lml@lancaironline.net Mailing List Archive

Bill,

Great questions. The ultimate answer is this is really a life or death decision. About once or twice a year some pilot runs out of O2 above 20K' and drills along until the plane runs out of fuel.

So- O2 switch should be in front of you-- not on floor, behind seat etc.

Mask definitely.

Around your neck.

Preflight system before takeoff to ensure proper flow.. especially if bottle is remotely mounted.

Practice-- at night blindfolded with Tim's mum in law screaming at you.

You would be surprised how stupid one can get at FL250 when the cabin depressurizes and how little time (seconds) it takes. All the stuff you hear about "time of useful consciousness" applies to a healthy cardio fit 25 year old lieutenant flying an F/A-18. It does not IMHO apply to a 60 year old out of shape fat guy in a Lancair!

Jeff

(remember I am also the same wimpy guy that said do not practice stalls in a Lancair so take this with a grain of salt)

For starters, if there was a 
rapid decompression at altitude how quickly can a system be activated? Mask 
or cannula- should they be worn around your neck and plugged in just in 
case?

-----Original Message-----
From: Bill Wade <super_chipmunk@roadrunner.com>
To: lml <lml@lancaironline.net>
Sent: Sat, Jan 12, 2013 12:18 pm
Subject: [LML] Re: LML roots

I agree. I've never used an oxygen system before but would like to install 
an emergency system in the IV-P I'm building. For starters, if there was a 
rapid decompression at altitude how quickly can a system be activated? Mask 
or cannula- should they be worn around your neck and plugged in just in 
case? Flow adjustments- I don't know enough yet to even ask intelligent 
questions. Thanks- Bill Wade

-----Original Message----- 
From: Greenbacks, UnLtd.
Sent: Saturday, January 12, 2013 7:40 AM
To: lml@lancaironline.net
Subject: [LML] Re: LML roots

I for one, would like to see LML return to its roots because in my 
experience, it's been adrift for a while. In other words, discussion of 
building techniques and problem solving and best building practices 
generally as they apply to our Lancairs. As well as interspersed with 
discussion of
how to safely and responsibly fly what a lot of us put together in our 
basements over many years. How about the topic of approach to stalls and 
spin avoidance. Gee, we haven't heard much on this subject in quite a while. 
:-) How about portable oxygen solutions, is there a clear winner out there? 
I plan to test the upper end of the altitude envelope in my 360 this year so 
I need to know.
And as for pre purchase advise for a 235/320/360, do your homework and go 
get a ride or 2 or 3 or more. Is there anyone left out there who does not 
know that the 235 gross weight was increased to 1500 lbs over 14yrs ago?
Oh, and here's a suggestion that may send a few people running for the 
hills, opinions may be interesting but really ought to be backed up by fact.


Cheers,

Angier Ames
N4ZQ
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