X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail09.syd.optusnet.com.au ([211.29.132.190] verified) by logan.com (CommuniGate Pro SMTP 5.2.6) with ESMTPS id 3069116 for flyrotary@lancaironline.net; Sat, 09 Aug 2008 17:47:47 -0400 Received-SPF: pass receiver=logan.com; client-ip=211.29.132.190; envelope-from=lendich@optusnet.com.au Received: from george (d58-105-122-139.dsl.nsw.optusnet.com.au [58.105.122.139]) by mail09.syd.optusnet.com.au (8.13.1/8.13.1) with SMTP id m79Lkwgr009971 for ; Sun, 10 Aug 2008 07:47:01 +1000 Message-ID: <003001c8fa69$787a2500$6400a8c0@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] 2nd flight on the new cooling system Date: Sun, 10 Aug 2008 07:47:05 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002D_01C8FABD.48C54570" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Antivirus: avast! (VPS 080809-0, 09/08/2008), Outbound message X-Antivirus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_002D_01C8FABD.48C54570 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Steve, Does the cooling fan spin freely when turned off or does it remain = static.=20 Those temps are much better.=20 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.=20 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. =20 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. =20 =20 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. =20 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. =20 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. =20 Steve Brooks Cozy N75CZ 13B turbo to read the an ------=_NextPart_000_002D_01C8FABD.48C54570 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Steve,
Does the cooling fan spin freely when = turned off or=20 does it remain static. 
Those temps are much = better. 
George ( down under)

I took=20 the Cozy up this morning for the 2nd flight on the new = cooling=20 system.  The OAT was 3 = or 4=20 degrees warmer than the first flight, as it was 79 F when I took off.=20

This=20 time, I turned the cooling fan on while I was taxiing out to the = runway.  After the  taxi and pre-flight checks, = the oil=20 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=20 gauge down on the low end of the = scale.

 

I took=20 off and climbed up to about 1300 FT AGL, at which time I pulled the = throttle=20 back some and continued a cruise climb. =20 The coolant was showing about 190F, and I didn=92t think to = check the oil=20 temperature.  Oil = temperature has=20 not been my issue.  It = has always=20 been the coolant.  The = coolant=20 temperature did still increase a little, even at the reduced power, = but just=20 up to 200 F.  I was = close to a low=20 cloud layer at about 1800 AGL, so I throttle back some more and = dropped the=20 nose to level flight.  I = also=20 turned off the cooling fan to see what the temperature would do on = it=92s=20 own.  The temperature = steadily=20 dropped to about 180 degrees within just a few minutes, and then = stabilized=20 there. =20

 

I=20 cruised around for a little while, flew over my house and circled it = once, and=20 then headed back to the airport. =20 With the low cloud layer that had moved in, I really didn=92t = know if it=20 was going to clear out or get thicker, so I flew the 5 minutes back to = the=20 airport, and made a normal landing. =20 As I was ready to throttle back to descend about 800 feet to = pattern=20 altitude, and quick check of the coolant temperature showed about 160=20 degrees.  Not bad at = all, although=20 I was probably flying at about 60% power.  Still, it would have not = been nearly=20 that low before the new cooling = system.

 

Once I=20 landed and was clearing the runway, I checked the temperatures again, = and the=20 coolant was less then 140 degrees after the glide in to land.  Since I planned to wash the = plane, and=20 sometimes it starts hard after getting heat soaked sitting after a = run, I=20 turned on the cooling fan while a taxied over to the where the wash = area=20 is.  After washing the = plane, it=20 started up pretty easily, so I guess that worked out=20 also.

 

So far=20 so good.  I like what I = see so far=20 on the radiator, and the cooling fan definitely gives me a lot more=20 options.

 

Steve=20 Brooks

Cozy=20 N75CZ

13B=20 turbo to read the=20 = an

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