Return-Path: Received: from outgoing.bmi.net ([66.97.95.34] verified) by logan.com (CommuniGate Pro SMTP 4.2b3) with ESMTP id 85800 for flyrotary@lancaironline.net; Sun, 23 May 2004 11:37:25 -0400 Received: from v58zq (dialup-ras17-101.pdx.or.uspops.net [216.239.190.101]) by outgoing.bmi.net (Postfix) with SMTP id 540C951F for ; Sun, 23 May 2004 08:31:19 -0700 (PDT) Message-ID: <008301c440dc$b8786fe0$65beefd8@v58zq> From: "Thomas Phy" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Two problems solved, 2 more pop up... Date: Sun, 23 May 2004 08:43:39 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0080_01C440A2.0B3F6480" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0080_01C440A2.0B3F6480 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageDave, Some builders of Van's AC have similar problems with exhaust systems = too close to cowlings. Van's has a metal (stainless?) tape that you = install where needed. Other builders have installed either gill vents on = top of cowl, or a door controlled by cockpit accessible cable. Also, = when Mooney's put turbo's on some of their AC, you had to taxi and idle = for almost 15 min. after high power settings to let the temps come down. = Thom ----- Original Message -----=20 From: DaveLeonard=20 To: Rotary motors in aircraft=20 Sent: Saturday, May 22, 2004 11:15 PM Subject: [FlyRotary] Two problems solved, 2 more pop up... =20 New problem: melt down after shut down. That turbo has a lot of very = hot mass. I flow enough air through the cowl when running to keep = things cool. Right after shut down the cowl is just luke warm to the = touch. But 5 min after shutting down the turbo side of the cowl is too = hot to touch on the top and I can smell resin. It gets a little soft to = tap on it and it is starting to look a little mottled and maybe yellow = (if I let my immagineation run away). I have seen a couple of RVs with = drop down hatches in the top cowl to let heat out after shut down. Does = anyone have an idea about how hot I can let the fiberglass get? Bright = Ideas? ------=_NextPart_000_0080_01C440A2.0B3F6480 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Dave,
 Some builders of Van's AC have = similar=20 problems with exhaust systems too close to cowlings. Van's has a metal=20 (stainless?) tape that you install where needed. Other builders have = installed=20 either gill vents on top of cowl, or a door controlled by cockpit = accessible=20 cable. Also, when Mooney's put turbo's on some of their AC, you had to = taxi and=20 idle for almost 15 min. after high power settings to let the temps come = down.=20 Thom
----- Original Message -----
From:=20 DaveLeonard=20
Sent: Saturday, May 22, 2004 = 11:15=20 PM
Subject: [FlyRotary] Two = problems solved,=20 2 more pop up...
 
New=20 problem:  melt down after shut down.  That turbo has a lot = of very=20 hot mass.  I flow enough air through the cowl when running to = keep things=20 cool.  Right after shut down the cowl is just luke warm to the=20 touch.  But 5 min after shutting down the turbo side of the cowl = is too=20 hot to touch on the top and I can smell resin.  It gets a = little=20 soft to tap on it and it is starting to look a little mottled and = maybe=20 yellow (if I let my immagineation run away).  I have seen a = couple of RVs=20 with drop down hatches in the top cowl to let heat out after shut = down. =20 Does anyone have an idea about how hot I can let the fiberglass = get? =20 Bright Ideas?
 
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