What's minimum safe O2 level?

Cub Driver wrote:
On 6 Nov 2004 19:20:43 -0800, (PaulH) wrote:

I took my Arrow up to 10,500 today

I have been skiing at Ajax (Aspen Mountain) on a regular basis for
nearly forty years and have never noticed any effect on mental acuity
at 11,000 feet. Of course it may be that skiers are mentally inacute
to begin with.

But Dan, we *start* at 5K+ MSL! I ski Loveland (10-11K) all the
time with no problems. But remember, we're up and down within
15-30 min (depending on the lift lines and being amazed at where
we live). Flying is something else -- we stay up there for long
periods of time.

My body prefers O2 any time I've over 8K MSL for more than an
hour.

Well, what's about all the "high-landers" who often live at ore above
8K? ;-) (I live above 7K year round for example)
I would guess that goes with Mike's obervation. One adapts to high
altitudes but it takes a day or two (or three). For short trips up one
may end up hypoxic.
What I still have to find out (in an pressure chamber) where my limits
would be.

Chris
PP-ASEL, Glider
New Mexico

Blanche wrote:
Cub Driver wrote:

On 6 Nov 2004 19:20:43 -0800, (PaulH) wrote:


I took my Arrow up to 10,500 today

I have been skiing at Ajax (Aspen Mountain) on a regular basis for
nearly forty years and have never noticed any effect on mental acuity
at 11,000 feet. Of course it may be that skiers are mentally inacute
to begin with.


But Dan, we *start* at 5K+ MSL! I ski Loveland (10-11K) all the
time with no problems. But remember, we're up and down within
15-30 min (depending on the lift lines and being amazed at where
we live). Flying is something else -- we stay up there for long
periods of time.

My body prefers O2 any time I've over 8K MSL for more than an
hour.