X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop-Diagnostic: (direct reply)\eX-PolluStop-Score: 0.00\eX-PolluStop: Scanned with Niversoft PolluStop 2.1 RC1, http://www.niversoft.com/pollustop Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.3c4) with ESMTP id 863820 for flyrotary@lancaironline.net; Sun, 10 Apr 2005 08:04:36 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.100; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-185-127.carolina.res.rr.com [24.74.185.127]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j3AC3mLw021014 for ; Sun, 10 Apr 2005 08:03:50 -0400 (EDT) Message-ID: <020401c53dc5$6385ec60$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] SQ2000 flying again Date: Sun, 10 Apr 2005 08:04:03 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0201_01C53DA3.DC317700" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0201_01C53DA3.DC317700 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Paul, Far from discouraging, I think your temps are quite reasonable for the = regime of flight you are in. If you don't heat up a bit during climb, = then for sure you have more cooling capacity than needed at cruise - = which is not necessarily bad except from a drag standpoint. The sleeker = the aircraft the higher percentage of total drag the cooling drag is. = My coolant is red-lined at 220F (and I have exceeded that all the way up = to 240F), my oil is redlined at 210F and thus far I have not exceeded = that limit. John is correct as well, more power will produce more heat - so again = something to cheer about. Sealing off even small leaks will help considerably - that is one reason = I went with the fiberglass ducts total enclosing my radiator face and = nowhere for the air to go but through the core. In Any case, sounds like things are progressing nicely to me. Ed A ----- Original Message -----=20 From: Paul=20 To: Rotary motors in aircraft=20 Sent: Sunday, April 10, 2005 1:33 AM Subject: [FlyRotary] SQ2000 flying again I flew the SQ2000 today. The engine is running great, now that I have = a seperate water temp sender for the ECU and another for the engine = monitor. The outside air temp was 80 degrees, and I am very disappointed = with my coolant temps. The water temp hit 205 during the climb. Temps = slowly came back down to 190 once I was in level flight, and dropped to = 170 on short final. Very disappointing. (oil temps were fine). I am = going to seal all the gaps around the radiator first, and see if that = helps. I am concerned that the new ram air scoop I made to bring in = cool air to the throttlebody might be pressurizing the rear of the = cowling, and inhibiting the induction of air through the radiator. I = will try sealing around the radiator first. If that fails to bring the = temps down, I will try removing the ram air scoop and installing a NACA = scoop with a hose to bring air directly to the throttlebody, and not = dump it into the low pressure area of the cowling. If that fails, I = think I will take up fishing or golf. Paul Conner, 13b powered SQ2000 in Mobile, AL ------=_NextPart_000_0201_01C53DA3.DC317700 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Paul,
 
Far from discouraging, I think your = temps are quite=20 reasonable for the regime of flight you are in.  If you don't heat = up a bit=20 during climb, then for sure you have more cooling capacity than needed = at cruise=20 - which is not necessarily bad except from a drag standpoint.  The = sleeker=20 the aircraft the higher percentage of total drag the cooling drag=20 is.   My coolant is red-lined at 220F (and I have exceeded = that all=20 the way up to 240F), my oil is redlined at 210F and thus far I have not = exceeded=20 that limit.
 
John is correct as well, more power = will produce=20 more heat - so again something to cheer about.
 
Sealing off even small leaks will help = considerably=20 - that is one reason I went with the fiberglass ducts total enclosing my = radiator face and nowhere for the air to go but through the = core.
 
In Any case, sounds like things are = progressing=20 nicely to me.
 
Ed A
----- Original Message -----
From:=20 Paul=20
Sent: Sunday, April 10, 2005 = 1:33=20 AM
Subject: [FlyRotary] SQ2000 = flying=20 again

I flew the SQ2000 today. The engine = is running=20 great, now that I have a seperate water temp sender for the ECU and = another=20 for the engine monitor. The outside air temp was 80 degrees, and I am = very=20 disappointed with my coolant temps. The water temp hit 205 during the=20 climb.  Temps slowly came back down to 190 once I was in level = flight,=20 and dropped to 170 on short final. Very disappointing. (oil temps = were=20 fine).  I am going to seal all the gaps around the radiator = first, and=20 see if that helps.  I am concerned that the new ram air scoop I = made to=20 bring in cool air to the throttlebody might be pressurizing the rear = of the=20 cowling, and inhibiting the induction of air through the radiator. I = will try=20 sealing around the radiator first. If that fails to bring the temps = down, I=20 will try removing the ram air scoop and installing a NACA scoop with a = hose to=20 bring air directly to the throttlebody, and not dump it into the low = pressure=20 area of the cowling.  If that fails, I think I will take up = fishing or=20 golf.
     Paul Conner, = 13b powered=20 SQ2000 in Mobile, AL
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