Return-Path: Received: from [216.52.245.18] (HELO ispwestemail1.mdeinc.com) by logan.com (CommuniGate Pro SMTP 4.2b3) with ESMTP id 84104 for flyrotary@lancaironline.net; Sat, 22 May 2004 10:30:58 -0400 Received: from 7n7z201 (unverified [67.136.146.25]) by ispwestemail1.mdeinc.com (Vircom SMTPRS 3.1.300.2) with SMTP id for ; Sat, 22 May 2004 07:30:50 -0700 Message-ID: <0c5801c44009$5e24f460$c8918843@7n7z201> From: "William" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] New cooling Ducts Date: Sat, 22 May 2004 08:44:38 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0BDB_01C43FD9.03F88BD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_0BDB_01C43FD9.03F88BD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ed, Since you are building two new ducts, I would like to propose that you = also install the thermistors so you can do the following set of tests = (briefly mentioned at SNF). Basically at a steady power setting in = flight, and potentially at different air speeds, measure the following = temperatures: Tin left, Tout left , Tout right 1. With your *current setup*, with one reshaped duct and one original = duct. 2. With your current left duct and one of the new ducts, and 3. with both new ducts. Since you are plumbed in series, and have identical rads, this will give = us information on the performance of the ducts. Bill Schertz KIS Cruiser # 4045 ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Friday, May 21, 2004 6:58 PM Subject: [FlyRotary] New cooling Ducts Well enough of that, since the new C drive will apparently enable the = engine to turn 1000 rpm higher, I decided that was good enough reason to = finish my experiment with the cooling duct that turned out well. Rather = than filling in the other duct with expandable foam, I've decided to = build two new ducts with the proper curve built into the walls. So will = be using the Streamline coordinate system (modified). Since there is = not enough space for the full distance, I will truncate the streamline = coordinates as I did on the test duct. Consultation with the gentleman = who wrote the excellent article on liquid cooling in the January 2004 = Sport Aviation and my own test indicated that as long as the duct was = truncated from the inlet end, the adverse effects on airflow should be = minimal. So, will get started on that probably next week early. Got the = coordinates laid out in my old Cadd package only to find out that its = printer drivers will not drive the new HP printer I recently got. So I = guess I'll try converting the CADD to a DWG file and go to one of the = CADD packages I acquired over the year but never really used to see if = they have the correct driver. One thing or the other. Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ------=_NextPart_000_0BDB_01C43FD9.03F88BD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ed,
Since you are building two new ducts, I = would like=20 to propose that you also install the thermistors so you can do the = following set=20 of tests (briefly mentioned at SNF).  Basically at a steady power = setting=20 in flight, and potentially at different air speeds, measure = the=20 following temperatures:
Tin left, Tout left , Tout = right
 
1. With your *current setup*, with one = reshaped=20 duct and one original duct.
2. With your current left duct and one = of the new=20 ducts, and
3. with both new ducts.
 
Since you are plumbed in series, and = have identical=20 rads, this will give us information on the performance of the=20 ducts.
Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Friday, May 21, 2004 6:58 = PM
Subject: [FlyRotary] New = cooling=20 Ducts

Well enough of that, since the new C = drive will=20 apparently enable the engine to turn 1000 rpm higher, I decided that = was good=20 enough reason to finish my experiment with the cooling duct that = turned out=20 well.  Rather than filling in the other duct with expandable = foam, I've=20 decided to build two new ducts with the proper curve built into the=20 walls.  So will be using the Streamline coordinate system=20 (modified).  Since there is not enough space for the full = distance, I=20 will truncate the streamline coordinates as I did on the test = duct. =20 Consultation with the gentleman who wrote the excellent article on = liquid=20 cooling in the January 2004 Sport Aviation and my own test=20  indicated   that as long as the duct was truncated = from the=20 inlet end, the adverse effects on airflow should be = minimal.
 
So, will get started on that probably = next week=20 early.  Got the coordinates laid out in my old Cadd package only = to find=20 out that its printer drivers will not drive the new HP printer I = recently=20 got.  So I guess I'll try converting the CADD to a DWG file and = go to one=20 of the CADD packages I acquired over the year but never really used to = see if=20 they have the correct driver. One thing or the other.
 
 
 
Ed Anderson
RV-6A N494BW Rotary=20 Powered
Matthews, NC
------=_NextPart_000_0BDB_01C43FD9.03F88BD0--