Return-Path: Received: from [24.25.9.101] (HELO ms-smtp-02-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 489881 for flyrotary@lancaironline.net; Thu, 28 Oct 2004 15:27:04 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-069-132-109-019.carolina.rr.com [69.132.109.19]) by ms-smtp-02-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i9SJQW4S002916 for ; Thu, 28 Oct 2004 15:26:33 -0400 (EDT) Message-ID: <003b01c4bd24$0b0473d0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" Subject: Oil Thermostat?? Date: Thu, 28 Oct 2004 15:26:37 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0038_01C4BD02.83C31140" 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_0038_01C4BD02.83C31140 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable When I drained my oil in preparation for the flight to the Rotary Flyin, = I decided to do it a bit different. My oil cooler is the lowest point = in the system and I decided that since the oil thermostat housing was on = the bottom of the cooler that draining it from there would be the smart = thing to do. So I proceeded to unscrew the plug - but, it wasn't until everything = shot into the oil bucket that I realized that the innards had a strong = spring incorporated. So SPLASH! everything into the oil bucket - not = problem I fish out the components and then realize that the thermostat = pellet will fit either way. Of course, I did not have my Mazda engine = manual since it was only a simply oil change. In my minds eye I recall seeing the spring hit the bottom of the bucket = before I heard the heavy "Clunk" of the thermostat hit. So I finally = decided that the spring must have come out of the housing = first(forgetting that light travels faster than sound). After all I had = a 50/50 chance of being correct. =20 So I replaced the thermostat back in the housing and screwed the plug = on. Fired up the engine - and noticed that while oil pressure was fine = - the oil temperature did not budge off the bottom of the gauge even = after a couple of minutes of running but that the coolant was already up = to 120F. Hummmm. Decided not to put the cowling back on until after going home and = consulting a manual. Sure enough I had installed it backwards. So went back out to day reverse the thermostat and oil temps once more = responding normally. This got me to thinking that I fly without a coolant thermostat and = wondering whether oil temps would lower if the thermostat was removed or = wedge permanently closed. I know you can not just remove it or the oil = will by-pass the cooler. My question to those (Lynn?) who have more experience is what effect = would removing the oil thermostat on oil temperature?? Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ------=_NextPart_000_0038_01C4BD02.83C31140 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

When I drained my oil in preparation = for the flight=20 to the Rotary Flyin, I decided to do it a bit different. My oil = cooler is=20 the lowest point in the system and I decided that since the oil = thermostat=20 housing was on the bottom of the cooler that draining it from there = would be the=20 smart thing to do.

So I proceeded to unscrew the plug - = but, it wasn't=20 until everything shot into the oil bucket that I realized that the = innards had a=20 strong spring incorporated. So SPLASH! everything into the oil = bucket -=20 not problem I fish out the components and then realize that the = thermostat=20 pellet will fit either way. Of course, I did not have my Mazda = engine=20 manual since it was only a simply oil change.

In my minds eye I recall seeing the = spring hit the=20 bottom of the bucket before I heard the heavy "Clunk" of the thermostat=20 hit. So I finally decided that the spring must have come out of = the=20 housing first(forgetting that light travels faster than sound). = After all=20 I had a 50/50 chance of being correct.

So I replaced the thermostat back in = the housing=20 and screwed the plug on. Fired up the engine - and noticed that = while oil=20 pressure was fine - the oil temperature did not budge off the bottom of = the=20 gauge even after a couple of minutes of running but that the coolant was = already=20 up to 120F. Hummmm.

Decided not to put the cowling back on = until after=20 going home and consulting a manual. Sure enough I had installed it = backwards.

So went back out to day reverse the = thermostat and=20 oil temps once more responding normally.

This got me to thinking that I fly = without a=20 coolant thermostat and wondering whether oil temps would lower if the = thermostat=20 was removed or wedge permanently closed. I know you can not just = remove it=20 or the oil will by-pass the cooler.

My question to those (Lynn?) who have = more=20 experience is what effect would removing the oil thermostat on oil=20 temperature??

Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.com

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