X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost01.isp.att.net ([204.127.217.101] verified) by logan.com (CommuniGate Pro SMTP 5.3.0) with ESMTP id 4060906 for flyrotary@lancaironline.net; Sat, 02 Jan 2010 09:49:23 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.217.101; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-157-211-165.mco.bellsouth.net[70.157.211.165]) by isp.att.net (frfwmhc01) with SMTP id <20100102144845H01002q0ppe>; Sat, 2 Jan 2010 14:48:46 +0000 X-Originating-IP: [70.157.211.165] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: first flight of the new year Date: Sat, 2 Jan 2010 09:48:45 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0004_01CA8B90.C6F0C5E0" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcqLr+dT2vPjIEZoSFKcxH1V0fQrlAACjN4g X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0004_01CA8B90.C6F0C5E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Happy New Year everybody! Mike, How far from the exhaust ports is your O2 sensor located? Does anyone know what the minimum temp is for the O2 sensor? 800 degrees? Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson Sent: Saturday, January 02, 2010 8:31 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: first flight of the new year Happy New Year to you, Mike Wow. I'll bet you are glad to be in a different year and glad the old one gone. I noted your comment on the lean/rich possible O2 cause. Do you have a heated (3-4 wire) O2 sensor or an unheated one?? Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mike Wills Sent: Friday, January 01, 2010 9:43 PM To: Rotary motors in aircraft Subject: [FlyRotary] first flight of the new year Hope the holidays are treating you all well. Things are kind of slow on the list this week. So figured I'd get things going. I havent flown for almost 2 months. First my nephew's accident (he's recovering amazingly well). Then travel for work. Then had to do an annual on the airplane. Finally, had surgery to remove my appendix and gall bladder. Been a busy couple of months. But I'm feeling pretty good now, the airplane is ready for its first flight after the annual, and today was a spectacular day here with clear blue sky, unlimited visibility, light breeze, and temps in the mid 60s. I resolved a number of minor issues during the annual, including the gas smell that I've been living with for a while now. Found my left tank vent line was loose where it penetrates the bottom of the fuselage so was venting into the cockpit. The smell is now completely gone. Also found a solution to a problem I've been noticing since I've started flying further from the airport. I'd noted on previous flights when returning to the airport with a long low power descent that the engine runs quite lean as I enter the pattern requiring the mixture knob to be turned full rich. On a couple of occasions I've had some misfiring as I turn final - quite an attention getter! Today I realized the problem was a non-problem, in other words operator error. While descending (and for that matter, frequently at other times) I tweak the mixture based on the mixture monitor reading. Today I ignored the monitor and just left the mixture alone which worked just fine. I think during prolonged low power descents the O2 sensor cools off and provides an inaccurate reading. The occasional misfire was the result of running too rich (the mixture monitor indicated mid range readings). So todays flight was trouble free and gets me an hour closer to the end of phase 1. 18 hours down, 22 to go. Mike Wills RV-4 N144MW __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ------=_NextPart_000_0004_01CA8B90.C6F0C5E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Happy New Year everybody!

 

Mike,

How far from the exhaust ports is your O2 sensor located?  = Does anyone know what the minimum temp is for the O2 sensor?  800 = degrees?

 

Bill B 

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Saturday, January = 02, 2010 8:31 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = first flight of the new year

Happy New Year to you, = Mike

 

Wow.  I’ll bet you are = glad to be in a different year and glad the old one = gone.

 

I noted your comment on the = lean/rich possible O2 cause.  Do you have a heated (3-4 wire) O2 sensor or an unheated one??

 

Ed

 

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mike Wills
Sent: Friday, January 01, = 2010 9:43 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] = first flight of the new year

 

Hope the holidays are treating you all well. Things = are kind of slow on the list this week. So figured I'd get things = going.

 

I havent flown for almost 2 months. First my = nephew's accident (he's recovering amazingly well). Then travel for work. Then = had to do an annual on the airplane. Finally, had surgery to remove my appendix = and gall bladder. Been a busy couple of months.

 

But I'm feeling pretty good now, the airplane is = ready for its first flight after the annual, and today was a spectacular day here = with clear blue sky, unlimited visibility, light breeze, and temps in the mid = 60s. I resolved a number of minor issues during the annual, including the gas = smell that I've been living with for a while now. Found my left tank vent = line was loose where it penetrates the bottom of the fuselage so was venting = into the cockpit. The smell is now completely = gone.

 

Also found a solution to a problem I've been = noticing since I've started flying further from the airport. I'd noted on = previous flights when returning to the airport with a long low power descent that = the engine runs quite lean as I enter the pattern requiring the mixture knob = to be turned full rich. On a couple of occasions I've had some misfiring as I = turn final - quite an attention getter! Today I realized the problem was a non-problem, in other words operator error. While descending (and for = that matter, frequently at other times) I tweak the mixture based on the = mixture monitor reading. Today I ignored the monitor and just left the mixture = alone which worked just fine. I think during prolonged low power descents the O2 sensor cools off and provides an inaccurate reading. The = occasional misfire was the result of running too rich (the mixture monitor = indicated mid range readings).

 

So todays flight was trouble free and gets me an = hour closer to the end of phase 1. 18 hours down, 22 to = go.

 

Mike Wills

RV-4 = N144MW  



__________ Information from ESET NOD32 Antivirus, version of virus = signature database 3267 (20080714) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

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