X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from m12.lax.untd.com ([64.136.30.75] verified) by logan.com (CommuniGate Pro SMTP 4.3.5) with SMTP id 1026743 for flyrotary@lancaironline.net; Wed, 29 Jun 2005 23:00:17 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.136.30.75; envelope-from=alwick@juno.com Received: from m12.lax.untd.com (localhost [127.0.0.1]) by m12.lax.untd.com with SMTP id AABBNGZ9TABJNMRA for (sender ); Wed, 29 Jun 2005 19:58:57 -0700 (PDT) X-UNTD-OriginStamp: L941HVjjYzDhN3itp//mkHNfn+/7si7xNmxtn6LfbmToqSzvw5MOVw== Received: (from alwick@juno.com) by m12.lax.untd.com (jqueuemail) id KWP9W6NJ; Wed, 29 Jun 2005 19:57:59 PDT To: flyrotary@lancaironline.net Date: Wed, 29 Jun 2005 19:55:41 -0700 Subject: Re: [FlyRotary] Re: NPG + use in aircraft?? Message-ID: <20050629.195659.3804.3.alwick@juno.com> X-Mailer: Juno 5.0.33 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=--__JNP_000_1b8f.2c9d.7694 X-Juno-Line-Breaks: 8-6,11,13-14,17-25,27,30-31,32-32767 From: al p wick X-ContentStamp: 10:5:9536244 X-MAIL-INFO:4f858504112571797414b904d9b98075454130b940a4351d11403041408140151929c4898521045d047d113980e101397925f529ed6d34f950c14495b1d4b90544a5e9cde5e584319184a0 X-UNTD-Peer-Info: 127.0.0.1|localhost|m12.lax.untd.com|alwick@juno.com This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ----__JNP_000_1b8f.2c9d.7694 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Egg had significant cooling issues. Pretty marginal. So he went with the less efficient npg to reduce flight risk. Good decision, except they never put any effort into improving cooling. Only recently did they discover that all their radiators were restricting flow too much. Now are replacing them with much better results. They also made progress by adding fins to improve air flow into the cores. For unproven cooling install I think npg is good conservative decision. Just because it greatly reduces risk of boil over. I would never consider it for my install, as I have robust cooling. FWIW -al wick Artificial intelligence in cockpit, Cozy IV powered by stock Subaru 2.5 N9032U 200+ hours on engine/airframe from Portland, Oregon Prop construct, Subaru install, Risk assessment, Glass panel design info: http://www.maddyhome.com/canardpages/pages/alwick/index.html On Wed, 29 Jun 2005 11:28:08 -0500 "Russell Duffy" <13brv3@bellsouth.net> writes: Can anyone confirm whether Eggenfellner recommends NPG? I know that some of his customers run it, but I can't tell whether it's factory recommended or not. Just curious. Rusty ----__JNP_000_1b8f.2c9d.7694 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: quoted-printable Message
Egg had significant cooling issues. Pretty marginal. So he went with = the=20 less efficient npg to reduce flight risk. Good decision, except they never = put=20 any effort into improving cooling. Only recently did they discover that all= =20 their radiators were restricting flow too much. Now are replacing them with= much=20 better results.
They also made progress by adding fins to improve air flow into the=20 cores.
 
For unproven cooling install I think npg is good conservative decision= .=20 Just because it greatly reduces risk of boil over. I would never consider = it for=20 my install, as I have robust cooling. FWIW
 
-al wick
Artificial intelligence in cockpit, Cozy IV powered by = stock=20 Subaru 2.5
N9032U 200+ hours on engine/airframe from Portland, OregonProp=20 construct, Subaru install, Risk assessment, Glass panel design=20 info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html
 
On Wed, 29 Jun 2005 11:28:08 -0500 "Russell Duffy" <13brv3@bellsouth.net> writes:
Can anyone confirm whether = Eggenfellner=20 recommends NPG?  I know that some of his customers run it, but I can= 't=20 tell whether it's factory recommended or not.  Just curious.<= /DIV>
 
Rusty
 
 

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