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  #21  
Old 06-19-2020, 08:47 AM
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scard scard is offline
 
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Location: Cedar Park, TX
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Quote:
Originally Posted by swjohnsey View Post
So is 93% what to shoot for? I was told to keep it above 90%.
I'm addicted to the stuff, and at 90% I know I'm "low". It probably very much depends on the person.
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  #22  
Old 06-19-2020, 08:53 AM
219PB 219PB is offline
 
Join Date: Aug 2014
Location: Victoria, Tx
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Quote:
Originally Posted by Jonathan Alvord View Post
We used an Inogen for two people at 16.5 and it worked great. Was a heck of a trip over the Mountains of Montana with a 65kt head wind.
Jonathan,

Thanks for the reply. This is exactly what I was looking for. Real world examples! Were there any issues with two people using the single system? It is a pulse demand system and wanted to know if you could detect any differences if you and your wife were breathing in unison, 180 degrees out of sync or anything in between.

To others,

I understand that a bottle is less expensive and oxygen is usually available at airports but it is worth it to me not to have to be taking the time required to hustle these items down or trying to ration the O2 supply on trips. If there was an "unlimited" supply on hand, it would get used more often. I have been told that it helps keep the fatigue level down even at flights as low as 8K. Haven't ever used oxygen personally but do make 600 nm trips frequently.

Paul
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  #23  
Old 06-19-2020, 06:39 PM
Ezburton Ezburton is offline
 
Join Date: May 2017
Location: MD
Posts: 92
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Quote:
Originally Posted by Ezburton View Post
I actually made a system for <$200 from new parts available on ebay. Pick a tank size that fits your need and space (170 liter M6 for me), I got a Easy Pulse 5 oxygen conserving regulator, cannula, and a pouch for the whole thing. I purchased some flow spinner things from Mountain High so you can see the oxygen flowing each time you take a breath (sometimes its hard to detect). The whole thing weighs 4.1 lbs and is all medical grade stuff.

The regulator has 5 settings for the amount of O2 per breath or can go continuous. At the highest setting the 170L of O2 last 3.2 hours and 10.1 at the lowest. Set it based on your pulse oximeter. Mounted the whole thing with a fire extinguisher mount.

I get it filled at Roberts Oxygen. They gave me a bit of a hassle the first time, but once they stuck their label on the bottle, it wasn't a problem after that.

Could send photos if you want.
I had a couple of people ask me about my DIY system I put together for the limited space in my Long EZ. Here the description I sent out...

The O2 system consists of a small bottle, a demand style regulator, cannula, a carrying bag, regulator key, a pin wheel flow indicator and a mounting bracket. I bought an adapter so that the medical bottle could be filled at an airport, but I have never used it because a bottle lasts so long. The whole setup weighs just over 4 pounds.

The bottle I used was an M6 size bottle which holds 165 liters. With the pulse demand regulator, that can last from 3 to 10 hours depending on the regulator setting. These are medical bottles and have a special yoke style regulator for a post valve. Get whatever size you think you need. The little M6 I have is about 12” tall and 3.2” diameter. Surf around, you can get these new for $50 - 75. https://www.wtfarley.com/M6-Aluminum-Oxygen-Cylinder Make sure they are new, or you might have trouble getting it filled.

The cornerstone of this setup is the Easy Pulse 5 regulator. It has 5 settings and you can dial it in for however much you need based on your pulse oximeter indications. This is a yoke type and only works with medical bottles. $100-150 https://www.ebay.com/itm/Precision-M...oAAOSwoKhe6rbe

I used a fire extinguisher mount from Spruce and bolted it to some hard points in the strakes so it was in easy reach. $17 https://www.aircraftspruce.com/catal...clickkey=22029

Close to the bottle and in view, I had a flow indicator. With all the noise and air movement in the cockpit I had a hard time telling if I was getting O2. This gives you a visual indication. https://www.mhoxygen.com/product/rot...indicator-red/ from Mountain High for $14.

A carrying bag you can get on Ebay or just about anywhere else for $15. A lot of times they come with a wrench to open the valve and or a cannula so watch for a combo deal. https://www.ebay.com/itm/Portable-Ox...temCondition=3

If you are willing to go preowned, you can find most of this stuff for 50 to 75% less than the new stuff I have linked.

I also bought a boom cannula from Mountain High I think. In the cockpit of the Long EZ this was a must. I super like this cannula. https://www.mhoxygen.com/product-cat...s-e-z-breathe/

I also where the pulse oximeter around my neck. You can get those just about anywhere. I think Anti-Splat is selling them as well.

