Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 764449 for flyrotary@lancaironline.net; Tue, 01 Mar 2005 09:54:11 -0500 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.rr.com [24.74.185.127]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j21ErLCi000895 for ; Tue, 1 Mar 2005 09:53:23 -0500 (EST) Message-ID: <003001c51e6e$718e3c70$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Filterr or not to Filter: [FlyRotary] Re: FW: Cooling system update Date: Tue, 1 Mar 2005 09:53:34 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002D_01C51E44.884F3970" 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_002D_01C51E44.884F3970 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I agree, trying to fix the problem that isn't there can be frustrating = in the extreme. In Perry's case, I certainly understand the use of the = "Radiator Stop-Leak" if you are out and need to get home as an = "emergency" measure, but on the other hand I don't think a screen would = necessarily have made any difference in his case. Once you put = something like that in your system then you have compromised it to a = degree. But, then that is what this is all about - some perceive risks where = others do not and hence take a step to alleviate said risk. However, I = can see some folks using a screen and never having a problem (just like = some of us flying have not (at least thus far) had a problem with gunk = in the coolant system) and others using a screen and perhaps getting = flow restriction or stoppage and others (who inspect regularly) showing = where a screen has perhaps stopped gunk from flowing into the radiator.. My personal viewpoint is to minimize the number of components, but will = readily admit to have screens and filters in my fuel line - so perhaps = the having same in the coolant lines is no different (at least in = concept). {:>) Ed A ----- Original Message -----=20 From: Mark R Steitle=20 To: Rotary motors in aircraft=20 Sent: Tuesday, March 01, 2005 9:32 AM Subject: [FlyRotary] Re: Filterr or not to Filter: [FlyRotary] Re: FW: = Cooling system update Ed, I think you hit the nail on the head. It likely has a lot to do with = how much squeeze-out one has on mating surfaces coated with RTV. I = recall seeing some blobs of Hylomar in my coolant after doing the = rebuild on my 20B. Hopefully, it isn't plugging up the radiator. A = bore scope would be nice to have to look down inside my radiator to see = if I'm fretting over nothing. I would hate to waste a lot of effort = reworking my cooling system only to have it turn out to be a partially = plugged radiator (like Perry Mick's experience). As I see it, the = radiator is serving as a filter for the cooling system. =20 =20 Mark S. =20 Clearly it does happen, just makes me wonder why it does in some cases = and does not in others. =20 ------=_NextPart_000_002D_01C51E44.884F3970 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I agree, trying to fix the = problem that isn't=20 there can be frustrating in the extreme. In Perry's case, I=20 certainly understand the use of the "Radiator Stop-Leak" if you are out = and need=20 to get home as an "emergency" measure, but on the other hand I don't = think a=20 screen would necessarily have made any difference in his case. = Once you=20 put something like that in your system then you have compromised it to a = degree.

But, then that is what this is all = about - some=20 perceive risks where others do not and hence take a step to alleviate = said=20 risk. However, I can see some folks using a screen and never = having a=20 problem (just like some of us flying have not (at least thus far) had a = problem=20 with gunk in the coolant system) and others using a screen and perhaps = getting=20 flow restriction or stoppage and others (who inspect regularly) showing = where a=20 screen has perhaps stopped gunk from flowing into the = radiator..

My personal viewpoint is to minimize = the number of=20 components, but will readily admit to have screens and filters in my = fuel line -=20 so perhaps the having same in the coolant lines is no different (at = least in=20 concept). {:>)

Ed A

----- Original Message -----
From:=20 Mark R Steitle =
To: Rotary motors in = aircraft

Sent: Tuesday, March 01, 2005 = 9:32=20 AM

Subject: [FlyRotary] Re: = Filterr or not=20 to Filter: [FlyRotary] Re: FW: Cooling system update

Ed,

I think you = hit the=20 nail on the head. It likely has a lot to do with how much = squeeze-out=20 one has on mating surfaces coated with RTV. I recall seeing some = blobs=20 of Hylomar in my coolant after doing the rebuild on my 20B. = Hopefully,=20 it isn=92t plugging up the radiator. A bore scope would be nice = to have to=20 look down inside my radiator to see if I=92m fretting over = nothing. I=20 would hate to waste a lot of effort reworking my cooling system only = to have=20 it turn out to be a partially plugged radiator (like Perry Mick=92s=20 experience). As I see it, the radiator is serving as a filter = for the=20 cooling system.

Mark=20 S.

=20

Clearly it does=20 happen, just makes me wonder why it does in some cases and does not in = others.

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