X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from ironmaiden.mail.utexas.edu ([128.83.32.53] verified) by logan.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1663330 for flyrotary@lancaironline.net; Mon, 11 Dec 2006 09:49:57 -0500 Received-SPF: none receiver=logan.com; client-ip=128.83.32.53; envelope-from=mark.steitle@austin.utexas.edu DomainKey-Signature: s=main; d=austin.utexas.edu; c=nofws; q=dns; b=IrA4eaQEnqWSReM9Pqjn51kz0pX1JAn8l5BWkzaGHUVksR9j++lA64jOsj2G5V7LehyyNfRmafvBN0bXg6RiI0S5u4y0os/5TCnjre6H95X5TrtVg6TYlpjDpUPmYjm0DJBlUV3IUzLiONIaDr4B16ooKStahmcpIpScA9tq/aw=; Received: from exb02.austin.utexas.edu (HELO MAIL01.austin.utexas.edu) ([129.116.87.143]) by ironmaiden.mail.utexas.edu with ESMTP; 11 Dec 2006 08:49:10 -0600 Received: from MAIL02.austin.utexas.edu ([129.116.87.144]) by MAIL01.austin.utexas.edu with Microsoft SMTPSVC(6.0.3790.1830); Mon, 11 Dec 2006 08:49:09 -0600 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C71D33.8402C940" Subject: RE: [FlyRotary] Great Flight Date: Mon, 11 Dec 2006 08:49:09 -0600 Message-ID: <5B59870CA143DD408BD6279374B74C8B02F4DA9E@MAIL02.austin.utexas.edu> In-Reply-To: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Great Flight Thread-Index: AccdMB8gAm1fT1EITKiMJyesfyL/uQAAzFHQ From: "Steitle, Mark R" To: "Rotary motors in aircraft" Return-Path: mark.steitle@austin.utexas.edu X-OriginalArrivalTime: 11 Dec 2006 14:49:09.0964 (UTC) FILETIME=[8411B8C0:01C71D33] This is a multi-part message in MIME format. ------_=_NextPart_001_01C71D33.8402C940 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Steve,=20 Great report. Its always good to hear about rotary flights. =20 Thanks, Mark S. =20 =20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steve Brooks Sent: Monday, December 11, 2006 8:25 AM To: Rotary motors in aircraft Subject: [FlyRotary] Great Flight =20 Yesterday, the weather was outstanding. A little cool at 56 degrees, but sunny and no wind. It was very nice to drive only 15 minutes to the airport, to take the plane up for a flight around the area. =20 On the flight bringing it up to NC 2 weeks ago, I thought that the engine was running a little rich, and after trying option 9 to lean it up, it really didn't change too much. Then, in a moment of sheer brilliance, I decided to lean it a little more using mode 3. Still didn't change the mixture much, but I was happy with it, so I left it alone. When I throttled back upon arrival, the mixture bottomed out, and the engine stumbled pretty bad. After a quick rotation of the mixture control, and a couple clicks on option 9, it was running good again, until I throttled back a little more, and started the cycle all over again. =20 A couple of days later, I went to the airport and decided at this point, my best option was to return to factory default, and start over, which I did. After tuning it for 10 minutes or so, I figured it was good enough for a flight. =20 After preflight and taxi, my oil temperature was at 140 degrees, but my coolant was still laying on the 100 degree peg. That is quite different than normal. I waited for a few minutes until it started to move, just to make sure that it was working. When I took off, I pushed the throttle forward, and the engine roared to life. It really roared to life, because it was running at about 8 lbs of boost. I backed it down a little to 5 lbs, and it backfired once, but then ran smoothly. After climb out to about 2000 feet, the water and oil were only at 160 degrees, which was really a surprise. It was a little cooler than normal, but the temperatures were running about 20 degrees cooler. =20 I flew for about 20 minutes, surveying my new flying area, and just enjoying the view. I then decided to check out the tuning and started lowering the power. I found several points where the mixture was really lean, and I made adjustments (option 9 only) to get it where it needed to be. I think that it probably tuned better now, than it ever has been, so I'm not going to mess with it anymore. =20 Temperatures never did get above 160 degrees, which makes me wonder if I had an air bubble in the cooling system that worked out during, or after the long flight 2 weeks ago. Whatever it is, I like it. I slowed up to 100 kits approaching the downwind, and made a perfect approach and landing. After the decent and landing, temperatures were at about 140 degrees, and the engine was running very good. =20 It's very nice to can add fuel and fly, but I think that before my next flight, I'll pull the top cowling, and just give everything a once over, to make sure that everything is still good. I'll also re-torque the prop. =20 =20 Steve Brooks Cozy MKIV N75CZ Turbo Rotary - 48 hours and counting.=20 ------_=_NextPart_001_01C71D33.8402C940 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Steve, =

Great report.  Its always good = to hear about rotary flights.

 

Thanks,

=

Mark = S.

 

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Steve Brooks
Sent: Monday, December = 11, 2006 8:25 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] = Great Flight

 

Yesterday, the weather was outstanding.  A little cool at 56 degrees, but sunny and no = wind.  It was very nice to drive only 15 minutes to the airport, to take the plane up for a = flight around the area.

 

On the flight bringing it = up to NC 2 weeks ago, I thought that the engine was running a little rich, and = after trying option 9 to lean it up, it really didn’t change too = much.  Then, in a moment of sheer brilliance, I decided to lean it a little more = using mode 3.  Still didn’t change the mixture much, but I was happy = with it, so I left it alone.  When I throttled back upon arrival, the mixture = bottomed out, and the engine stumbled pretty bad.  After a quick rotation of the = mixture control, and a couple clicks on option 9, it was running good again, = until I throttled back a little more, and started the cycle all over = again.

 

A couple of days later, I = went to the airport and decided at this point, my best option was to return to = factory default, and start over, which I did.  After tuning it for 10 = minutes or so, I figured it was good enough for a = flight.

 

After preflight and taxi, = my oil temperature was at 140 degrees, but my coolant was still laying on the = 100 degree peg.  That is quite different than normal.  I waited = for a few minutes until it started to move, just to make sure that it was working.  = When I took off, I pushed the throttle forward, and the engine roared to life.  = It really roared to life, because it was running at about 8 lbs of boost.  I = backed it down a little to 5 lbs, and it backfired once, but then ran = smoothly.   After climb out to about 2000 feet, the water and oil were only at 160 = degrees, which was really a surprise.  It was a little cooler than normal, but the temperatures were running about 20 degrees = cooler.

 

I flew for about 20 = minutes, surveying my new flying area, and just enjoying the view.  I then = decided to check out the tuning and started lowering the power.  I found = several points where the mixture was really lean, and I made adjustments (option 9 = only) to get it where it needed to be.  I think that it probably tuned = better now, than it ever has been, so I’m not going to mess with it = anymore.

 

Temperatures never did get = above 160 degrees, which makes me wonder if I had an air bubble in the cooling = system that worked out during, or after the long flight 2 weeks ago.  = Whatever it is, I like it.  I slowed up to 100 kits approaching the downwind, and = made a perfect approach and landing.  After the decent and landing, = temperatures were at about 140 degrees, and the engine was running very = good.

 

It’s very nice to = can add fuel and fly, but I think that before my next flight, I’ll pull the top cowling, and just give everything a once over, to make sure that = everything is still good.  I’ll also re-torque the prop.  =

 

Steve = Brooks

Cozy MKIV = N75CZ

Turbo Rotary – 48 = hours and counting.

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