X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao103.cox.net ([68.230.241.43] verified) by logan.com (CommuniGate Pro SMTP 5.3.0) with ESMTP id 4061026 for flyrotary@lancaironline.net; Sat, 02 Jan 2010 12:16:29 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.43; envelope-from=rv-4mike@cox.net Received: from fed1rmimpo01.cox.net ([70.169.32.71]) by fed1rmmtao103.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100102171554.SXJO26337.fed1rmmtao103.cox.net@fed1rmimpo01.cox.net> for ; Sat, 2 Jan 2010 12:15:54 -0500 Received: from willsPC ([68.105.91.47]) by fed1rmimpo01.cox.net with bizsmtp id QhFt1d00911JKxw03hFu5s; Sat, 02 Jan 2010 12:15:54 -0500 X-VR-Score: -80.00 X-Authority-Analysis: v=1.1 cv=4cmh2gL1a6RJOvq2diO5/mV5P7W7DelkioqUudxRLMU= c=1 sm=1 a=Fd91bCVGJ9sA:10 a=0/axarwMsD7CBOw3dIi+FQ==:17 a=Ia-xEzejAAAA:8 a=ayC55rCoAAAA:8 a=arxwEM4EAAAA:8 a=QdXCYpuVAAAA:8 a=7g1VtSJxAAAA:8 a=ekHE3smAAAAA:20 a=UretUmmEAAAA:8 a=nUuTZ29dAAAA:8 a=DbIAowJnx3A8v2qkWrcA:9 a=zc5Z7L68J7mtsDNwQVkA:7 a=vCT_qJAKW_sVzzMuROq0qRXAv0sA:4 a=1vhyWl4Y8LcA:10 a=EzXvWhQp4_cA:10 a=fzh9n0uvw1wd7MW1:21 a=b2M9oEVibUhdVCDJ:21 a=pedpZTtsAAAA:8 a=oIOzZYAc7LhVzbklhzAA:9 a=fWp2FeVA6vQgvmufetMA:7 a=mWs-hA5ZvZXRlyxqoyvzw55INu0A:4 a=eJojReuL3h0A:10 a=oieI7MEiWlbYLEsU:21 a=GzaiQz0xDt3v_uZD:21 a=0/axarwMsD7CBOw3dIi+FQ==:117 X-CM-Score: 0.00 Message-ID: <88A9E5DD49C047938F247B2A91EBBCAF@willsPC> From: "Mike Wills" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: first flight of the new year Date: Sat, 2 Jan 2010 09:15:54 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002E_01CA8B8C.2FC2AC50" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8089.726 This is a multi-part message in MIME format. ------=_NextPart_000_002E_01CA8B8C.2FC2AC50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable My exhaust header is an equal length type with 28" inch primaries into a = 2 -> 1 merge collector. The O2 sensor is threaded into the collector so = I estimate it is about 36" from the exhaust port. It usually takes about = a minute for the readings to settle down after a cold start, but I've = always assumed that they were accurate - even at idle. Maybe that is an = incorrect assumption. Mike =20 From: Bill Bradburry=20 Sent: Saturday, January 02, 2010 6:48 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: first flight of the new year Happy New Year everybody! =20 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? =20 Bill B=20 =20 -------------------------------------------------------------------------= ------- 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 =20 Wow. I'll bet you are glad to be in a different year and glad the old = one gone. =20 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?? =20 Ed =20 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 =20 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. =20 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. =20 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. =20 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). =20 So todays flight was trouble free and gets me an hour closer to the end = of phase 1. 18 hours down, 22 to go. =20 Mike Wills RV-4 N144MW =20 __________ 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_002E_01CA8B8C.2FC2AC50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
My exhaust header is an equal length type with = 28" inch=20 primaries into a 2 -> 1 merge collector. The O2 sensor is threaded = into the=20 collector so I estimate it is about 36" from the exhaust port. It = usually takes=20 about a minute for the readings to settle down after a cold start, but = I've=20 always assumed that they were accurate - even at idle. Maybe that is an=20 incorrect assumption.
 
Mike

 
From: Bill Bradburry
Sent: Saturday, January 02, 2010 6:48 AM
Subject: [FlyRotary] Re: first flight of the new=20 year

Happy New Year = everybody!

 

Mike,

How far from the exhaust ports is your O2 = sensor=20 located?  Does anyone know what the minimum temp is for the O2=20 sensor?  800 degrees?

 

Bill = B 

 

From:=20 Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On=20 Behalf Of Ed Anderson
Sent: Saturday, January 02, 2010 = 8:31=20 AM
To: = Rotary motors in aircraft
Subject: [FlyRotary] Re: first = flight of=20 the new year

Happy New = Year to you,=20 Mike

 

Wow.  = I=92ll bet you=20 are glad to be in a different year and glad the old one=20 gone.

 

I noted your = comment on=20 the lean/rich possible O2 cause.  Do you have a heated (3-4 wire) = O2 sensor=20 or an unheated one??

 

Ed

 

Ed=20 Anderson

Rv-6A N494BW=20 Rotary Powered

Matthews,=20 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.r= otaryaviation.com/Rotorhead%20Truth.htm

From:=20 Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On=20 Behalf Of Mike Wills
Sent: Friday, January 01, 2010 = 9:43=20 PM
To: = Rotary motors in aircraft
Subject: [FlyRotary] first flight = of the=20 new year

 

Hope the holidays are = treating you=20 all well. Things are kind of slow on the list this week. So figured I'd = get=20 things going.

 

I havent flown for = almost 2=20 months. First my nephew's accident (he's recovering amazingly well). = Then travel=20 for work. Then had to do an annual on the airplane. Finally, had surgery = to=20 remove my appendix and gall bladder. Been a busy couple of=20 months.

 

But I'm feeling pretty = good now,=20 the airplane is ready for its first flight after the annual, and today = was a=20 spectacular day here with clear blue sky, unlimited visibility, light = breeze,=20 and temps in the mid 60s. I resolved a number of minor issues during the = annual,=20 including the gas smell that I've been living with for a while now. = Found=20 my left tank vent line was loose where it penetrates the bottom of the = fuselage=20 so was venting into the cockpit. The smell is now completely=20 gone.

 

Also found a solution to = a problem=20 I've been noticing since I've started flying further from the airport. = I'd noted=20 on previous flights when returning to the airport with a long low power = descent=20 that the engine runs quite lean as I enter the pattern requiring the = mixture=20 knob to be turned full rich. On a couple of occasions I've had some = misfiring as=20 I turn final - quite an attention getter! Today I realized the problem = was a=20 non-problem, in other words operator error. While descending (and for = that=20 matter, frequently at other times) I tweak the mixture based on the = mixture=20 monitor reading. Today I ignored the monitor and just left the mixture = alone=20 which worked just fine. I think during prolonged low power descents = the O2 sensor cools off and provides an inaccurate reading. The = occasional=20 misfire was the result of running too rich (the mixture monitor = indicated mid=20 range readings).

 

So todays flight was = trouble free=20 and gets me an hour closer to the end of phase 1. 18 hours down, 22 to=20 go.

 

Mike=20 Wills

RV-4=20 N144MW  



__________ Information from ESET NOD32 = Antivirus, version of virus signature database 3267 (20080714)=20 __________

The message was checked by ESET NOD32 = Antivirus.

http://www.eset.com

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