X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-vw0-f52.google.com ([209.85.212.52] verified) by logan.com (CommuniGate Pro SMTP 5.3.5) with ESMTP id 4233237 for flyrotary@lancaironline.net; Sat, 24 Apr 2010 23:17:40 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.52; envelope-from=rwstracy@gmail.com Received: by vws20 with SMTP id 20so715639vws.25 for ; Sat, 24 Apr 2010 20:17:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=1bD8Ds3rzE2fTMiJSSD+NKrheE7LO7pBDzCpsI0ZL6Y=; b=NU5i3VahWj3fgpSzRnVBNR0JB4faPg/E49YE//5voGzLPwC9IAVL8/Wg5DvqSEn1e3 XkMGlS544McfZmlWR1js0/QDqzG+Fq5FJPl2ZFWfQYJ7bwNfllIrFzJYPI6YVRvGYhdP Tq4Lc57qMaw0/fYl++Rr69oWxIpB6LX5Vy21Y= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=uDjKZtTMjsx2oahpiuXWNioPfz3tW2fTLH9xlzXPIpvkf1eyXF2HL5ZVHLrQxGOKsB bEsJ51zDiXYRwfIfEG9uyCpQt6VW8j9Vrlvii6jAyO4bM0t50pmlcPOJBQwb8MY/HRCh ZSTF7Mr66y6su7ctzKd4P0CilxGsqZT2x1idc= MIME-Version: 1.0 Received: by 10.220.127.22 with SMTP id e22mr1411792vcs.102.1272165424282; Sat, 24 Apr 2010 20:17:04 -0700 (PDT) Sender: rwstracy@gmail.com Received: by 10.220.116.3 with HTTP; Sat, 24 Apr 2010 20:17:04 -0700 (PDT) In-Reply-To: References: Date: Sat, 24 Apr 2010 23:17:04 -0400 X-Google-Sender-Auth: 25e2b0db36222918 Message-ID: Subject: Re: [FlyRotary] getting lost in the tuning process From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=005045016b5935bcf804850718e3 --005045016b5935bcf804850718e3 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable *"Next is Secondary Injector Differential adjustment, Mode 6. First I cleared the large secondary mode. Then I tried to get the mixture mid rang= e at <14=94.* *Then I tried to get the mixture mid range at <14=94. This req= uired a lot of leaning on the mixture knob. Same for above 16=94. So I turned t= he program knob to the right and hit store several times. *" I think you need to get a better understanding of how the various modes wor= k and what the direction of change will be. If you need the mixture to be Leaner, why would you turn the Program knob RIGHT? (Right =3D RICH, Left = =3D LEAN) Also note that Mode 6 will have NO effect on the mixture if you are below the staging point (which you no doubt were at a MP of 14") It only affects the mixture above the staging point, ie, when the SECONDARIES are on. Next, hitting the Store button multiple times will have no effect in Mode 6 unless you CHANGE the position of the program knob before you hit Store. Tracy On Sat, Apr 24, 2010 at 10:57 PM, Bill Bradburry wrote: > I was working on tuning today and I seem to be getting lost. > > I have the Renesis and I recently changed my injectors out from the > Red/Blue to all 4 yellow. These are larger than the Red primary, but > smaller than the blue secondary. The total flow is close to the same for > both. > > First thing I did was check fuel injector flow rate, Mode 3. Between 22 > and 26=94 of manifold pressure that they maintained good mixture with the > mixture knob in the center. So far, so good. > > Next is Secondary Injector Differential adjustment, Mode 6. First I > cleared the large secondary mode. Then I tried to get the mixture mid ra= nge > at <14=94. This required a lot of leaning on the mixture knob. Same for > above 16=94. So I turned the program knob to the right and hit store sev= eral > times. Soon I could move the manifold pressure back and forth over the > staging point and the engine ran smoothly. > > > > But then I found that I could only run the engine at high power with the > mixture knob all the way lean!??? Did I do something wrong? How did thi= s > happen? > > > > I think I am lost. I don=92t really understand what I am trying to > accomplish with the mode 6, and when I ever get to mode 2, I am going to > really be up the understanding creek. > > > > Anyone who would like to enlighten me would be appreciated. > > > > My current plan is to clear it out and start over from the beginning agai= n > tomorrow. > > > > Tracy=92s instructions kind of make me think that he is expecting the > mixture to go rich. My problem is that it is rich to begin with and does= n=92t > seem to really change that much. > > > > Thanks for the assistance! > > > > Bill B > --005045016b5935bcf804850718e3 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable "Next is Secondary Injector= =20 Differential adjustment, Mode 6.=A0 First I cleared the large secondary mode.=A0 Then I tried to get the mixture mid range at <14=94. Then I tried to get the mixture mid range at <14=94.=A0 This required a lot of leaning on the mixture knob.=A0 Same for above 16=94.=A0 So I turned the program knob to the right and hit store several times. "
I think you need to get a better understanding of how the various modes w= ork and what the direction of change will be.=A0 If you need the mixture to= be Leaner, why would you turn the Program knob RIGHT?=A0=A0 (Right =3D RIC= H, Left =3D LEAN)

Also note that Mode 6 will have NO effect on the mixture if you are bel= ow the staging point (which you no doubt were at a MP of 14")=A0 It on= ly affects the mixture above the staging point, ie, when the SECONDARIES ar= e on.

Next, hitting the Store button multiple times will have no effect in Mo= de 6 unless you CHANGE the position of the program knob before you hit Stor= e.

Tracy






On Sat, Apr 24, 2010 at 10:57 PM, Bill Bradburry <bbradburry@bellso= uth.net> wrote:

I was working = on tuning today and I seem to be getting lost.=A0

I have the Ren= esis and I recently changed my injectors out from the Red/Blue to all 4 yellow.=A0 These are larger tha= n the Red primary, but smaller than the blue secondary.=A0 The total flow is close to the same for both.

First thing I = did was check fuel injector flow rate, Mode 3.=A0 Between 22 and 26=94 of manifold pressure that they maintained good mixture with the mixture knob in the center.=A0 So far= , so good.

Next is Second= ary Injector Differential adjustment, Mode 6.=A0 First I cleared the large secondary mode.=A0 Then I tried to get the mixture mid range at <14=94.=A0 This required a lot of leaning on the mixture knob.=A0 Same for above 16=94.=A0 So I turned the program knob to the right and hit store several times.=A0 Soon I could move the manifold pressure back and forth over the staging point and the en= gine ran smoothly.

=A0

But then I fou= nd that I could only run the engine at high power with the mixture knob all the way lean!???=A0 Did I do something wrong?=A0 How did this happen?

=A0

I think I am l= ost.=A0 I don=92t really understand what I am trying to accomplish with the mode 6, and when I ever = get to mode 2, I am going to really be up the understanding creek.

=A0

Anyone who wou= ld like to enlighten me would be appreciated.

=A0

My current pla= n is to clear it out and start over from the beginning again tomorrow.

=A0

Tracy=92s instructions kind of make m= e think that he is expecting the mixture to go rich.=A0 My problem is that it is rich to begin with and = doesn=92t seem to really change that much.

=A0

Thanks for the= assistance!

=A0

Bill B<= /font>


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