver Cannula Retrofit Kit w Flow Meter Needle Valve

Aerox is the World Leader in Engineered Aviation Oxygen Systems. Providing Portable and Installed Solutions. Fly Higher, Fly Safer with Aerox.

www.aerox.com

View attachment 70265

I have this setup also. Today at 16.5 / 18.7 density altitude, I noticed it was a little light set to the indicated altitude. Perhaps oxy should be managed at the Density Altitude?

Thanks

 

[PhatRV]

I have this setup also. Today at 16.5 / 18.7 density altitude, I noticed it was a little light set to the indicated altitude. Perhaps oxy should be managed at the Density Altitude?

Thanks

I am planning to test out my new O2 system this weekend if the weather allows. I am going to use the oximeter to gauge the effectiveness of the settings.

 

[rolivi]

Perhaps oxy should be managed at the Density Altitude?

Adding to the confusion I find this: The FAA's oxygen rules in §91.211 are based on pressure altitude. Assuming our lungs are like our engines and wings and dependent on density altitude, why are the oxygen requirements not based on density altitude? SGOTI's post

Indicated, Presure, Density. Pick a "setting" that gives good results on your finger (pulse oximeter) and you'll be fine. But yes, it's confusing for me!

 

[Webb]

I have an RV-8. I use the MH constant flow portable system. It has a two place regulator. Portable Constant-Flow flow meter. Cylinder size is AL-647. If I’m solo, I secure the carrying case to my lap belt and carry the bottle on the floor on my left side so I can access the valve. When I get to altitude I twist the valve and adjust the flow meter.

When I have a GIB the tank is strapped to the top roll bar behind the pilot seat. My GIB operates the valve as needed. Works pretty well so far.

I don’t own the MH 02D2 Portable Pulse Demand system. I’d like to get one but they’re expensive. I’ve heard they have to be sent back to MH periodically to get recalibrated.

I like Foghorns set up, looks super clean.

Pictures please

 

[Roadjunkie1]

I would bet that the MH-3 would work as it is made to work with their conserving cannula. They probably work similarly. You might email MH and say you have a system already that has the Aerox cannula and would the MH-3 work. I found them just a little snooty when I tried to talk to them at OSH. Finally had to just walk away. They might be better on email.

Picture of the MH-4 installed from a KITPLANES article from Dec 13, 2013. Note the conserving cannula used with this system.

 

[PhatRV]

Adding to the confusion I find this: The FAA's oxygen rules in §91.211 are based on pressure altitude. Assuming our lungs are like our engines and wings and dependent on density altitude, why are the oxygen requirements not based on density altitude? SGOTI's post

Indicated, Presure, Density. Pick a "setting" that gives good results on your finger (pulse oximeter) and you'll be fine. But yes, it's confusing for me!

Test plan:

I am going to record the oximeter values at near sea level. (98%)
Once I am at 5500 feet pressure altitude, I'll measure it again ==> This is going to be the baseline oximeter reading when I get higher.
Fly with O2 set at 10,000 => measure O2 at
8500 ft
9500 ft
10,500 ft

Bump the O2 regulator to 12,500 ft => Measure O2 at
11,500 ft
12,500 ft

Bump the O2 regulator to between 12,500 and 15,000 ==> Measure O2 at
13,500 ft ==> I can go higher but from all of my flight planning, I haven't encountered a trip that I need to go higher than 13,500ft and this is rare and only for terrain purpose. In all the flight plans from ForeFlight, I burn more fuel at this altitude because I am burning more fuel climbing than flying LOP cruising. My XC experience is limited so far. Most of my planned trips are around 2 hours, few go as far as 3 hours. If I plan to fly 3+ hours then I have to see if going higher is needed.

 

[fl-mike]

Here is the setup I have on my 8. Those are aluminum billiard table cup holders that I made double-deep. I use M6 size tanks. I picked up 14 or so M6 and some E size filled tanks on FaceBook marketplace for cheap. I tried to get some tanks swapped at a medical ox place and they wouldn't serve me without insurance (I had a script). They are in the weekly rotation biz and had no interest in my couple tanks. I don't use ox a lot, so I'm just going to use a tank and pitch it when empty. Anyway, I use the M6 tanks with a pediatric regulator, and monitor my saturation with a finger thing. Everything is by my right knee. I have a loop strap that ties the tank down in case of bumps (modified dog leash)

 

[PhatRV]

My tank with the regulator is just over 20 inches long. I am going to fly with it with the tank laying down by the rear seat foot rest. For the long term, the tank will be bolted to the rear baggage compartment like in some of the pictures, and I need to get a remote regulator. Maybe I will get a mountain high remote regulator if I ended up using o2 a lot more frequently

 

[PilotjohnS]

Come on up, the air is fine! The RV-8 likes it up here!

Screenshot, LOP at 17,500’ (DA = 18,642’):



Just watch the TAS Vne on the way down.

Staying under Vne on way down is hardest part for me.