X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 611086 for flyrotary@lancaironline.net; Thu, 21 Jul 2005 20:23:18 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.67; envelope-from=13brv3@bellsouth.net Received: from ibm60aec.bellsouth.net ([65.6.194.9]) by imf19aec.mail.bellsouth.net with ESMTP id <20050722002232.YDBM27112.imf19aec.mail.bellsouth.net@ibm60aec.bellsouth.net> for ; Thu, 21 Jul 2005 20:22:32 -0400 Received: from rd ([65.6.194.9]) by ibm60aec.bellsouth.net with ESMTP id <20050722002232.LEYD3347.ibm60aec.bellsouth.net@rd> for ; Thu, 21 Jul 2005 20:22:32 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: TES "O" Rings Date: Thu, 21 Jul 2005 19:22:32 -0500 Message-ID: <00e001c58e53$73d2c5f0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00E1_01C58E29.8AFCBDF0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_00E1_01C58E29.8AFCBDF0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable I wonder if the (450 degree f) FEP-SIL might be good enough for the = coolent O-rings but use the high temp for the rotor side seal O-rings........If the coolent seals ever = see even=20 450 degrees the aluminum rotor hsgs will probably start to crush !! =20 "Opinions" =20 I have to admit that I've been wondering exactly what you guys are = trying to achieve with these TES O-rings. The inner ring seems to be a reasonable precaution, though not necessary by any stretch of the imagination. The outer ring is just never going to see these temps unless your engine is = on fire. =20 =20 The only reason I can see for wanting the TES O-rings on the outer seal = is for re-use. From what I've heard, it sounds like you can possibly = re-use the TES ring if it's in good shape. I plan to have several iterations = of single rotor parts, and it would be nice to be able to do that if = possible. =20 I sure hope these guys are taking notes, so they can know what works for = a rotary once you guys figure it out. =20 Cheers, Rusty (working on the next RV-3 intake) =20 ------=_NextPart_000_00E1_01C58E29.8AFCBDF0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
I wonder if the (450 degree f)  FEP-SIL might be good = enough for=20 the coolent O-rings but use the high
temp for the rotor side seal O-rings........If the coolent seals = ever see=20 even
450 degrees the aluminum rotor hsgs will probably start to crush = !!
 
"Opinions"
 
I have to admit that I've been wondering exactly what = you guys are=20 trying to achieve with these TES O-rings.  The inner ring = seems=20 to be a reasonable precaution, though not necessary by any = stretch of the=20 imagination.  The outer ring is just never going to see these temps = unless=20 your engine is on fire. 
 
The only reason I can see for wanting the TES O-rings on = the outer=20 seal is for re-use.  From what I've heard, it sounds like you = can=20 possibly re-use the TES ring if it's in good shape.  I plan to = have=20 several iterations of single rotor parts, and it would be nice to be = able to do=20 that if possible.  
 
I sure hope these guys are taking notes, so they can = know what=20 works for a rotary once you guys figure it out.
 
Cheers,
Rusty (working on the next RV-3=20 intake)   
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