X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 28 Nov 2008 15:25:02 -0500 Message-ID: X-Original-Return-Path: Received: from red2.netwurx.net ([209.242.224.42] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with SMTP id 3320583 for lml@lancaironline.net; Thu, 27 Nov 2008 22:16:43 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.242.224.42; envelope-from=byronjean@jefnet.com Received: (qmail 25987 invoked by uid 0); 28 Nov 2008 03:16:06 -0000 Received: from 209-242-230-197.netwurx.net (HELO kc047041df0dd7) (byronjean@jefnet.com@209.242.230.197) by mail.netwurx.net with SMTP; 28 Nov 2008 03:16:06 -0000 X-Original-Message-ID: From: "Byron and Jean Buckingham" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: 360s at high altitudes X-Original-Date: Thu, 27 Nov 2008 21:15:55 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01C950D5.55CAA5D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0009_01C950D5.55CAA5D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To All, Please verify and report your findings. http://www.c-f-c.com/specgas_products/oxygen.htm Byron Building 360 ----- Original Message -----=20 From: Robert Mitchell=20 To: lml@lancaironline.net=20 Sent: Wednesday, November 26, 2008 6:01 PM Subject: [LML] Re: 360s at high altitudes Hi Stuart, =20 I've used welder's oxygen in the past also. It does cost about $10.00 = a fill vs. aviation oxygen @ $80.00 for my last fill. But, don't do it, = welder's oxygen contains too much water, and other impurities. It will = freeze at high altitudes, more importantly it can corrode the regulator = and gauge and will void any warranty.=20 =20 Pulse oximetry is a nice cross check at high altitudes but should not = be relied upon for various reasons, a prime one being that a little = hyperventilation will artificially raise the oxygen saturation curve, = giving a false sense of security. =20 =20 Bob Mitchell L-320 Senior AME =20 -------------------------------------------------------------------------= ----- From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = Stuart Seffern Sent: Monday, November 24, 2008 10:01 PM To: lml@lancaironline.net Subject: [LML] Re: 360s at high altitudes =20 I use a Standard welding Oxygen bottle which can be exchanged anywhere = in the US for less than $10 and a nose cannula in a O-360. Don't = necessarily try this yourself. I've taken AF high altitude training = twice at Wright Patterson and know well my personal limits. At 22,000, = for just under 1 hour over the Rockies heading east with a 80 knot = tailwind wearing a pulse oxcimeter on my finger I was above the nasty = turbulence and bad WX singing my semi-hypoxic rendition of Stormy = Weather and getting a suntan in smooth air. O2 stats never dropped = below 90%. I saw fuel economy rates as high as 47 MPG! Lancairs are amazing airplanes.. =20 =20 ------=_NextPart_000_0009_01C950D5.55CAA5D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
To All,
 
Please verify and report your=20 findings.
 
http://www.c-f-= c.com/specgas_products/oxygen.htm
 
Byron
Building 360
----- Original Message -----
From:=20 Robert=20 Mitchell
Sent: Wednesday, November 26, = 2008 6:01=20 PM
Subject: [LML] Re: 360s at high = altitudes

Hi=20 Stuart,

 

I=92ve used = welder=92s=20 oxygen in the past also.  It does cost about $10.00 a fill vs. = aviation=20 oxygen @ $80.00 for my last fill.  But, don=92t do it, welder=92s = oxygen=20 contains too much water, and other impurities.  It will freeze at = high=20 altitudes, more importantly it can corrode the regulator and gauge and = will=20 void any warranty.

 

Pulse = oximetry is a=20 nice cross check at high altitudes but should not be relied upon for = various=20 reasons, a prime one being that a little hyperventilation will = artificially=20 raise the oxygen saturation curve, giving a false sense of = security. =20

 

Bob=20 Mitchell

L-320

Senior=20 AME

 

From:=20 Lancair Mailing List=20 [mailto:lml@lancaironline.net] On = Behalf Of=20 Stuart Seffern
Sent: Monday, November 24, 2008 = 10:01=20 PM
To:=20 lml@lancaironline.net
Subject: [LML] Re: 360s at high = altitudes

 

I use = a Standard=20 welding Oxygen bottle which can be exchanged anywhere in the=20 US for less than $10 and = a nose=20 cannula in a  O-360.  Don=92t necessarily try this = yourself. =20  I=92ve taken AF high altitude training twice at Wright Patterson = and know=20 well my personal limits.  At 22,000, for just under 1 hour over = the=20 Rockies heading east with a 80 knot tailwind wearing a pulse oxcimeter = on my=20 finger I was above the nasty turbulence and bad WX singing my = semi-hypoxic=20 rendition of Stormy Weather and getting a suntan in smooth air.  = O2 stats=20 never dropped below 90%.  I saw fuel economy rates as high as 47=20 MPG!

Lancairs are=20 amazing airplanes=85.

 

 

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