X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wr-out-0506.google.com ([64.233.184.229] verified) by logan.com (CommuniGate Pro SMTP 5.2.6) with ESMTP id 3069601 for flyrotary@lancaironline.net; Sun, 10 Aug 2008 07:43:02 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.229; envelope-from=cozy4pilot@gmail.com Received: by wr-out-0506.google.com with SMTP id c55so1127401wra.11 for ; Sun, 10 Aug 2008 04:42:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:reply-to:from:to:in-reply-to :subject:date:message-id:mime-version:content-type:x-priority :x-msmail-priority:x-mailer:x-mimeole:importance; bh=sZzt38b+BcciJzxGlhEXuQoCGXV9HEAfyRTBMnWSmBg=; b=jfyPuMWuhsvU9djGk4DzDRaO1vWDOvCQOWg2Y21qec6taMY3pc4k+265sGzHNubwVy Gu1MiClAzA7EK3hnZ1xTNlra4+I7S/cUhr8fDGJZc7kWcwd91z7Z+mLdhFnObWMqMMxC WEhK39DCU/GdW4lGncgmi5j9oHkZx6sE3KQrA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=reply-to:from:to:in-reply-to:subject:date:message-id:mime-version :content-type:x-priority:x-msmail-priority:x-mailer:x-mimeole :importance; b=AU6YSCUVd/Dlz2gyU/LUSIltBvKv9v5PQxFkrqUC6DubeBfGfrnqA0l6GGr9uc+HgF ODe5bOeDmexPbfE2zHlmHB6HPOR1MAcD+DAoug1wjTd28c4ljebOg3v90Jrkd3TFf6tB Ln0ahoJNQybJQEWKk6NTm51hYAE9vdP1b7HlE= Received: by 10.90.91.2 with SMTP id o2mr9104209agb.111.1218368542947; Sun, 10 Aug 2008 04:42:22 -0700 (PDT) Return-Path: Received: from HomePC ( [76.4.221.180]) by mx.google.com with ESMTPS id x55sm507055hsx.5.2008.08.10.04.42.21 (version=SSLv3 cipher=RC4-MD5); Sun, 10 Aug 2008 04:42:22 -0700 (PDT) Reply-To: From: "Steve Brooks" To: "Rotary motors in aircraft" In-Reply-To: Subject: RE: [FlyRotary] Re: 2nd flight on the new cooling system Date: Sun, 10 Aug 2008 07:41:01 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01C8FABC.6FA2E040" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16545 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0022_01C8FABC.6FA2E040 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit George, The cooling fan has some resistance when the power is off, and while I don’t know for sure, I doubt that it spins when the power is off. Form a longevity perspective of the bearings, I hope that it does not. Regards, Steve Brooks -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of George Lendich Sent: Saturday, August 09, 2008 5:47 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: 2nd flight on the new cooling system Steve, Does the cooling fan spin freely when turned off or does it remain static. Those temps are much better. George ( down under) I took the Cozy up this morning for the 2nd flight on the new cooling system. The OAT was 3 or 4 degrees warmer than the first flight, as it was 79 F when I took off. This time, I turned the cooling fan on while I was taxiing out to the runway. After the taxi and pre-flight checks, the oil was 135 F and the coolant was still reading pretty low. Maybe 115 to 120 or so. It is a little hard to read the analog gauge down on the low end of the scale. I took off and climbed up to about 1300 FT AGL, at which time I pulled the throttle back some and continued a cruise climb. The coolant was showing about 190F, and I didn’t think to check the oil temperature. Oil temperature has not been my issue. It has always been the coolant. The coolant temperature did still increase a little, even at the reduced power, but just up to 200 F. I was close to a low cloud layer at about 1800 AGL, so I throttle back some more and dropped the nose to level flight. I also turned off the cooling fan to see what the temperature would do on it’s own. The temperature steadily dropped to about 180 degrees within just a few minutes, and then stabilized there. I cruised around for a little while, flew over my house and circled it once, and then headed back to the airport. With the low cloud layer that had moved in, I really didn’t know if it was going to clear out or get thicker, so I flew the 5 minutes back to the airport, and made a normal landing. As I was ready to throttle back to descend about 800 feet to pattern altitude, and quick check of the coolant temperature showed about 160 degrees. Not bad at all, although I was probably flying at about 60% power. Still, it would have not been nearly that low before the new cooling system. Once I landed and was clearing the runway, I checked the temperatures again, and the coolant was less then 140 degrees after the glide in to land. Since I planned to wash the plane, and sometimes it starts hard after getting heat soaked sitting after a run, I turned on the cooling fan while a taxied over to the where the wash area is. After washing the plane, it started up pretty easily, so I guess that worked out also. So far so good. I like what I see so far on the radiator, and the cooling fan definitely gives me a lot more options. Steve Brooks Cozy N75CZ 13B turbo to read the an ------=_NextPart_000_0022_01C8FABC.6FA2E040 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ge= orge,

 

Th= e cooling fan has some resistance when the power is off, and while I = don’t know for sure, I doubt that it spins when the power is off.  Form a longevity perspective of the bearings, I hope = that it does not.

 

Re= gards,

 

St= eve Brooks

 

-----Original Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of George Lendich
Sent: Saturday, August = 09, 2008 5:47 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = 2nd flight on the new cooling system

 

Steve,<= /p>

Does the cooling fan spin freely when turned off or does it remain = static. <= /p>

Those temps are much better. <= /p>

George ( down under)

I took the Cozy up = this morning for the 2nd flight on the new cooling system.  The OAT was 3 or 4 degrees = warmer than the first flight, as it was 79 F when I took off. =

This time, I turned = the cooling fan on while I was taxiing out to the runway.  After the  = taxi and pre-flight checks, the oil was 135 F and the coolant was still = reading pretty low.  Maybe 115 to = 120 or so.  It is a little hard = to read the analog gauge down on the low end of the = scale.

 

I took off and = climbed up to about 1300 FT AGL, at which time I pulled the throttle back some and continued a cruise climb.  = The coolant was showing about 190F, and I didn’t think to check the = oil temperature.  Oil = temperature has not been my issue.  It has = always been the coolant.  The = coolant temperature did still increase a little, even at the reduced power, but = just up to 200 F.  I was close to = a low cloud layer at about 1800 AGL, so I throttle back some more and dropped the = nose to level flight.  I also = turned off the cooling fan to see what the temperature would do on it’s = own.  The temperature steadily = dropped to about 180 degrees within just a few minutes, and then stabilized = there.  =

 

I cruised around for = a little while, flew over my house and circled it once, and then headed = back to the airport.  With the low = cloud layer that had moved in, I really didn’t know if it was going to = clear out or get thicker, so I flew the 5 minutes back to the airport, and made a = normal landing.  As I was ready = to throttle back to descend about 800 feet to pattern altitude, and quick = check of the coolant temperature showed about 160 degrees.  Not bad at all, although I was probably flying at = about 60% power.  Still, it would = have not been nearly that low before the new cooling = system.

 

Once I landed and = was clearing the runway, I checked the temperatures again, and the coolant = was less then 140 degrees after the glide in to land.  Since I planned to wash the plane, and sometimes it = starts hard after getting heat soaked sitting after a run, I turned on the = cooling fan while a taxied over to the where the wash area is.  After washing the plane, it started up pretty easily, = so I guess that worked out also.

 

So far so good.  I like what I see so far on = the radiator, and the cooling fan definitely gives me a lot more = options.

 

Steve = Brooks

Cozy = N75CZ

13B turbo to read the = an

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