I bought a Mountain High EDS Model D1(Electronic Delivery System) at the Lancair Open House.  My problem had been low ox absorbs ion (apparently I am a shallow breather).  A minimum 90% level for me required increasing by 2 or 3K settings on the Flow Meter using the Rubber Mustache Cannula or using a Mask with normal (actual flight altitude) setting.  With the EDS set on "Normal" my ox level was 92 to 96%.  I checked my blood ox frequently with a Oxymeter to confirm this.

Steve, how did I miss you?

 

I also bought just such a system with the 8.5 cubic foot cylinder (17 hrs at 15000 ft if using the EDS) and remote outlets.  I am going to fasten the little tank (a lot smaller and lighter than the 22 cubic foot tank and "moustache" cannula I flew out with) behind the co-pilot seat and put "remote" outlets in the ceiling behind the rollover.  Maybe the co-pilot one will be a dummy so that sleep will replace any nagging/complaining.  In any event, the 8 hr return home flight was conducted at 15500 and 13500 until we had to come down over Minnesota because Arnie had run out of O2 (Economizer cannula) and was getting a headache while I had yet to reach the half full point using my new MH equipment.   I have exactly the same shallow breathing "problem" and my Oximeter showed similar results - always above 90%, usually at 93% which is almost as good as I get on the ground (96%).  The nice part is that you can activate the system before you take off but not draw any O2 until you need it, say above 5000 feet.  BTW, lower altitudes delivered short pulses every second or third breath while at 15500 longer pulses were delivered every breath.

 

 

PS I convinced Eric to give me a free MH shirt along with my Saturday purchase.