At 01:09 20 May 2017, AS wrote:
On Friday, May 19, 2017 at 11:20:36 AM UTC-4, quietpilot wrote:
Bouncing off a comment from another thread.
=20
a number of we "not in our 40s anymore" pilots are setting the O2 to
ki=
ck in at 5000 msl. =20
=20
O2 is cheap. Clarity of mind at altitude - priceless!
=20
=20
Being in the middle of my 40s myself. I recall spending time
periodically=
in various smoke filled rooms when I was younger before the attacks on
tob=
acco set laws in motion. Although I didn't smoke myself, the 2nd hand
effec=
ts were noticeable even then. Do people who set their O2 to start at
5kmsl=
think environmental factors were important or just adjusting to the
requir=
ements of age in the interest of safety? I start feeling the need about
12=
kmsl and set it at 10K =20
=20
O2 cheap? Perhaps in Hobbs, in the midwest all I get are weird looks. I
h=
ave had an empty tank for years but would like to take the fiberglass
stall=
ion somewhere more dynamic eventually and not have to hunt for 02 once
ther=
e.
=20
Curiously

Don't skimp on O2! I flew the Sports Class Nats in Parowan a number of
year=
s ago in my H301. It had an A8A which needs to be adjusted for altitude
man=
ually. Since I had only a small tank for weight reasons, I turned the O2
on=
and off as I dipped below 12k ft. I made it home w/o problems but when I
g=
ot out of the ship and pushed the old gal towards the trailer, I
developed
=
a splitting headache the likes I never experienced before. I put the
glider=
in the cradle, donned the mask and turned on the O2 to max flow. I
emptied=
the tank by taking deep breaths making sure not to hyper-ventilate.
Within=
a few minutes, the headache was gone and I felt great again.
I can only recommend to take a high altitude physiological training
session=
, aka high altitude chamber ride. I took mine in Dayton, OH but I think
thi=
s chamber is no longer available.

Uli
'AS'


My teaching is that lack of O2 is similar in its' effect to consumption of
alcohol:

Assuming you're acclimatised to around sea level.
10,000 ft = 1 pint of beer
20,000 ft = 1 bottle of wine
30,000 ft = 1 litre of extra strong (90% alcohol) Polish Vodka.

"Ah." you say, " But the effect of alcohol varies from one idividual to
another and from day to day even within one individual." True, so does the
effect of lack of Oxygen. And no, I've never drunk a litre of extra strong
Polish Vodka in one sesion.