X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from rv-out-0506.google.com ([209.85.198.229] verified) by logan.com (CommuniGate Pro SMTP 5.2.11) with ESMTP id 3409957 for flyrotary@lancaironline.net; Sun, 04 Jan 2009 06:40:20 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.198.229; envelope-from=msteitle@gmail.com Received: by rv-out-0506.google.com with SMTP id f6so8640714rvb.7 for ; Sun, 04 Jan 2009 03:39:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:in-reply-to:mime-version:content-type:references; bh=uuN2gbqCRWsS3pTKI2jshVBhdSieUtuldSl8k+BPBEo=; b=m+9zALyQs9AeusiFA3+NjK0NKcbuJZam8pdZB3LZuk1qcIwwZEJfcjsavo3ITVxX1t h6lwZyWWX1/9zDAxrUD7eSP+5kcPLGVPdhOssYT3Pkqsta77O12SdkDlnEdNyUk7pGwM AI8o9Prg9f5xoveo+p/DxCmUtTuKnAWXVHXaY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version :content-type:references; b=ZJMV3FOvqaFytFvfYBAguUs5dNcLm13XvF5TZgSSpHKfFVtCG5HjAp9HRgUF8cMeWg kKRbhqxXOE5Mt4ODozeqte6b2mITdljzhEX+t8dMymVWkzGnI2e/CvhsOnrjW/pmGFih PTRlXPDfAx3wCuYdP85akWYzUkKmDg6x7MOlM= Received: by 10.141.28.2 with SMTP id f2mr9805942rvj.217.1231069185251; Sun, 04 Jan 2009 03:39:45 -0800 (PST) Received: by 10.140.166.4 with HTTP; Sun, 4 Jan 2009 03:39:45 -0800 (PST) Message-ID: <5cf132c0901040339m2f984e53ua8fe22192c3087bd@mail.gmail.com> Date: Sun, 4 Jan 2009 05:39:45 -0600 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: 20B install issues overcome In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_92885_19270417.1231069185245" References: ------=_Part_92885_19270417.1231069185245 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Agree. Unfortunately, that's not a comment I hear. On the contrary, they usually tell me that they can hear me before they can see me. ;-( Mark S. ANR headsets mandatory On Sun, Jan 4, 2009 at 12:22 AM, Al Gietzen wrote: > I'm presently gathering materials to fabricate a tangential muffler made > from inconel, similar to your design. I take it from your report that yo= ur > muffler is holding up well? > > Mark S. > > > > So far it is doing fine. And the inconel tangential and the 321SS > secondary muffler (my own design) quiet it down nicely. A few days ago I > picked up my brother to go for a ride, while my sister-in-law waited and > watched other planes come and go. When we got back her remark was that m= y > plane was quieter than all the rest. I consider that to be 'expert > testimony'J. > > Al G > > On Sat, Jan 3, 2009 at 5:47 PM, Al Gietzen wrote: > > Al, > > That's a great shot. Have you had any "significant issues" with your > install? If so, how did you overcome them? > Mark S. > > I had 2 issues that required some time and determination. The first was t= he > RWS EC2. I had an early version for the 3-rotor, and perhaps the first > installed in a composite airplane. I had some kind of electrical noise > related corruption of settings which persisted through a lot of effort fo= r > over a years time. It has been resolved, and the engine running fine. Th= at > has been discussed here more than once in the past. > > The other was less-than-expected performance of an oil cooler built into > the wing root, without much of a scoop for the inlet below the wing. The > theory was that the differential pressure below/above the wing would help > provide the necessary air flow. Not the case here as the location is too > far back on the wing; and behind the strake (the inboard section on the > canard airplane). The pressure differential turned out to be only about = 1" > H20 =96 very little help. I added a ram scoop, and installed a small > oil/water heat exchanger in the cowl. Currently oil temps are fine, and = the > coolant temp is running a bit lower than I like at cruise. I may eventua= lly > install some sort of air flow adjustment, or even consider installing a > thermostat in the engine. You may recall discussion of these changes her= e > in the past as well. > > I'm just past 140 hours flying time, and feel quite fortunate with how we= ll > things have worked out. Performance and economy are great. > > Al G http://members.cox.net/alg3/airplane.htm > > > > > > > ------=_Part_92885_19270417.1231069185245 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Agree.  Unfortunately, that's not a comment I hear.  On the c= ontrary, they usually tell me that they can hear me before they can see me.=   ;-( 

Mark S.
ANR headsets mandatory

On Sun, Jan 4, 2009 at 12:22 AM, Al Gietzen <ALVentures@cox.net> wrote:

I&= #39;m presently gathering materials to fabricate a tangential muffler made from inconel, similar to your design.  I take it from your report that your muffler is holding up well?        

Mark S.

 

So far it is doing fine.  And the inconel tangential and the 321SS secondary muffler (my own design) quiet it down nicely.  A few days ago I picked= up my brother to go for a ride, while my sister-in-law waited and watched othe= r planes come and go.  When we got back her remark was that my plane was quieter than all the rest.  I consider that to be 'expert testimony'J<= font color=3D"blue" face=3D"Verdana" size=3D"2">.

Al G

= On Sat, Jan 3, 2009 at 5:47 = PM, Al Gietzen <= ALVentures@cox.net> wrote:

Al, =

That's a great shot.  Have you had any "significant issues&qu= ot; with your install?  If so, how did you overcome them?
Mark S. 

I had 2 issues that required some t= ime and determination. The first was the RWS EC2.  I had an early version for the 3-rotor, and perhaps = the first installed in a composite airplane.  I had some kind of electrica= l noise related corruption of settings which persisted through a lot of effor= t for over a years time. It has been resolved, and the engine running fine.&n= bsp; That has been discussed here more than once in the past.

The other was less-than-expected pe= rformance of an oil cooler built into the wing root, without much of a scoop for the inlet below the wing.  The theory was that the differential pressure below/above the wing wo= uld help provide the necessary air flow.  Not the case here as the locatio= n is too far back on the wing; and behind the strake (the inboard section on the canard airplane).  The pressure differential turned out to be only abo= ut 1" H20 =96 very little help.  I added a ram scoop, and installed a small oil/water heat exchanger in the cowl.  Currently oil temps are= fine, and the coolant temp is running a bit lower than I like at cruise.  I = may eventually install some sort of air flow adjustment, or even consider installing a thermostat in the engine.  You may recall discussion of t= hese changes here in the past as well.

I'm just past 140 hours flying = time, and feel quite fortunate with how well things have worked out.  Performance and economy are great.

Al G   http://members.cox.net= /alg3/airplane.htm

 

 

=  


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