Return-Path: Received: from fed1rmmtao12.cox.net ([68.230.241.27] verified) by logan.com (CommuniGate Pro SMTP 4.2b8) with ESMTP id 321856 for flyrotary@lancaironline.net; Wed, 14 Jul 2004 22:15:05 -0400 Received-SPF: error receiver=logan.com; client-ip=68.230.241.27; envelope-from=daveleonard@cox.net Received: from davidandanne ([68.111.224.107]) by fed1rmmtao12.cox.net (InterMail vM.6.01.03.02 201-2131-111-104-20040324) with SMTP id <20040715021432.FOTI26461.fed1rmmtao12.cox.net@davidandanne> for ; Wed, 14 Jul 2004 22:14:32 -0400 From: "DaveLeonard" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: New Scoop Date: Wed, 14 Jul 2004 19:14:39 -0700 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0066_01C469D6.CF557AA0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0066_01C469D6.CF557AA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Ed, Mark, I have a cowl flap. At first it seemed to do no good at all, but after about 5 hrs of flying around on a 90deg day testing it open and closed, it does seem to make about a 10-15 deg F difference (coolant) and cost me about 5 kts in cruise speed. It takes a long time for the change to manifest itself in my temperatures. Luckily I only seem to need it in climb even on a hot day. Looking back, it was worth the trouble. Dave Leonard -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Ed Anderson Sent: Wednesday, July 14, 2004 12:18 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: New Scoop Mark, I considered them in my early days when I was fighting high temps. But, once I solved that I have not really considered them. The only person I am aware of using them is Bill Eslick. You should contact him for details, but my impression was that while they appear to work in aiding cooling, they also acted like a speed brake dropping over 10MPH from his cruise. I believe he also found it very difficult to close them down against the air flow out of the cowl when he tried to close them to minimize drag. But, again contact Bill for the full skinny. Ed Ed Anderson RV-6A N494BW Rotary Powered Matthews, NC ----- Original Message ----- From: Mark Steitle To: Rotary motors in aircraft Sent: Wednesday, July 14, 2004 2:46 PM Subject: [FlyRotary] Re: New Scoop Ed, What are your thoughts on cowl flaps. Do you use them? Mark S. ------=_NextPart_000_0066_01C469D6.CF557AA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ed,=20 Mark,

I have=20 a cowl flap. At first it seemed to do no good at all, but after = about 5=20 hrs of flying around on a 90deg day testing it open and closed, it does = seem to=20 make about a 10-15 deg F difference (coolant) and cost me about 5 = kts in=20 cruise speed. It takes a long time for the change to manifest = itself in my=20 temperatures. Luckily I only seem to need it in climb even on a = hot=20 day. Looking back, it was worth the trouble.

Dave=20 Leonard

-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Ed=20 Anderson
Sent: Wednesday, July 14, 2004 12:18 = PM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] Re: New=20 Scoop

Mark,

I considered them in my early days = when I was=20 fighting high temps. But, once I solved that I have not really=20 considered them. The only person I am aware of using them is = Bill=20 Eslick. You should contact him for details, but my impression = was that=20 while they appear to work in aiding cooling, they also acted like a = speed=20 brake dropping over 10MPH from his cruise. I believe he also = found it=20 very difficult to close them down against the air flow out of the cowl = when he=20 tried to close them to minimize drag.

But, again contact Bill for the full=20 skinny.

Ed

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC

----- Original Message -----
From:=20 Mark Steitle
To: Rotary motors in = aircraft=20

Sent: Wednesday, July 14, = 2004 2:46=20 PM

Subject: [FlyRotary] Re: New=20 Scoop

Ed,
What are your thoughts on cowl=20 flaps. Do you use them?

Mark=20 S.

------=_NextPart_000_0066_01C469D6.CF557AA0--