X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from QMTA10.westchester.pa.mail.comcast.net ([76.96.62.17] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTP id 3041023 for flyrotary@lancaironline.net; Thu, 24 Jul 2008 18:37:05 -0400 Received-SPF: none receiver=logan.com; client-ip=76.96.62.17; envelope-from=gregw@onestopdesign.biz Received: from OMTA11.westchester.pa.mail.comcast.net ([76.96.62.36]) by QMTA10.westchester.pa.mail.comcast.net with comcast id tsl31Z00C0mv7h05Ayc3ve; Thu, 24 Jul 2008 22:36:03 +0000 Received: from gregoryii ([24.6.40.29]) by OMTA11.westchester.pa.mail.comcast.net with comcast id tycR1Z0040dkeQQ3XycR3x; Thu, 24 Jul 2008 22:36:26 +0000 X-Authority-Analysis: v=1.0 c=1 a=Y8bisKwaNVM-5BB0jpkA:9 a=2rVV_zvOphRBaInd6tAA:9 a=lYOwA-0CzIFSf7fFO9VpsfcIBa8A:4 a=JqzK7hVu6n4A:10 a=BuZy0Jd1cJN6vqxnH9AA:9 a=EFnwz-AFuWfwecGj4bQA:9 a=_KWCw_w1QO9OYutFs6cA:7 a=Mkeh5idLq6iXhlPP-TSDjNUTgfsA:4 a=4vB-4DCPJfMA:10 a=EzXvWhQp4_cA:10 a=AfD3MYMu9mQA:10 Message-ID: From: "Greg Ward" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: exhaust building Date: Thu, 24 Jul 2008 15:40:49 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_03E1_01C8EDA3.A5C08950" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5512 This is a multi-part message in MIME format. ------=_NextPart_000_03E1_01C8EDA3.A5C08950 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable It (H-25) fatigues early at lower temps. That's why all the Nascar = types have stopped using it, because they run around 1500 deg. or so, = and got tired of spending about 5 times the money for header failures. Greg ----- Original Message -----=20 From: Al Gietzen=20 To: Rotary motors in aircraft=20 Sent: Thursday, July 24, 2008 11:55 AM Subject: [FlyRotary] Re: exhaust building Iconel, on the=20 other hand is overkill. It lives at 2000+ degrees, and doesn't like = it at=20 lower temps, and will degrade, plus it's very expensive. Brad; Yes, inconel tolerates temps of 2000+, but explain what is "and = doesn't like it at=20 lower temps". That sounds strange to me. Al G ------=_NextPart_000_03E1_01C8EDA3.A5C08950 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
It (H-25) fatigues early at lower temps.  = That's=20 why all the Nascar types have stopped using it, because they run = around=20 1500 deg. or so, and got tired of spending about 5 times the money for = header=20 failures.
Greg
----- Original Message -----
From:=20 Al = Gietzen=20
Sent: Thursday, July 24, 2008 = 11:55=20 AM
Subject: [FlyRotary] Re: = exhaust=20 building

Iconel, on the

other hand is overkill.  It lives at = 2000+=20 degrees, and doesn't like it at

lower temps, and will degrade, plus it's = very=20 expensive.

 

Brad;

 

Yes, = inconel=20 tolerates temps of 2000+, but explain what is =93and = doesn't like=20 it at

lower temps=94.  That sounds = strange to=20 me.

 

Al=20 G

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