There is an adapter you can buy which will allow the medical bottle to be filled at an airport or welding shop. Its in my hangar still in the box... I never used it. A retired fire fighter friend said you might talk your way into getting the tank filled for a generous boot donation. The adapter is made by Western Gas and Control Technology model M87-1. Here is a link to the company, but I don't know where I found it, ebay I'd bet. http://westernenterprises.com/?s=m87-1
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Last edited by Ezburton : 06-21-2020 at 08:11 AM. Reason: Addded adapter part number
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  #24  
Old 06-20-2020, 05:03 PM
Tom @ N269CP Tom @ N269CP is offline
 
Join Date: Oct 2017
Location: Green Cove Springs, FL
Posts: 106
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My MH system practically lasts the entire summer season between refills. Based in Durango, most of my flying is on O2. Refilling is so infrequent that its not an inconvenience whatsoever.
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Kind regards,

Tom

==================================
RV-8 N269CP
O-360-A1A w/Hartzell CS prop on 100LL
Slick-IC+PMag ignitions
Steam gauges
EI UBG-16, FP-5, & MUX-8A datalogger
Garmin Aera 660
TruTrak ADI Pilot II (GPS coupled)
Garmin GDL39 3D ADSB-In
uAvionix Tailbeacon ADSB-Out
Infinity grip w/Matronics trim speed control
Reiff preheater system
TCW oil cooler air damper w/servo drive
AntiSplat oil mist separator
Mountain High O2D1 O2 system

Location: Durango, CO (KDRO)
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  #25  
Old 06-20-2020, 05:10 PM
Tom @ N269CP Tom @ N269CP is offline
 
Join Date: Oct 2017
Location: Green Cove Springs, FL
Posts: 106
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Quote:
Originally Posted by swjohnsey View Post
So is 93% what to shoot for? I was told to keep it above 90%.
Im normally at 94% on O2. Being based in Durango probably lowers my O2 demand at 10,000 ft.

Eat more steak. 😄
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Kind regards,

Tom

==================================
RV-8 N269CP
O-360-A1A w/Hartzell CS prop on 100LL
Slick-IC+PMag ignitions
Steam gauges
EI UBG-16, FP-5, & MUX-8A datalogger
Garmin Aera 660
TruTrak ADI Pilot II (GPS coupled)
Garmin GDL39 3D ADSB-In
uAvionix Tailbeacon ADSB-Out
Infinity grip w/Matronics trim speed control
Reiff preheater system
TCW oil cooler air damper w/servo drive
AntiSplat oil mist separator
Mountain High O2D1 O2 system

Location: Durango, CO (KDRO)
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  #26  
Old 06-21-2020, 08:46 AM
XPPilot XPPilot is offline
 
Join Date: May 2012
Location: Dallas, TX
Posts: 195
Default O2 DIY system

Don / Ezburton,

Any thoughts about this regulator from Amazon?

EverOne Mini Oxygen Regulator with Key, 0-25 Litersper min, Brass Sleeve, 870 CGA Connection, Brass Sleeve

https://smile.amazon.com/EverOne-Oxy...dDbGljaz10cnVl
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  #27  
Old 06-21-2020, 09:54 AM
swjohnsey swjohnsey is offline
 
Join Date: Nov 2018
Location: Kingsville, TX
Posts: 183
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I would look for one 0-10 or so because of finer adjustment range.
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  #28  
Old 06-21-2020, 10:27 AM
XPPilot XPPilot is offline
 
Join Date: May 2012
Location: Dallas, TX
Posts: 195
Default O2 DIY system

The one above from Amazon specification says:

ADJUSTABLE FLOW RATE - Easily adjusts between 12 preset flow settings from 0-25 LPM with a simple turn of the knob. Easy to read indicator shows the current LPM.
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  #29  
Old 06-21-2020, 11:54 AM
Steve Iacoviello Steve Iacoviello is offline
 
Join Date: Apr 2015
Location: The Woodlands, TX
Posts: 37
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I have a Pediatric regulator on my tank. Fine control of O2 use. No need to flow anywhere near 10 liters per minute for me.
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  #30  
Old 06-21-2020, 03:09 PM
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dpansier dpansier is online now
 
Join Date: Jan 2006
Location: Green Bay, WI (GRB)
Posts: 476
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Several years ago Kitplanes had a great article on constructing a DIY Oxygen system.

https://www.kitplanes.com/homebuilt-o2/
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