X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost01.isp.att.net ([207.115.11.51] verified) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4912885 for flyrotary@lancaironline.net; Sun, 20 Mar 2011 18:36:42 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.51; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-145-79.mco.bellsouth.net[98.85.145.79]) by isp.att.net (frfwmhc01) with SMTP id <20110320223606H01007vup8e>; Sun, 20 Mar 2011 22:36:06 +0000 X-Originating-IP: [98.85.145.79] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: On the subject of installations... Date: Sun, 20 Mar 2011 18:36:08 -0400 Message-ID: <695A7D0B6C0E4968A171DB46C9E7F0D8@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01CBE72D.AE3FC330" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcvnSVQcHIv0uGD/Ree4V815bCMYQgABRRIg X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_000F_01CBE72D.AE3FC330 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Kelly, My radiator is fed by a single nostril on the right side of the cowl. It is about 5.5 inches in diameter. I am also stealing a little air from the oil inlet using a 3 inch flex hose which augments the inlet from the nostril for the radiator. My theory of the oil cooler block is that would slightly reduce the flow of air into the cowl from the oil cooler, which would allow more air to flow thru the radiator. It might possibly increase the pressure inside the inlet to the oil cooler, which could increase the air flow thru the 3 inch flex tube as well???? Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer Sent: Sunday, March 20, 2011 5:53 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: On the subject of installations... Bill, Sounds like you definitely need more outlet area and separating your radiator and oil cooler inlet is a good idea also but I would do one at a time so you can judge how effective each change is..............IMHO..............<:) Kelly Troyer "DYKE DELTA JD2" (Eventually) "13B ROTARY"_ Engine "RWS"_RD1C/EC2/EM2 "MISTRAL"_Backplate/Oil Manifold "TURBONETICS"_TO4E50 Turbo _____ From: Bill Bradburry To: Rotary motors in aircraft Sent: Sun, March 20, 2011 4:29:07 PM Subject: [FlyRotary] On the subject of installations... My water temp has been running between 199 and 217, depending on the OAT. The oil is pretty steady at around 175. Today I finally got to fly with pressure probes inside the cowling. I was all set to try and enlarge the inlet to the radiator to solve the problem. It turns out that "in" is not the problem, it is "out" that is the problem! I have 10 inches of Hg pressure in the radiator inlet and 10 inches of Hg on the outlet side as well as the same pressure everywhere I measured inside the cowl. I need to open up the cowl some so more air can get out. I had considered a cowl flap but that would not work in this instance because the problem is at cruise. I need a permanent opening. I am considering louvers and I am looking for a source. I know some of you are using them. Where did you get them and how are they installed so that they look ok? I am also considering some kind of flare around the exit area to create a low pressure area to help suck air out. Do any of you have those and do they seem to work? While I look into this, I also need to do something about my muffler.Thank you, Bobby! I wonder about that spiral muffler some of you are trying?? Bill B 9 hours and counting. By the way, I was considering putting a 1 or 2 inch wide piece of cardboard across the bottom of the oil cooler to partially block it in the hopes that more air would then flow through the radiator. Sort of like truckers do with the radiator in cold weather. What opinions do you have about that idea? I realize it would make more sense if the oil was really cool, but I think the oil might not get much hotter if an inch or so was blocked. What do you think??? ------=_NextPart_000_000F_01CBE72D.AE3FC330 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Kelly,

 

My radiator is fed by a single = nostril on the right side of the cowl.  It is about 5.5 inches in = diameter.  I am also stealing a little air from the oil inlet using a 3 inch flex hose = which augments the inlet from the nostril for the radiator.  My theory of = the oil cooler block is that would slightly reduce the flow of air into the = cowl from the oil cooler, which would allow more air to flow thru the radiator.  It might possibly increase the pressure inside the inlet = to the oil cooler, which could increase the air flow thru the 3 inch flex tube = as well????

 

Bill B

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
Sent: Sunday, March 20, = 2011 5:53 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = On the subject of installations...

 

Bill,

  Sounds like you definitely need more outlet = area and separating your radiator

and oil cooler inlet is a good idea also but I would = do one at a time so you can

judge how effective each change is..............IMHO..............<:)
 

Kelly Troyer
"DYKE DELTA = JD2" = (Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E= 50 Turbo

 

 

From: Bill Bradburry <bbradburry@bellsouth.net>
To: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Sent: Sun, March 20, 2011 = 4:29:07 PM
Subject: [FlyRotary] On = the subject of installations...

My water temp has been running = between 199 and 217, depending on the OAT.  The oil is pretty steady at around 175.  Today I finally got to fly with pressure probes inside the cowling.  I was all set to try and enlarge the inlet to the = radiator to solve the problem.  It turns out that “in” is not the = problem, it is “out” that is the = problem!

 

I have 10 inches of Hg pressure in = the radiator inlet and 10 inches of Hg on the outlet side as well as the = same pressure everywhere I measured inside the cowl.  I need to open up = the cowl some so more air can get out.  I had considered a cowl flap = but that would not work in this instance because the problem is at cruise.  = I need a permanent opening.  I am considering louvers and I am looking for = a source.  I know some of you are using them.  Where did you get = them and how are they installed so that they look = ok?

 

I am also considering some kind of = flare around the exit area to create a low pressure area to help suck air = out.  Do any of you have those and do they seem to = work?

 

While I look into this, I also need = to do something about my muffler…Thank you, = Bobby!

 

I wonder about that spiral muffler = some of you are trying??

 

Bill B  9 hours and = counting…

 

By the way, I was considering = putting a 1 or 2 inch wide piece of cardboard across the bottom of the oil cooler to partially block it in the hopes that more air would then flow through = the radiator.  Sort of like truckers do with the radiator in cold weather.  What opinions do you have about that idea?  I = realize it would make more sense if the oil was really cool, but I think the oil = might not get much hotter if an inch or so was blocked.  What do you = think???

------=_NextPart_000_000F_01CBE72D.AE3FC330--