X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from willowsprings.uwyo.edu ([129.72.10.31] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTPS id 3836530 for flyrotary@lancaironline.net; Fri, 04 Sep 2009 12:15:58 -0400 Received-SPF: none receiver=logan.com; client-ip=129.72.10.31; envelope-from=SBoese@uwyo.edu Received: from ponyexpress-ht1.uwyo.edu (ponyexpress-ht1.uwyo.edu [10.84.60.208]) by willowsprings.uwyo.edu (8.14.2/8.14.2) with ESMTP id n84GFHCX006077 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO) for ; Fri, 4 Sep 2009 10:15:19 -0600 (MDT) (envelope-from SBoese@uwyo.edu) Received: from Boesexps (172.26.4.5) by uwmail.uwyo.edu (10.84.60.198) with Microsoft SMTP Server id 8.1.393.1; Fri, 4 Sep 2009 10:15:18 -0600 From: sboese To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] renesis radiator design Date: Fri, 4 Sep 2009 10:14:14 -0600 Message-ID: <3E284FB92AAE4427A60ADC8EF46D63B4@gg.uwyo.edu> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01CA2D48.775E1470" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 In-Reply-To: Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 ------=_NextPart_000_0022_01CA2D48.775E1470 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Kevin, =20 See the embedded comment below. =20 Steve Boese =20 =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of kevin lane Sent: Thursday, September 03, 2009 11:15 PM To: Rotary motors in aircraft Subject: [FlyRotary] renesis radiator design =20 I am finally getting to the radiator plumbing and want to confirm what = I'm about to do. I have a single, custom radiator on the cool side of the engine. I plan to run dash 16 lines from it to the inlet/outlet of the water pump. "T'd" into one of these lines will be a what, dash 4,6(?), = line from the bottom of the fill tank(1.5qts), which will also have a small = line to an overflow tank. does the fill tank "T" to the pump input or output line? for clarity, are we calling the output the top or bottom port?=20 it was mentioned that I may get by without a swirl pot, however, I will = need a small (-4?) line for air bubbles tapped from the top of the water pump back to the fill tank, as well as a line from the high point of the = radiator back to the fill tank, both of these entering the fill tank above the = fluid level line. am I missing anything? You might consider having the lines enter the fill tank at a level below the normal operating fluid level line. On my system, at = least, where I am using a thermostat, the direction of flow through the air elimination lines changes direction depending on the amount of = thermostat opening. Although I would not have predicted this, the behavior makes = sense when the details of the system in operation are observed. My = predictions are often discarded in the face of actual observations. If there is a concern about filling the system initially, the air elimination lines = could be located above the normal coolant level when the system is cold but = below the coolant level when the coolant has expanded during engine operation. With a warm system the air passing through these lines just bubbles to = the top in the fill tank, so I don't see a down side to doing this. It just eliminates a possible problem if things don't work exactly as expected. =20 can the water pump and radiator air bubble line "T" together before entering the fill tank? is there an air bubble line needed off the = rotor housings? if I install a Schrader valve to pressurize the system, does = it matter where? [ I suppose somewhere that doesn't involve removing the cowling]. kevin [gave up finding a plug for the oil pressure sender, = must be 10mm x 1.25 threads? 10mm x 1 doesn't feel right, and just screwed it back in.] ------=_NextPart_000_0022_01CA2D48.775E1470 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Kevin,

 

See the embedded comment = below.

 

Steve Boese

 

 

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of kevin lane
Sent: Thursday, September = 03, 2009 11:15 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] = renesis radiator design

 

I am finally = getting to the radiator plumbing and want to confirm what I'm about to do.  I = have a single, custom radiator on the cool side of the engine.  I plan to = run dash 16 lines from it to the inlet/outlet of the water pump.  = "T'd" into one of these lines will be a what, dash 4,6(?), line from the = bottom of the fill tank(1.5qts), which will also have a small line to an overflow tank.  does the fill tank "T" to the pump input or output = line? for clarity, are we calling the output the top or bottom port? =

it was mentioned = that I may get by without a swirl pot, however, I will need a small (-4?) line = for air bubbles tapped from the top of the water pump back to the fill tank, as = well as a line from the high point of the radiator back to the fill tank, both = of these entering the fill tank above the fluid level line.  am I missing = anything?

      =       You might consider having the lines enter the fill tank at a level below the = normal operating fluid level line.  On my system, at least, where I am = using a thermostat, the direction of flow through the air elimination lines = changes direction depending on the amount of thermostat opening.  Although = I would not have predicted this, the behavior makes sense when the details of = the system in operation are observed.  My predictions are often = discarded in the face of actual observations.  If there is a concern about = filling the system initially, the air elimination lines could be located above the = normal coolant level when the system is cold but below the coolant level when = the coolant has expanded during engine operation.  With a warm system = the air passing through these lines just bubbles to the top in the fill tank, so = I don’t see a down side to doing this.  It just eliminates a possible = problem if things don’t work exactly as expected.  =     

 

   can = the water pump and radiator air bubble line "T" together before entering = the fill tank?  is there an air bubble line needed off the rotor housings?  if I install a Schrader valve to pressurize the system, = does it matter where? [ I suppose somewhere that doesn't involve removing the cowling].    kevin [gave up finding a plug for the oil = pressure sender, must be 10mm x 1.25 threads? 10mm x 1 doesn't feel right, and = just screwed it back in.]

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