X-Virus-Scanned: clean according to Sophos on Logan.com From: "Bill Schertz" Received: from mail-pd0-f175.google.com ([209.85.192.175] verified) by logan.com (CommuniGate Pro SMTP 6.1.2) with ESMTPS id 7694943 for flyrotary@lancaironline.net; Fri, 15 May 2015 22:34:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.192.175; envelope-from=wschertz343@gmail.com Received: by pdbqa5 with SMTP id qa5so41035206pdb.0 for ; Fri, 15 May 2015 19:33:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:from:to:references:in-reply-to:subject:date:mime-version :content-type:importance; bh=TKNM1clK0pEaAD+qfql26EgVzyJiQuWMVNNUTqeYmdc=; b=kSo6LzLi6riGMLF0lrD+GN0IdvgKww3d5947vDH7TdUEHJmUADQc392sMbDEDc7i4l 9E3aTsqGHayiT/sG/3vfMofI8FQKR5E5Tm0jCwAlDRaRiH5NwVNj6yOjhiB4zJIaA0Ec FEaXy4Ny+wx2kALoLVOkRze8MAPlsHW2irpD3CS7mZ5KP0yvR/Ek8H671BgjhDzgoh24 hTbGTRMUJq06A7cddwjyv8txMVbU4lwftSj6dnOGfT55JcGd/PBa/0YEyrw3/mWp1quY o4n6KWGmqZeBA1X9l7j8GGfH88wyWH05nc70FQOAxhGVvAIc3e21BcxgE94fWZSG9gCD R7OA== X-Received: by 10.66.159.106 with SMTP id xb10mr23014815pab.129.1431743611691; Fri, 15 May 2015 19:33:31 -0700 (PDT) Return-Path: Received: from OwnerPC (host-69-144-253-108.rvt-wy.client.bresnan.net. [69.144.253.108]) by mx.google.com with ESMTPSA id d3sm3111681pbu.93.2015.05.15.19.33.29 for (version=TLSv1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 15 May 2015 19:33:30 -0700 (PDT) Message-ID: To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Return to Flight - 2 Date: Fri, 15 May 2015 20:33:17 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_008B_01D08F4E.600A4050" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 This is a multi-part message in MIME format. ------=_NextPart_000_008B_01D08F4E.600A4050 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Jeff, I tried to send a scan of a sketch that showed the manometer = board, but it was too big. If interested, send me your email and = I=E2=80=99ll send it direct. From: Bill Schertz=20 Sent: Friday, May 15, 2015 10:50 AM To: Rotary motors in aircraft=20 Subject: Re: [FlyRotary] Return to Flight - 2 Jeff, Before you do all that modification, try a couple of flights using a = manometer to measure the pressure in front of the radiators, and behind = the radiators under the cowl. It might shed some light on where the = problem lies. A manometer board is easy to make, just some tygon tubing on a support = board with some colored water in them. Take a flight and either take = picture of position, or write them down. Also, make only one change at a = time so you know what each effect is. Bill From: Jeff Whaley=20 Sent: Friday, May 15, 2015 9:19 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Return to Flight - 2 Well, the second flight occurred last night with same results as before; = one short low-level circuit due to insufficient cooling =E2=80=A6 looks = like Al Wick made the correct prediction. There are 3 things I can try with the current configuration: 1) Increase = inlet area 2) Increase outlet area (adjustable cowl flap) 3) Re-profile = the pinched diffuser. I will do all 3 and see what happens. If all of the above show remarkable improvement then repositioning the = radiator is the only alternative. Jeff =20 ------=_NextPart_000_008B_01D08F4E.600A4050 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Jeff, I tried to send a scan of a sketch that showed the manometer = board,=20 but it was too big. If interested, send me your email and I=E2=80=99ll = send it=20 direct.
 
Sent: Friday, May 15, 2015 10:50 AM
Subject: Re: [FlyRotary] Return to Flight - = 2
 
Jeff,
Before you do all that modification, try a couple of flights using = a=20 manometer to measure the pressure in front of the radiators, and behind = the=20 radiators under the cowl. It might shed some light on where the problem=20 lies.
 
A manometer board is easy to make, just some tygon tubing on a = support=20 board with some colored water in them. Take a flight and either take = picture of=20 position, or write them down. Also, make only one change at a time so = you know=20 what each effect is.
Bill
 
Sent: Friday, May 15, 2015 9:19 AM
Subject: [FlyRotary] Return to Flight - 2
 

Well,=20 the second flight occurred last night with same results as before; one = short=20 low-level circuit due to insufficient cooling =E2=80=A6 looks like Al = Wick made the=20 correct prediction.

There=20 are 3 things I can try with the current configuration: 1) Increase inlet = area 2)=20 Increase outlet area (adjustable cowl flap) 3) Re-profile the pinched=20 diffuser.  I will do all 3 and see what = happens.

If=20 all of the above show remarkable improvement then repositioning the = radiator is=20 the only alternative.

Jeff

 

 
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