X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=HLeBLclv c=1 sm=1 tr=0 a=xuqu4LtG73bbFu04xJYfKg==:117 a=xuqu4LtG73bbFu04xJYfKg==:17 a=8nJEP1OIZ-IA:10 a=7mUfYlMuFuIA:10 a=Ia-xEzejAAAA:8 a=pGLkceISAAAA:8 a=Citb1EV9r0G51P0z4f4A:9 a=CjuIK1q_8ugA:10 a=oKDEPC6pHbtLpk1s:21 a=_W_S_7VecoQA:10 a=QEXdDO2ut3YA:10 a=Urk15JJjZg1Xo0ryW_k8:22 From: "Bobby J. Hughes bhughes@qnsi.net" Received: from [207.91.159.28] (HELO barracuda.qnsi.net) by logan.com (CommuniGate Pro SMTP 6.2.5) with ESMTP id 11299019 for flyrotary@lancaironline.net; Mon, 25 Jun 2018 08:05:32 -0400 Received-SPF: pass receiver=logan.com; client-ip=207.91.159.28; envelope-from=btv1==7141c1cc332==bhughes@qnsi.net X-ASG-Debug-ID: 1529928299-0276454d830b860001-fw4j19 Received: from mail.qnsi.net ([10.0.0.5]) by barracuda.qnsi.net with ESMTP id SCefpy84HjFpzbTJ for ; Mon, 25 Jun 2018 07:04:59 -0500 (CDT) X-Barracuda-Envelope-From: bhughes@qnsi.net Received: from 10.0.0.5 ([10.0.0.5]) by qnsi-mail.qnsi.net ([10.0.0.5]) with Microsoft Exchange Server HTTP-DAV ; Mon, 25 Jun 2018 12:04:59 +0000 Content-Type: multipart/alternative; boundary="Apple-Mail-9E9276E3-1647-450E-9CB9-CD7EF7CBFB1E"; charset="iso-8859-1" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 (1.0) Subject: Re: [FlyRotary] Re: fluidyne oil cooler Message-ID: <4AB293DB-39F4-4591-A94F-DAC8EAC0D30C@qnsi.net> X-ASG-Orig-Subj: Re: [FlyRotary] Re: fluidyne oil cooler thread-topic: [FlyRotary] Re: fluidyne oil cooler thread-index: AdQMfL09JHL1XRwGTgGCOQAKtFl6ow== Date: Mon, 25 Jun 2018 07:04:58 -0500 References: To: "Rotary motors in aircraft" In-Reply-To: X-Barracuda-Connect: UNKNOWN[10.0.0.5] X-Barracuda-Start-Time: 1529928299 X-Barracuda-URL: http://10.0.0.4:8000/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at qnsi.net X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 1.12 X-Barracuda-Spam-Status: No, SCORE=1.12 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=1000.0 tests=BSF_SC0_TG783c, HTML_MESSAGE, MIME_QP_LONG_LINE, MIME_QP_LONG_LINE_2 X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.52331 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.00 HTML_MESSAGE BODY: HTML included in message 0.00 MIME_QP_LONG_LINE RAW: Quoted-printable line longer than 76 chars 0.82 MIME_QP_LONG_LINE_2 RAW: Quoted-printable line longer than 76 chars 0.30 BSF_SC0_TG783c Custom Rule TG783c --Apple-Mail-9E9276E3-1647-450E-9CB9-CD7EF7CBFB1E Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable I would not be comfortable removing the pressure relief valve. I think a lar= ge pressure spike can occur at start up and is worse with cold oil.=20 -10 oil lines with -12 adapters at the oil cooler.=20 Bobby Sent from my iPad > On Jun 25, 2018, at 1:07 AM, Steven W. Boese SBoese@uwyo.edu wrote: >=20 > 5/8" hoses and AN10 fittings were used with the Fluidyne cooler. I have n= o data indicating whether or not those sizes are overkill. >=20 > Since the oil pump is a positive displacement hydraulic pump, it is likely= that it could produce pressures well in excess of 300 psi if the flow was s= eriously restricted and the drive mechanism didn't fail. So I personally do= n't see a compelling reason to eliminate the relief valve. >=20 > Steve Boese >=20 > On Jun 24, 2018, at 10:43 PM, Todd Bartrim bartrim@gmail.com wrote: >=20 >> What size hose are you using to feed this cooler? For that matter, what s= ize hose is everybody using? I'm only using 1/2" but my testing with hose on= ly and no cooler indicates that it is not a restriction. >> But this cooler comes with AN -12 fittings which is 3/4". Probably nece= ssary for some applications but I think the oil passages in/out of the irons= were less than 1/2" so probably not required for our use. >>=20 >> I think I'll pull the Mazda cooler right now and cut an end off of it f= or an inspection. Depending what I find I might pull the trigger on a new on= e. >> While it's off, I'm really tempted to remove the oil pan and pull out th= at safety valve. All my hoses are rated at 300psi and the cooler is rated at= 200psi. What is an oil filter rated for? >>=20 >> Todd >>=20 >> Todd Bartrim >>=20 >>=20 --Apple-Mail-9E9276E3-1647-450E-9CB9-CD7EF7CBFB1E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit I would not be comfortable removing the pressure relief valve. I think a large pressure spike can occur at start up and is worse with cold oil. 

-10 oil lines with -12 adapters at the oil cooler. 

Bobby

Sent from my iPad

On Jun 25, 2018, at 1:07 AM, Steven W. Boese SBoese@uwyo.edu <flyrotary@lancaironline.net> wrote:

5/8" hoses and AN10 fittings were used with the Fluidyne cooler.  I have no data indicating whether or not those sizes are overkill.

Since the oil pump is a positive displacement hydraulic pump, it is likely that it could produce pressures well in excess of 300 psi if the flow was seriously restricted and the drive mechanism didn't fail.  So I personally don't see a compelling reason to eliminate the relief valve.

Steve Boese

On Jun 24, 2018, at 10:43 PM, Todd Bartrim bartrim@gmail.com <flyrotary@lancaironline.net> wrote:

What size hose are you using to feed this cooler? For that matter, what size hose is everybody using? I'm only using 1/2" but my testing with hose only and no cooler indicates that it is not a restriction.
  But this cooler comes with AN -12 fittings which is 3/4". Probably necessary for some applications but I think the oil passages in/out of the irons were less than 1/2" so probably not required for our use.

   I think I'll pull the Mazda cooler right now and cut an end off of it for an inspection. Depending what I find I might pull the trigger on a new one.
 While it's off, I'm really tempted to remove the oil pan and pull out that safety valve. All my hoses are rated at 300psi and the cooler is rated at 200psi. What is an oil filter rated for?

Todd

Todd Bartrim
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