X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao101.cox.net ([68.230.241.45] verified) by logan.com (CommuniGate Pro SMTP 5.3.0) with ESMTP id 4067669 for flyrotary@lancaironline.net; Wed, 06 Jan 2010 22:11:49 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.45; envelope-from=rv-4mike@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao101.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100107031114.TIFI4995.fed1rmmtao101.cox.net@fed1rmimpo03.cox.net> for ; Wed, 6 Jan 2010 22:11:14 -0500 Received: from willsPC ([68.105.91.112]) by fed1rmimpo03.cox.net with bizsmtp id STBD1d00r2RT1vG04TBER2; Wed, 06 Jan 2010 22:11:14 -0500 X-VR-Score: -100.00 X-Authority-Analysis: v=1.1 cv=tFsbg6ins7CCNpnljIJNduQMDmn6okYQ4EWCOqLKcEg= c=1 sm=1 a=Fd91bCVGJ9sA:10 a=lTdc4wscJffengO6xjBlCw==:17 a=N8B9JuSIAAAA:8 a=kviXuzpPAAAA:8 a=aon4ybhti3STmpJtZqEA:9 a=72FVjk--rihOXAM35gao2f7KQ1gA:4 a=4vB-4DCPJfMA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=DlxOiw2lQlQ1fnBKHsEA:9 a=1dKpwKomhQ8eM6W7hYYA:7 a=I1uOetIwxc-DWk6i0ilFOUoX4BcA:4 a=MSl-tDqOz04A:10 a=EzXvWhQp4_cA:10 a=lTdc4wscJffengO6xjBlCw==:117 X-CM-Score: 0.00 Message-ID: From: "Mike Wills" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: first flight of the new year Date: Wed, 6 Jan 2010 19:11:14 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00CB_01CA8F04.04319580" 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_00CB_01CA8F04.04319580 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable My start procedure is about the same. I set it at 12:00 for takeoff = also. I havent figured out why, but during climbout to 8,000 I found = that I need to tweak it a little richer a couple of times on the way up. = I would think the MAP sensor is altitude compensating but at least for = my installation it doesn=92t seem to be. For cruise do you lean enough that you notice any reduction in engine = RPM? What sort of fuel flows, manifold pressure, and cruise speeds are = you getting and at what altitude? I cant fly up to Cable - need to knock out another 20 hours before I can = leave the test area. If I can talk one of my buddies into going up I'll = see you there. Mike From: David Leonard=20 Sent: Tuesday, January 05, 2010 11:29 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: first flight of the new year My experience is the same as Al's. I put it at 3:00 for starting then = 12:00 after that for slightly rich of peak (which is at 10:30 or = 11:00). I could leave it at 12:00 the whole flight if I wanted but In = cruise I lean it to keep EGT less than 900C. That is usually somewhere = around 8-9:00 on the dial and does require slight tweaking based on = power setting and altitude/RPM. BTW Mike. I am flying formation at the Cable Air Fare this weekend and = Al is coming along on Saturday. You should try to find a way to come = out too. --=20 David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net On Tue, Jan 5, 2010 at 10:16 PM, Al Gietzen wrote: Given that most of us are used to adjusting mixture by cranking = repeatedly on the big red knob, it does take a little mental adjustment = to get used to the small adjustments needed with the EC-2. But I'm = pretty well dialed into it now.=20 Mike Mike; One of the nice things about the rotary with the EC-2 is; once well = tuned; you don=92t have to make any adjustments. My lean cruise = position is at 10:30 =96 11:00; max power 2:30 =96 3:00; but I can taxi = away from the hangar with it at 2:00 position; do a flight to 10,000 ft = and return to the hangar without ever touching the knob and it never = missing a beat. Not optimum, and EGTs higher than desired; but the point = is =96 needs minimal pilot attention. Al ------=_NextPart_000_00CB_01CA8F04.04319580 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
My start procedure is about the same. I set it = at 12:00=20 for takeoff also. I havent figured out why, but during climbout to 8,000 = I found=20 that I need to tweak it a little richer a couple of times on the way up. = I would=20 think the MAP sensor is altitude compensating but at least for my = installation=20 it doesn=92t seem to be.
 
For cruise do you lean enough that you notice = any=20 reduction in engine RPM? What sort of fuel flows, manifold pressure, and = cruise=20 speeds are you getting and at what altitude?
 
I cant fly up to Cable - need to knock out = another 20=20 hours before I can leave the test area. If I can talk one of my buddies = into=20 going up I'll see you there.
 
Mike

Sent: Tuesday, January 05, 2010 11:29 PM
Subject: [FlyRotary] Re: first flight of the new=20 year

My experience is the same as Al's.  I put it at 3:00 = for=20 starting then 12:00 after that for slightly rich of peak  (which is = at=20 10:30 or 11:00).  I could leave it at 12:00 the whole flight if I = wanted=20 but In cruise I lean it to keep EGT less than 900C.  That is = usually=20 somewhere around 8-9:00 on the dial and does require slight tweaking = based on=20 power setting and altitude/RPM.

BTW Mike.  I am flying = formation at=20 the Cable Air Fare this weekend and Al is coming along on = Saturday.  You=20 should try to find a way to come out too.

--
David=20 Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.nethttp://RotaryRoster.net


On Tue, Jan 5, 2010 at 10:16 PM, Al Gietzen = <ALVentures@cox.net> = wrote:

Given that most of us = are used=20 to adjusting mixture by cranking repeatedly on the big red knob, it = does take=20 a little mental adjustment to get used to the small adjustments needed = with=20 the EC-2. But I'm pretty well dialed into it=20 now. 

Mike

Mike;

 

One of = the nice=20 things about the rotary with the EC-2 is; once well tuned; you don=92t = have=20 to make any adjustments.  My lean cruise position is at 10:30 = =96=20 11:00; max power 2:30 =96 3:00; but I can taxi away from the hangar = with it at=20 2:00 position; do a flight to 10,000 ft and return to the hangar = without ever=20 touching the knob and it never missing a beat. Not optimum, and EGTs = higher=20 than desired; but the point is =96 needs minimal pilot=20 attention.

 

Al


------=_NextPart_000_00CB_01CA8F04.04319580--