X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost04.isp.att.net ([207.115.11.54] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4021013 for flyrotary@lancaironline.net; Mon, 14 Dec 2009 23:59:22 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.54; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-230-67-216.mco.bellsouth.net[74.230.67.216]) by isp.att.net (frfwmhc04) with SMTP id <20091215045843H0400115lke>; Tue, 15 Dec 2009 04:58:44 +0000 X-Originating-IP: [74.230.67.216] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Oil cooler Date: Mon, 14 Dec 2009 23:58:43 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004E_01CA7D19.5E676810" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Acp9Jt/FwZUEKJEQQcertLSVAkobkQAG4y+Q X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_004E_01CA7D19.5E676810 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Mark, Where are you reading oil pressure? Can you rig some way to read it between the pump and the cooler? Look that replacement cooler over carefully and check it for changes as you run the engine or fly for a while. It doesn't seem reasonable to me that the cooler would blow up on only 90 psi. Could you have a restriction in the line somewhere? Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle Sent: Monday, December 14, 2009 8:35 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Oil cooler Lynn, There's a third possibility that I hadn't considered until I looked at the cooler again tonight after work. It is evident that the cooler was pressurized to the point that the tank warped causing the divider to pull away from the core (not welded where it meets the core). This allowed the oil to go in and right back out again. The tubes look fine, but the center of both tanks where there is no support, is ballooned outward. I'm debating on whether to send it back to Fluidyne for inspection & repair, or to bite the bullet and order a new one (assuming that this size is still available). This one is definitely repairable, but not sure I'd feel comfortable flying behind it afterwards. I also need to ask Gary what the working pressure is for the Fluidyne coolers. I'm wondering if I may have damaged this cooler with 90 psi oil pressure without realizing it? Mark On Mon, Dec 14, 2009 at 6:58 PM, Lynn Hanover wrote: Stephen, I called Fluidyne today and spoke with Gary, the owner. While the cooler is not under warranty, they are willing to look at it and determine if it can be repaired. I'll send it off and see what they say. Mark There should be evidence of a TIG bead half way around the end tank near the center. Either its there or it isn't. If not and both fittings are in the same end, it is the problem....... Lynn E. Hanover ------=_NextPart_000_004E_01CA7D19.5E676810 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Mark,

Where are you reading oil pressure?  Can you rig some way = to read it between the pump and the cooler?  Look that replacement cooler = over carefully and check it for changes as you run the engine or fly for a while.  It doesn’t seem reasonable to me that the cooler = would blow up on only 90 psi.  Could you have a restriction in the line = somewhere? 

 

Bill B

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Monday, December = 14, 2009 8:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Oil cooler

Lynn,

 

There's a third possibility that I hadn't considered until I = looked at the cooler again tonight after work.  It is evident that the cooler = was pressurized to the point that the tank warped causing the divider to = pull away from the core (not welded where it meets the core).  = This allowed the oil to go in and right back out again.  The tubes look fine, but = the center of both tanks where there is no support, is ballooned outward. 

 

I'm debating on whether to send it back to Fluidyne for = inspection & repair, or to bite the bullet and order a new one (assuming that this size is still available).  This one is = definitely repairable, but not sure I'd feel comfortable flying behind it afterwards. 

 

I also need to ask Gary what the working pressure is for the Fluidyne coolers.  I'm = wondering if I may have damaged this cooler with 90 psi oil pressure without realizing it?   

 

Mark

On Mon, Dec 14, 2009 at 6:58 PM, Lynn Hanover <lehanover@gmail.com> = wrote:

Stephen,

 

I called Fluidyne today and spoke with Gary, the owner.  While the = cooler is not under warranty, they are willing to look at it and determine if it = can be repaired.  I'll send it off and see what they say.  =

 

Mark

There should be evidence of a TIG bead half way around the end = tank near the center. Either its there or it isn't. If not and both fittings = are in the same end, it is the problem.......

 

Lynn E. Hanover

 

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