Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 490704 for flyrotary@lancaironline.net; Fri, 29 Oct 2004 10:12:27 -0400 Received-SPF: none receiver=logan.com; client-ip=24.25.9.100; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-069-132-109-019.carolina.rr.com [69.132.109.19]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i9TEBqKk012807 for ; Fri, 29 Oct 2004 10:11:54 -0400 (EDT) Message-ID: <005901c4bdc1$4199c1f0$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Oil Thermostat?? Date: Fri, 29 Oct 2004 10:11:59 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0056_01C4BD9F.BA4573A0" 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_0056_01C4BD9F.BA4573A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: Perry Mick=20 To: Rotary motors in aircraft=20 Sent: Friday, October 29, 2004 9:12 AM Subject: [FlyRotary] Re: Oil Thermostat?? Ed Anderson wrote: 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 I tried that several years ago Ed. It's easy to plug the bypass hole = in the cooler with a 1/8" npt. It had no effect on my oil temp in = cruise, but I didn't like it because the oil ran way too cool on long = descents and it wouldn't warm up before taking off. Perry Thanks, Perry Your experience corresponds with what I figured the downside would = be with the thermostat plugged. So I will leave well-enough alone. Ed ------=_NextPart_000_0056_01C4BD9F.BA4573A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 Perry=20 Mick
Sent: Friday, October 29, 2004 = 9:12=20 AM
Subject: [FlyRotary] Re: Oil=20 Thermostat??



Ed Anderson wrote:
When I drained my oil in = preparation for the=20 flight to the Rotary Flyin, I decided to do it a bit = different.  My oil=20 cooler is the lowest point in the system and I decided that since = the oil=20 thermostat housing was on the bottom of the cooler that draining it = from=20 there would be the smart thing to do.
 
So I proceeded to unscrew the plug = - but, it=20 wasn't until everything shot into the oil bucket that I realized = that the=20 innards had a strong spring incorporated.  So SPLASH! = everything into=20 the oil bucket - not problem I fish out the components and then = realize that=20 the thermostat pellet will fit either way.  Of course, I did = not have=20 my Mazda engine manual since it was only a simply oil = change.
 
In my minds eye I recall seeing the = spring hit=20 the 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=20 all I had a 50/50 chance of being correct. 
 
So I replaced the thermostat back = in the=20 housing and screwed the plug on.  Fired up the engine - and = noticed=20 that while oil pressure was fine - the oil temperature did not budge = off the=20 bottom of the gauge even after a couple of minutes of running but = that the=20 coolant was already up to 120F.  Hummmm.
 
Decided not to put the cowling back = on until=20 after going home and consulting a manual.  Sure enough I had = installed=20 it backwards.
 
So went back out to day reverse the = thermostat=20 and 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=20 thermostat was removed or wedge permanently closed.  I know you = can not=20 just remove it 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
I tried that several years ago Ed. It's easy to plug the bypass = hole in=20 the cooler with a 1/8" npt. It had no effect on my oil temp in cruise, = but I=20 didn't like it because the oil ran way too cool on long descents and = it=20 wouldn't warm up before taking off.

Perry

Thanks, Perry
 
    Your experience = corresponds=20 with what I figured the downside would be with the thermostat = plugged. =20 So I will leave well-enough alone.
 
Ed
 
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