X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-bw0-f226.google.com ([209.85.218.226] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4021374 for flyrotary@lancaironline.net; Tue, 15 Dec 2009 08:15:20 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.218.226; envelope-from=msteitle@gmail.com Received: by bwz26 with SMTP id 26so2999438bwz.27 for ; Tue, 15 Dec 2009 05:14:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=tk+ItEEnunJr03EPv4MbSwxU1FElV6fPf6+e7ks3TzQ=; b=X/HthN3hcHvmcdfphIyfixw/JVORbC8vzUJWGoqEYZCgqEUdfZ9UnBJxjPB9o7WwT2 D/ltmhIiofaXBr5MvsjG9GrepbMnBMLTf6yUQL0tN3hY/+JiInZmmRbvWpnt7oy3pMzX 1dDNSir0xwFMEiKXO/FgrLEBp3WRQhjUd47Jo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=RfP3FIwJPgMD+QKjRrLx3RiV6RgyAkC0myS/0LwQ+vyxSYfaHl9hxjnWfjjZEDNhgr iemAiihbRm6Qx8QgshE8rf/Jqu3ZFtkdjMas/HNm83lloH0FHuIgPvAXyVfIb078281L mkENA/hc57VN1pnHHvtY1xXfwzcTx5CcbaFck= MIME-Version: 1.0 Received: by 10.204.11.6 with SMTP id r6mr3715291bkr.29.1260882884681; Tue, 15 Dec 2009 05:14:44 -0800 (PST) In-Reply-To: References: Date: Tue, 15 Dec 2009 07:14:44 -0600 Message-ID: <5cf132c0912150514ne63c1b3x10235dbf7e0d8ce2@mail.gmail.com> Subject: Re: [FlyRotary] Re: Oil cooler From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00032555929a71df85047ac42c81 --00032555929a71df85047ac42c81 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Bill, I seriously doubt that I have a restriction in the line. These are all -8 braided SS hoses. The oil filter is before the oil/air exchanger. The adapter block (and pressure sensor) is located after the oil/air exchanger. The replacement cooler (Modine) is similar in design to the Fluidyne except that the tanks are rounded where the Fluidyne's are flat. So they are inherently stronger. It seem very unlikely that the -8 hose could flow more oil, even at 90psi, than the Fluidyne cooler could handle. This thing is 3" thick. The core half-section is 5.5" x 3". My guess is that it was like this when I bought it and I didn't notice the deformation in the tanks. It was probabl= y over pressurized by someone trying to pressure test it. But that is just a guess. Beware of buying on Ebay! On a side note, it has dawned on me that since all of the oil was bypassing the core of the oil/air exchanger, then all of the oil cooling load has bee= n handled soley by the oil/water exchanger that I installed as a secondary cooler. With a little tweaking, I may not even need an oil/air exchanger a= t all. We'll have to wait and see on that until I have time to explore all the possibilities. Mark S. On Mon, Dec 14, 2009 at 10:58 PM, Bill Bradburry wrote: > 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=92t 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] *O= n > 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 th= e > 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 th= e > oil to go in and right back out again. The tubes look fine, but the cent= er > 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 siz= e > 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 > > > --00032555929a71df85047ac42c81 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Bill,
=A0
I seriously doubt that I have a restriction in the line.=A0 These are = all -8 braided SS hoses.=A0 The oil filter is before the oil/air exchanger.= =A0 The adapter block (and pressure sensor) is located after the oil/air ex= changer.=A0 The replacement cooler (Modine)=A0is similar in design to the F= luidyne except that the tanks are rounded where the Fluidyne's are flat= .=A0 So they=A0are inherently stronger.=A0=A0
=A0
It seem very unlikely that the -8 hose could flow more oil, even at 90= psi, than the Fluidyne cooler could handle.=A0 This thing is 3" thick.= =A0 The core=A0half-section=A0is 5.5" x 3".=A0 My guess is that i= t was like this when I bought it and I didn't=A0notice the=A0deformatio= n in the tanks.=A0 It was probably over pressurized by someone trying to pr= essure test it.=A0 But that is just a guess.=A0 Beware of buying on Ebay!
=A0
On a side note, it has dawned on me that=A0since all of the oil was by= passing the core of the oil/air exchanger, then all of the oil cooling load= has been handled soley by the=A0oil/water exchanger that I installed as a = secondary cooler.=A0 With a little tweaking, I may not even need an oil/air= exchanger at all.=A0 We'll have to=A0wait and see on that until I have= time to explore all the possibilities.
=A0
Mark S.=A0

On Mon, Dec 14, 2009 at 10:58 PM, Bill Bradburry= <bbradbur= ry@bellsouth.net> wrote:

Mark,

Where are you reading oil pressure?=A0 Can you rig so= me way to read it between the pump and the cooler?=A0 Look that replacement= cooler over carefully and check it for changes as you run the engine or fl= y for a while.=A0 It doesn=92t seem reasonable to me that the cooler would = blow up on only 90 psi.=A0 Could you have a restriction in the line somewhe= re?=A0

=A0

Bill B

=A0

From: Rotary motors in aircraft [ma= ilto:flyro= tary@lancaironline.net] On Behalf = Of Mark Steitle
Sent: Monday, December 14, = 2009 8:35 PM
To: Rotary = motors in aircraft
Subject:<= /b> [FlyRotary] Re: Oil cooler

Lynn,

=A0

There's a third possibility that I hadn't con= sidered until I looked at the cooler again tonight after work.=A0 It is evi= dent that the cooler was pressurized to the point that the tank warped caus= ing the divider to pull away from the core (not welded where it meets the c= ore).=A0 This=A0allowed the oil to go in and right back out again.=A0 The t= ubes look fine, but the center of=A0both tanks where there is no support, i= s ballooned outward.=A0

=A0

I'm debating on whether to send it back=A0to Flui= dyne for inspection & repair, or=A0to bite the bullet and=A0order=A0a n= ew one (assuming that this size is still available).=A0 This one is definit= ely repairable, but not sure I'd feel comfortable flying behind it afte= rwards.=A0

=A0

I also need to ask Gary what the working pressure is = for the Fluidyne coolers.=A0 I'm wondering if I may have damaged this c= ooler with 90 psi oil pressure without realizing it?=A0 =A0 <= /p>

=A0


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