Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2893974 for flyrotary@lancaironline.net; Tue, 16 Dec 2003 22:45:05 -0500 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id hBH3ixHH028592 for ; Tue, 16 Dec 2003 22:45:02 -0500 (EST) Message-ID: <000a01c3c44f$b70c4140$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] evap cores Date: Tue, 16 Dec 2003 22:41:54 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01C3C425.CDC9E2E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0007_01C3C425.CDC9E2E0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Paul, to the best of my knowledge, none of the GM cores from the older = vehicles had epoxy. Since the burst pressure for an evaporator core is = much higher than for an automobile radiator, I would be surprised if = they are using epoxy - but, I guess they could be on the more recent = models, I don't really know.=20 I do know that because the side tanks are corrugated that it is very = easy to nick the inside of the corrugated rib drilling to enlarge the = tube entrance hole. So I recommend a flat faced end mill be used for = that purpose. You can use a regular drill - but be very careful not to = let the drill go more than 1/8" in after the widest part of the drill = penetrates. I lost several cores before I figured it out. Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ----- Original Message -----=20 From: sqpilot@earthlink=20 To: Rotary motors in aircraft=20 Sent: Tuesday, December 16, 2003 10:08 PM Subject: [FlyRotary] evap cores Hi, fellow rotary enthusiasts....(especially Ed Anderson). Ed, I seem = to recall that you have had some work done on your evaporator cores. Ed = Klepeis, who might convert an evap. core into a radiator for me = (attaching threaded fittings and mounting brackets) would like to know = if the core has any epoxy. I am considering buying the core new, but = the catalog at CarQuest does not mention wether or not there is any = epoxy. It looks just like the core from a Chevy Astro van, only larger. = In your experience, did you find there was epoxy in the evap. cores you = have encountered/experimented with? Thanks for your input. Paul Conner ------=_NextPart_000_0007_01C3C425.CDC9E2E0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Paul, to the best of my knowledge, none = of the GM=20 cores from the older vehicles had epoxy.  Since the burst pressure = for an=20 evaporator core is much higher than for an automobile radiator, I would = be=20 surprised if they are using epoxy - but, I guess they could be on the = more=20 recent models, I  don't really know. 
 
I do know that because the side tanks = are=20 corrugated that it is very easy to nick the inside of the corrugated rib = drilling to enlarge the tube entrance hole.  So I recommend a flat = faced=20 end mill be used for that purpose.  You can use a regular drill - = but be=20 very careful not to let the drill go more than 1/8" in after the widest = part of=20 the drill penetrates.  I lost several cores before I figured it=20 out.
 
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
----- Original Message -----
From:=20 sqpilot@earthlink
Sent: Tuesday, December 16, = 2003 10:08=20 PM
Subject: [FlyRotary] evap = cores

Hi, fellow rotary = enthusiasts....(especially Ed=20 Anderson).  Ed, I seem to recall that you have had some work done = on your=20 evaporator cores.  Ed Klepeis, who might convert an evap. core = into a=20 radiator for me (attaching threaded fittings and mounting brackets) = would like=20 to know if the core has any epoxy.  I am considering buying the = core new,=20 but the catalog at CarQuest does not mention wether or not there is = any=20 epoxy.  It looks just like the core from a Chevy Astro van, only=20 larger.  In your experience, did you find there was epoxy in the = evap.=20 cores you have encountered/experimented with?  Thanks for your=20 input.   Paul Conner
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