X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.25.9.102] verified) by logan.com (CommuniGate Pro SMTP 5.1.11) with ESMTP id 2286918 for flyrotary@lancaironline.net; Mon, 27 Aug 2007 07:55:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.102; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-03.southeast.rr.com (8.13.6/8.13.6) with SMTP id l7RBspfq024015 for ; Mon, 27 Aug 2007 07:54:51 -0400 (EDT) Message-ID: <002101c7e8a1$30d9d770$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] N4VY flys again Date: Mon, 27 Aug 2007 07:55:40 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001E_01C7E87F.A9700550" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_001E_01C7E87F.A9700550 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Great to see you back in the air, Dave. Cooling would appear to be = doing fine. 50" of boost will put it to the test {:>) Ed ----- Original Message -----=20 From: David Leonard=20 To: Rotary motors in aircraft=20 Sent: Sunday, August 26, 2007 11:35 PM Subject: [FlyRotary] N4VY flys again After a year and a half of deployment and assorted upgrades, my RV-6 = finally got back in the skys. And she did great. The most significant upgrade was the new cowl and new larger radiator. = (see picture). Some of you may have participated in the 'smiley' cowl = vs. 'OH' cowl debate. Smiley cowl won on the basis of aesthetics, but = there was a concern that that boundary layer issues (and the fact that = the intake is several inches back from the prop) would prevent adequate = cooling. The other concern of mine was exit air balance between coolant = and oil. Both issues seemed to not be a significant factor. Oil and = water temps now were essentially the same, with the oil just slightly = warmer. Temps for both peaked at about 150, despite the mid 80's = ambient temp and a warm-soaked engine (I am living at a tie-down now = adays). I limited my MAP to 30" and was at 26" for most of the flight = (at 6500'), but those temps should allow continuous power well into the = mid 30's for MAP. =20 I made what I thought was a light weight and well designed cowl flap = integrated into the radiator mount (see open/closed pictures), but as = was my prior experience, the cowl flap did not have much authority to = affect the cooling system. The only difference today was that my temps = are borderline too cold, instead of borderline too hot.=20 I am expecting some increased cooling drag from the BAI (big ass = intake), but at least it was not remarkable enough to notice on this = flight. More accurate data to follow. Other upgrades included new nav antenna, marker antenna, subdued = satellite antennas, muffler, new interior, and about 50 smaller items = and I was pleased with all. In fact, my biggest issue with todays = flight was that Sirius radio does not come in very well while upside = down and the MP3 player is the best option for aerobatics. Maybe I = should have gotten XM, but the Sirius radios all come detachable so that = I can easily use the same radio in my car and plane.=20 Any day you fly instead of build is a great day :-) --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net=20 -------------------------------------------------------------------------= ----- -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_001E_01C7E87F.A9700550 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Great to see you back in the air, Dave.  = Cooling=20 would appear to be doing fine.  50" of boost will put it to the = test=20 {:>)
 
Ed
----- Original Message -----
From:=20 David=20 Leonard
Sent: Sunday, August 26, 2007 = 11:35=20 PM
Subject: [FlyRotary] N4VY flys=20 again

After a year and a half of deployment and assorted = upgrades, my=20 RV-6 finally got back in the skys.  And she did great.

The = most=20 significant upgrade was the new cowl and new larger radiator. (see=20 picture).  Some of you may have participated in the 'smiley' cowl = vs.=20 'OH' cowl debate.  Smiley cowl won on the basis of aesthetics, = but there=20 was a concern that that boundary layer issues (and the fact that the = intake is=20 several inches back from the prop) would prevent adequate = cooling.  The=20 other concern of mine was exit air balance between coolant and = oil.  Both=20 issues seemed to not be a significant factor.  Oil and water = temps now=20 were essentially the same, with the oil just slightly warmer.  = Temps for=20 both peaked at about 150, despite the mid 80's ambient temp and a = warm-soaked=20 engine (I am living at a tie-down now adays).  I limited my MAP = to 30"=20 and was at 26" for most of the flight (at 6500'), but those temps = should allow=20 continuous power well into the mid 30's for MAP. 

I made = what I=20 thought was a light weight and well designed cowl flap integrated into = the=20 radiator mount (see open/closed pictures), but as was my prior = experience, the=20 cowl flap did not have much authority to affect the cooling = system.  The=20 only difference today was that my temps are borderline too cold, = instead of=20 borderline too hot.

I am expecting some increased cooling drag = from=20 the BAI (big ass intake), but at least it was not remarkable enough to = notice=20 on this flight.  More accurate data to follow.

Other = upgrades=20 included new nav antenna, marker antenna, subdued satellite antennas, = muffler,=20 new interior, and about 50 smaller items and I was pleased with = all.  In=20 fact, my biggest issue with todays flight was that Sirius radio does = not come=20 in very well while upside down and the MP3 player is the best option = for =20 aerobatics. Maybe I should have gotten XM, but the Sirius radios all = come=20 detachable so that I can easily use the same radio in my car and = plane.=20

Any day you fly instead of build is a great day  :-)
--
David Leonard

Turbo Rotary RV-6 = N4VY
http://N4VY.RotaryRoster.nethttp://RotaryRoster.net=20

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Homepage:  http://www.flyrotary.com/
Archive and=20 UnSub:  =20 = http://mail.lancaironline.net:81/lists/flyrotary/List.html
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