X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from wproxy.gmail.com ([64.233.184.192] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 918059 for flyrotary@lancaironline.net; Sun, 08 Jan 2006 21:08:05 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.233.184.192; envelope-from=russell.duffy@gmail.com Received: by wproxy.gmail.com with SMTP id 69so3082800wra for ; Sun, 08 Jan 2006 18:07:22 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:from:to:subject:date:message-id:mime-version:content-type:x-priority:x-msmail-priority:x-mailer:importance:in-reply-to:x-mimeole; b=jFE2RKmHyj6nZkrGaJjJk1KS4XVbSFkRl2UB7GafRbiRQqvnHdt0nSG7S7dyprILsYPmGTtiKyAY5PA2FvGomqHknIB4U4tjhj82InCmdlJSen07IEyjb6YPpJKzjIAUMlrx0V+vB8YNJYVTfhRsuFHIu0+XEOZO2dqfTB0jhew= Received: by 10.54.123.12 with SMTP id v12mr2572849wrc; Sun, 08 Jan 2006 18:07:21 -0800 (PST) Return-Path: Received: from rd ( [65.6.194.9]) by mx.gmail.com with ESMTP id d74sm20815879wra.2006.01.08.18.07.21; Sun, 08 Jan 2006 18:07:21 -0800 (PST) From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Auto Tune Instructions Not Needed Date: Sun, 8 Jan 2006 20:07:21 -0600 Message-ID: <000501c614c1$6da3e8e0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01C6148F.230978E0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C6148F.230978E0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable OK, I've been studying my manuals. The auto tune instructions are there = in the latest EM2 manual that I have. I upgraded the EC2, but I think that = was for the primer feature instead of auto tune. Thanks for the offer. Good to hear Bob. I played with autotune just a bit today, and didn't = have the greatest success. The default map is about right at lower rpm's on = the single rotor, but it's waaaaaaaay short on fuel at the mid point and up = as high as I've tried. =20 =20 Best I could tell in the time I played with it, autotune will work = better if you have every MAP location at least close enough to run near a mid = setting on the mixture. At the moment, that's not the case for me, but there = may be another cause for that. I did just realize that my prop pitch is way = over what it needs to be for the single rotor, on the order of double what it should be for this plane. The extra load might be what's causing my = need for more fuel at mod rpms. =20 =20 The really high pitch may also be causing some odd prop stalling issues = as well, and since this is a pusher, and the boom tube and fuselage cage = are close to the prop, I'm thinking the odd beat freq vibration is due to = the prop tip stalling and unstalling as it passes the fuselage parts. Need = to cut the pitch way back and try again. =20 =20 Cheers, Rusty (Gmailing as a test for the next couple weeks at least)=20 ------=_NextPart_000_0006_01C6148F.230978E0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

OK, I've been studying my manuals.  The auto tune = instructions are there in the latest EM2 manual that I have.  I = upgraded=20 the EC2, but I think that was for the primer feature instead of auto = tune. =20 Thanks for the offer.

Good to = hear Bob. =20 I played with autotune just a bit today, and didn't have the greatest=20 success.  The default map is about right at lower rpm's on the = single=20 rotor, but it's waaaaaaaay short on fuel at the mid point and up as high = as I've=20 tried. 
 
Best I = could tell in the=20 time I played with it, autotune will work better if you have every = MAP=20 location at least close enough to run near a mid setting on the = mixture. =20 At the moment, that's not the case for me, but there may be another = cause for=20 that.  I did just realize that my prop pitch is way over what = it needs=20 to be for the single rotor, on the order of double what it should be for = this=20 plane.  The extra load might be what's causing my need for more = fuel=20 at mod rpms.  
 
The = really high pitch=20 may also be causing some odd prop stalling issues as well, and = since this=20 is a pusher, and the boom tube and fuselage cage are close to = the=20 prop, I'm thinking the odd beat freq vibration is due to the prop = tip=20 stalling and unstalling as it passes the fuselage parts.  Need = to cut=20 the pitch way back and try again.  
 
Cheers,
Rusty = (Gmailing as a=20 test for the next couple weeks at least) 



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