X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-05.texas.rr.com ([24.93.47.44] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTP id 2285493 for flyrotary@lancaironline.net; Sun, 26 Aug 2007 10:34:10 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.93.47.44; envelope-from=clouduster@austin.rr.com Received: from [10.0.0.99] (cpe-70-113-77-184.austin.res.rr.com [70.113.77.184]) by ms-smtp-05.texas.rr.com (8.13.6/8.13.6) with ESMTP id l7QEXENo017044 for ; Sun, 26 Aug 2007 09:33:14 -0500 (CDT) Message-ID: <46D18F1F.5000203@austin.rr.com> Date: Sun, 26 Aug 2007 09:33:03 -0500 From: Dennis Haverlah User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Sam James "Rotary" Cowling Question References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------030004040606040401050706" X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. --------------030004040606040401050706 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Doug, I have the James cowl on my RV -7A. My propeller is a Catto 2 blade with a very wide cord near the spinner. To get the rear of the prop to clear the air inlet I used a 2 inch spacer on the RD-1C drive to move the prop foward.. I used a 14 inch spinner from Aircraft Spruce and extended the nose of the cowl about 1 inch to match the spinner. The added cowl extension made a great looking transitiion from the cowl to the spinner. Dennis H. Still in need of a little more cooling for my oil. DLOMHEIM@aol.com wrote: > For you guys who have "gone before" and installed a SJ Rotary Cowling, > did you find that the ring cut out on the top was actually set back > compared to the shark mouth intake lip on the bottom? I went and had > my cowling cut out virtually perfectly on the firewall side to give me > a uniform 3/8 inch gap between the cowling and spinner and then > I happened to pull my IV0 prop through a rotation and it hit the > intake opening! Since everything I have ever read says to adjust your > cowling to the spinner back plate I couldn't believe they built this > cowling with the intake sitting out further than the front top opening... > > Doug Lomheim > RV-9A; Preparing to to cut the aft side of the cowling some more... > > > > ------------------------------------------------------------------------ > Get a sneak peek of the all-new AOL.com > . --------------030004040606040401050706 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Doug,

I have the James cowl on my RV -7A. My propeller is a Catto 2 blade with a very wide cord near the spinner. To get the rear of the prop to clear the air inlet I used a 2 inch spacer on the RD-1C drive to move the prop foward.. I used a 14 inch spinner from Aircraft Spruce and extended the nose of the cowl about 1 inch to match the spinner. The added cowl extension made a great looking transitiion from the cowl to the spinner.

Dennis H.
Still in need of a little more cooling for my oil.
DLOMHEIM@aol.com wrote:

For you guys who have "gone before" and installed a SJ Rotary Cowling, did you find that the ring cut out on the top was actually set back compared to the shark mouth intake lip on the bottom? I went and had my cowling cut out virtually perfectly on the firewall side to give me a uniform 3/8 inch gap between the cowling and spinner and then I happened to pull my IV0 prop through a rotation and it hit the intake opening! Since everything I have ever read says to adjust your cowling to the spinner back plate I couldn't believe they built this cowling with the intake sitting out further than the front top opening...

Doug Lomheim

RV-9A; Preparing to to cut the aft side of the cowling some more...

Get a sneak peek of the all-new AOL.com.

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