X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ey-out-2122.google.com ([74.125.78.27] verified) by logan.com (CommuniGate Pro SMTP 5.2.7) with ESMTP id 3121595 for flyrotary@lancaironline.net; Tue, 09 Sep 2008 15:24:59 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.78.27; envelope-from=msteitle@gmail.com Received: by ey-out-2122.google.com with SMTP id 25so988200eya.25 for ; Tue, 09 Sep 2008 12:24:22 -0700 (PDT) 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=jSpEdekttyRVSsUkCx6bJnmefOGZcWqGQMEmEGKG2RA=; b=c24VYOlb28WCv5fp9P+CWXxiiMDyjMQEThbRV3fNUWZstWNKsuci5a+nklBeOGvoIQ J0OL5AGc+KtqR+2qOMO54nqHeNQ1A98rpQeZQK4IX+pjE4MooMTWc//E2RG1RqdAz8dJ hWFQshknT1/lXDMp1axYsm8qvI7J++bPIGb5s= 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=WszZkGkVe0jWJemRmRl82eqwafx3rjg/QcExkEm40R02u+kP+HTAyy70+mN+rSj1j1 AHIo5+5irH+BU/gWE+WlDaWfB7jGWOHcELk7S1+vEX0yw5Ispu6auptECKAhvfLuCe8Y YmAsY0PaIZRHsHZrWs7SYd4iQ2dcM/WBFC2DA= Received: by 10.210.117.1 with SMTP id p1mr160970ebc.53.1220988262207; Tue, 09 Sep 2008 12:24:22 -0700 (PDT) Received: by 10.210.24.6 with HTTP; Tue, 9 Sep 2008 12:24:22 -0700 (PDT) Message-ID: <5cf132c0809091224t39af4650v716df9cd77f7aab5@mail.gmail.com> Date: Tue, 9 Sep 2008 14:24:22 -0500 From: "Mark Steitle" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: 20B Update from Mark? In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_121039_23842573.1220988262206" References: ------=_Part_121039_23842573.1220988262206 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Al, I had the fuel calibration pretty close at one time, then I sent the unit back for an upgrade and had to start over with calibration. I can see that we generally use the same procedure for calibration. I did use care to calibrate my capaicitive probes very accurately, so I give them more credence at this stage of the game than the EM-2 readings. The EFIS gives me totals in each tank, and the EM-2 gives me total fule on board. Here's the process I have been using: Power up the EFIS and let it stabilize, total the readings from both tanks, then change the value in the EM-2 to agree. That gives me a starting point. I then compare readings after the flight, and again after adding fuel. After doing this a few times, I can see which way the EM-2 is off and I can tweak the calibration and then repeat the process. After a while, it is pretty close. But like = I said, I had it close until I sent it in for an upgrade. I really need to write stuff down. ;-) Mark On Tue, Sep 9, 2008 at 10:59 AM, Al Gietzen wrote: > Currently the fuel burn is registering high, resulting in a fuel > remaining reading lower than what I actually have in the tanks. I hadn't > made the connection between that and the GPH reading, but now I see that > they are inter-related. I usually don't fill the tanks to the brim as I = can > carry 96 gallons total but I only fly about 100-150 miles round trip. Wh= y > carry all that extra weight. > > Mark; > > I rarely fill my tanks either. I have a calibrated dip stick I use to > measure the fuel at one point; then keep track of how much I add over a > series of flights; then measure again. Then compare actual measured with > EM2 readout, and adjust the FFCAL as discussed in the manual. I have foun= d > that difference between EM2 totalizer and measured is different for a 4-5= hr > flight than for a series of shorter flights, which I guess isn't too > surprising, but it gets you close until you make those long flights. > > 96 gallons =96 wow, that should give you quite a range. > > Al > > > ------=_Part_121039_23842573.1220988262206 Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Al,
 
I had the fuel calibration pretty close at one time, then I sent = the unit back for an upgrade and had to start over with calibration.&n= bsp; I can see that we generally use the same procedure for calibration.&nb= sp; I did use care to calibrate my capaicitive probes very accurately, so I= give them more credence at this stage of the game than the EM-2 readings.&= nbsp; The EFIS gives me totals in each tank, and the EM-2 gives me tot= al fule on board. 
 
Here's the process I have been using:  Power up the EFIS= and let it stabilize, total the readings from both tanks, then change= the value in the EM-2 to agree.  That gives me a starting point. = ; I then compare readings after the flight, and again after adding fue= l.  After doing this a few times, I can see which way the EM= -2 is off and I can tweak the calibration and then repeat the pro= cess.  After a while, it is pretty close.  But like I said, I had= it close until I sent it in for an upgrade.  I really need to wr= ite stuff down.  ;-)
 
Mark 

On Tue, Sep 9, 2008 at 10:59 AM, Al Gietzen <ALVentures@cox.net<= /a>> wrote:

<= span style=3D"FONT-SIZE: 12pt">Currently the fuel burn is registering high,= resulting in a fuel remaining reading lower than what I actually have in t= he tanks.  I hadn't made the connection between that and the GPH r= eading, but now I see that they are inter-related.  I usually don'= t fill the tanks to the brim as I can carry 96 gallons total but I only fly= about 100-150 miles round trip.  Why carry all that extra weight.

Mark;

I rarely fill my tanks either. =  I have a calibrated dip stick I use to measure the fuel at one point;= then keep track of how much I add over a series of flights; then measure a= gain.  Then compare actual measured with EM2 readout, and adjust the F= FCAL as discussed in the manual. I have found that difference between EM2 t= otalizer and measured is different for a 4-5 hr flight than for a series of= shorter flights, which I guess isn't too surprising, but it gets you close= until you make those long flights.

96 gallons =96 wow, that should= give you quite a range.

Al

<= span style=3D"FONT-SIZE: 12pt"> 


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