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 smtp104.mail.sc5.yahoo.com ([66.163.169.223] verified) by logan.com (CommuniGate Pro SMTP 4.3c4) with SMTP id 863825 for flyrotary@lancaironline.net; Sun, 10 Apr 2005 07:54:42 -0400 Received-SPF: none receiver=logan.com; client-ip=66.163.169.223; envelope-from=prvt_pilot@yahoo.com Received: from unknown (HELO stevehome) (prvt?pilot@24.136.242.117 with login) by smtp104.mail.sc5.yahoo.com with SMTP; 10 Apr 2005 11:53:56 -0000 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] SQ2000 flying again Date: Sun, 10 Apr 2005 07:57:01 -0400 Message-ID: <009b01c53dc4$687660c0$6401a8c0@workgroup.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_009C_01C53DA2.E164C0C0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.6604 (9.0.2911.0) Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 This is a multi-part message in MIME format. ------=_NextPart_000_009C_01C53DA2.E164C0C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Paul, For a pusher, your temps don't sounds too bad really. If my engine is hot when I take off, I can see coolant temperatures over 200. Normally my temps stabilize at about 180 coolant, and 160-170 on the oil. If I fly at reduced power, which I do to nurse my stock turbo along, I see coolant stabilize at 160 and oil about the same. If you have any leaks around the radiator, it can greatly reduce the coolant efficiency. I don't know how true it is, but I once heard that a 1/8" gap can result in as much as a 20% decrease in cooling efficiency. I think that you are much closer than you think on the temps. Steve Brooks (too much house building and not enough flying) -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Paul Sent: Sunday, April 10, 2005 1:34 AM To: Rotary motors in aircraft 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_009C_01C53DA2.E164C0C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Paul,

For a=20 pusher, your temps don't sounds too bad really. If my engine is = hot when I=20 take off, I can see coolant temperatures over 200. Normally my = temps=20 stabilize at about 180 coolant, and 160-170 on the oil. If I fly = at=20 reduced power, which I do to nurse my stock turbo along, I see coolant = stabilize=20 at 160 and oil about the same.

If you=20 have any leaks around the radiator, it can greatly reduce the coolant=20 efficiency. I don't know how true it is, but I once heard that a = 1/8" gap=20 can result in as much as a 20% decrease in cooling=20 efficiency.

I=20 think that you are much closer than you think on the = temps.

Steve=20 Brooks (too much house building and not enough = flying)

-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of = Paul
Sent:=20 Sunday, April 10, 2005 1:34 AM
To: Rotary motors in=20 aircraft
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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