X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [216.211.128.10] (HELO mail-in02.adhost.com) by logan.com (CommuniGate Pro SMTP 5.0.4) with ESMTP id 882160 for flyrotary@lancaironline.net; Wed, 14 Dec 2005 15:47:19 -0500 Received-SPF: none receiver=logan.com; client-ip=216.211.128.10; envelope-from=joeh@pilgrimtech.com Received: from Pilgrim10 (tide515.microsoft.com [131.107.0.85]) by mail-in02.adhost.com (Postfix) with ESMTP id D41D82EAC56 for ; Wed, 14 Dec 2005 12:46:07 -0800 (PST) (envelope-from joeh@pilgrimtech.com) From: "Joe Hull" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Cowl Exit Date: Wed, 14 Dec 2005 12:46:02 -0800 Message-ID: <002d01c600ef$6e9bb600$0708460a@redmond.corp.microsoft.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002E_01C600AC.60787600" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 Thread-Index: AcYA62857C0LD4U1QGaFhrwvM7VVuQAAnWZg This is a multi-part message in MIME format. ------=_NextPart_000_002E_01C600AC.60787600 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I can't help with the RV/tractor question - my plane is propelled from the proper end :-). Foam for molding from the lumber yard - if you're using epoxy without solvents then the pink Styrofoam/styrene has worked well for me (not the white Styrofoam it crumbles when sanded). Get 2" thick sheet, cut smaller blocks and glue together in a staggered fashion in the rough contour of your cowl. Sand off all the corners and shape with 40grit sand paper. 2-part pour foam is pretty good to work with for mold making too. But DON'T bother with the spray foam insulation (one brand is "Right Stuff"). It is rubbery and doesn't sand worth beans. The 2-part pour foam can be used in conjunction with the Styrofoam to glue the sheets together and fill voids and cracks and build back up places where you over-sand. Here are a bunch of pictures from building my cowls: http://www.maddyhome.com/canardpages/pages/JoeHull/Chap23Cowl.htm Regards, Joe Hull Cozy Mk-IV #991 (preping for DAR inspection - details, details) Redmond (Seattle), Washington _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of John Downing Sent: Wednesday, December 14, 2005 12:17 PM To: Rotary motors in aircraft Subject: [FlyRotary] Cowl Exit Looking back thru my notes, I seen a posting that Buly's plane needed 126 inch of outlet air to make the cooling system work. Is this amount necessary for tractor installations? At present I have an opening 4 - 1/4" x 11 - 1/4", with the exhaust to exit short of the opening to help siphon out the cowling heat. I really don't want to get everything buttoned up and find out it isn't going to cool. What are you fellows using on your RV's. Thankyou in advance. JohnD I need to get some foam for remolding the cowl, what can I get at the lumber yard that will sand and work well? ------=_NextPart_000_002E_01C600AC.60787600 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

I can’t help with the = RV/tractor question – my plane is propelled from the proper end = J.

 

Foam for molding from the lumber = yard – if you’re using epoxy without solvents then the pink = Styrofoam/styrene has worked well for me (not the white Styrofoam it crumbles when = sanded).  Get 2” thick sheet, cut smaller blocks and glue together in a = staggered fashion in the rough contour of your cowl.  Sand off all the = corners and shape with 40grit sand paper.

 

2-part pour foam is pretty good to = work with for mold making too. But DON’T bother with the spray foam = insulation (one brand is “Right Stuff”).  It is rubbery and = doesn’t sand worth beans.

The 2-part pour foam can be used in conjunction with the Styrofoam to glue the sheets together and fill = voids and cracks and build back up places where you over-sand. =

 

Here are a bunch of pictures from = building my cowls: = http://www.maddyhome.com/canardpages/pages/JoeHull/Chap23Cowl.htm

 

Regards,

Joe = Hull

Cozy Mk-IV #991 (preping for DAR = inspection - details, details)

Redmond (Seattle), Washington

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of John Downing
Sent: Wednesday, December = 14, 2005 12:17 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Cowl = Exit

 

Looking back thru my notes, I seen a posting that = Buly's plane needed 126 inch of outlet air to make the cooling system = work.  Is this amount necessary for tractor installations?  At present I have = an opening 4 - 1/4" x 11 - 1/4", with the exhaust to exit short = of the opening to help siphon out the cowling heat.  I really don't want = to get everything buttoned up and find out it isn't going to cool.  What = are you fellows using on your RV's.  Thankyou in advance.  = JohnD   I need to get some foam for remolding the cowl, what can I get at the = lumber yard that will sand and work well?

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