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 imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.3c4) with ESMTP id 864372 for flyrotary@lancaironline.net; Sun, 10 Apr 2005 20:35:49 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.65; envelope-from=sqpilot@bellsouth.net Received: from paul52u7f5qyav ([209.214.44.228]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with SMTP id <20050411003504.IAJJ4997.imf17aec.mail.bellsouth.net@paul52u7f5qyav> for ; Sun, 10 Apr 2005 20:35:04 -0400 Message-ID: <002b01c53e2e$472a0100$e42cd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: SQ2000 flying again Date: Sun, 10 Apr 2005 19:34:51 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0028_01C53E04.5D895600" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0028_01C53E04.5D895600 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, John....the only thing you are missing is that I used to be able to = cool down in the climb. Now, at the same throttle setting, I can not. = Only addition has been the ram air scoop dumping air in the vicinity of = the throttlebody. (High pressure air being forced into a low pressure = area of the cowling). I believe that is hindering the ability of the air = to enter the NACA duct and go through the radiator. Paul Conner ----- Original Message -----=20 From: John Slade=20 To: Rotary motors in aircraft=20 Sent: Sunday, April 10, 2005 6:45 AM Subject: [FlyRotary] Re: SQ2000 flying again Great Paul, but what's wrong with those temps and what are your = targets? Obviously the temps are going to be a bit higher if you're = producing more power. I remember Leon saying that the most efficient = operating temp, at least for a 3rd gen REW, was around 180F. 220F was, = I'm pretty sure he said, the red line and you don't want to be there for = long. If you can cruise at 190 at, presumably, fairly low altitude then = I'd say you're about right and you'll get 180 on a high altitude cruise. Am I missing something here? John 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 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.5 - Release Date: 4/7/2005 ------=_NextPart_000_0028_01C53E04.5D895600 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi, John....the only thing you are = missing is that=20 I used to be able to cool down in the climb. Now, at the same throttle = setting,=20 I can not. Only addition has been the ram air scoop dumping air in the = vicinity=20 of the throttlebody. (High pressure air being forced into a low pressure = area of=20 the cowling). I believe that is hindering the ability of the air to = enter the=20 NACA duct and go through the radiator.  Paul Conner
 
----- Original Message -----
From:=20 John=20 Slade
Sent: Sunday, April 10, 2005 = 6:45=20 AM
Subject: [FlyRotary] Re: SQ2000 = flying=20 again

Great Paul, but what's wrong with those temps and what are = your=20 targets? Obviously the temps are going to be a bit higher if you're = producing=20 more power. I remember Leon saying that the most = efficient operating=20 temp, at least for a 3rd gen REW, was around 180F.  220F was, I'm = pretty=20 sure he said, the red line and you don't want to be there for long.=20 If you can cruise at 190 at, presumably, fairly low altitude = then I'd=20 say you're about right and you'll get 180 on a high altitude=20 cruise.
Am I=20 missing something here?
John
 
 I flew the SQ2000 today. The = engine is=20 running great, now that I have a seperate water temp sender for the = ECU and=20 another for the engine monitor. The outside air temp was 80 degrees, = and I am=20 very 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=20 powered SQ2000 in Mobile, AL

No virus found in this incoming message.
Checked by AVG=20 Anti-Virus.
Version: 7.0.308 / Virus Database: 266.9.5 - Release = Date:=20 4/7/2005
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