X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail01.syd.optusnet.com.au ([211.29.132.182] verified) by logan.com (CommuniGate Pro SMTP 5.0c1) with ESMTPS id 685367 for flyrotary@lancaironline.net; Mon, 29 Aug 2005 03:53:19 -0400 Received-SPF: none receiver=logan.com; client-ip=211.29.132.182; envelope-from=lendich@optusnet.com.au Received: from george (d220-236-66-119.dsl.nsw.optusnet.com.au [220.236.66.119]) by mail01.syd.optusnet.com.au (8.12.11/8.12.11) with SMTP id j7T7qPN5031043 for ; Mon, 29 Aug 2005 17:52:29 +1000 Message-ID: <000b01c5ac6e$d79651e0$7742ecdc@george> From: "George Lendich" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Analog Digital system comparison Date: Mon, 29 Aug 2005 17:54:09 +1000 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01C5ACC2.A8386BF0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C5ACC2.A8386BF0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Ed! George ( down under) Hi George, No comparison. Tracy's offers much more in terms of both engine and = aircraft performance data. This is not a Fuel management system, I = refer to it as a Fuel Monitoring System. It offers no aircraft nor = engine performance data (other than RPM, It focuses on Fuel Flow, Fuel = Used and Air/Fuel Ratio indicator). If I am able to read the EC2 Fuel = Map and display the fuel MAP then it will provide a bit more insight in = how well your EC2 MAP is set up. You'll still have to change it using = the EC2 controls, so it is probably better than having nothing. But, I = would never consider it even close to what Tracy's EM2 can provide. = Plus, I am certain Tracy will continue to add to its capabilities. I can see no reason anyone who has an EM2 would ever want/need one - = but, if you don't have the panel space for an EM2 then this might be a = better than nothing alternative. Ed A ----- Original Message -----=20 From: George Lendich=20 To: Rotary motors in aircraft=20 Sent: Sunday, August 28, 2005 6:36 PM Subject: [FlyRotary] Re: Analog Digital system comparison Ed,=20 How does this differ from Tracy's system of fuel management ? George This may be of interest to some. Here are photos of my two fuel monitoring systems, comparing the = original Analog system with the new Digital System. The analog system served long and well, giving accuracy of fuel = flow and fuel used to less than a 1% error. However, it was large, had = 9 chips and only provided two bits of data - Fuel Flow and Fuel Used as = displayed information. Any change required a change to the design, new = chips and a new board. Very limited upgrade capability and just = outdated (well, it actually was when I designed it - but, being an old = analog type myself, it was a interim system until I could learn a bit = about this digital world) The digit system is much smaller, the one shown used 2 chips = (since reduced to one chip- the microprocessor) and provides 9 different = fuel factors (including Air/Fuel ratio indication), has user settable = alarms, remembers fuel parameters at shut down and has an automatic = calibration system. Software changes can be easily (relative speaking) = make to accommodate changes and upgrades. Currently waiting for a new = board for version 2 of the digital - this one will have a larger LCD = screen (but will still fit 2 1/4" hole) with graphical capability which = I hope to be able to display the EC2 fuel map in graphical form. The = activation buttons will be re-positioned so that even my fat fingers can = better push them. =20 So after many years of use - old reliable (but out-dated) analog = system is being retired with honors. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com -------------------------------------------------------------------------= - -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_0008_01C5ACC2.A8386BF0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks Ed!
George ( down under)
 
Hi George,
 
No comparison.  Tracy's offers much more = in terms=20 of both engine and aircraft performance data.  This is not a Fuel = management system, I refer to it as a Fuel Monitoring System.  It = offers=20 no aircraft nor engine performance data (other than RPM,  It = focuses on=20  Fuel Flow, Fuel Used and Air/Fuel Ratio indicator).  = If I am=20 able to read the EC2 Fuel Map and display the fuel MAP then it = will=20 provide a bit more insight in how well your EC2 MAP is set up.  = You'll=20 still have to change it using the EC2 controls, so it is = probably=20 better  than having nothing.  But, I would never consider it = even=20 close to what Tracy's EM2 can provide.  Plus, I am certain Tracy = will=20 continue to add to its capabilities.
 
I can see no reason anyone who has an EM2 = would ever=20 want/need one  - but, if you don't have the panel space for an = EM2=20  then this might be a better than nothing = alternative.
 
Ed A
 
 
----- Original Message -----
From:=20 George Lendich
To: Rotary motors in = aircraft=20
Sent: Sunday, August 28, 2005 = 6:36=20 PM
Subject: [FlyRotary] Re: = Analog Digital=20 system comparison

Ed,
How does this differ from Tracy's = system of=20 fuel management ?
George
This may be of interest to = some.
 
Here are photos of my two fuel monitoring = systems,=20 comparing the original Analog system with the new Digital=20 System.
 
The analog system served long and well, = giving=20 accuracy of fuel flow and fuel used to less than a 1% error.  = However, it was large, had 9 chips and only provided two bits of = data -=20 Fuel Flow and Fuel Used as = displayed=20 information.  Any change required a change to the design, new = chips=20 and a new board.  Very limited upgrade capability and just = outdated=20 (well, it actually was when I designed it - but, being an old = analog type=20 myself,  it was a interim system until I could learn a bit = about this=20 digital world)
 
The digit system is much smaller, the one = shown used=20 2 chips (since reduced to one chip- the microprocessor) and = provides 9=20 different fuel factors (including Air/Fuel ratio indication), has = user=20 settable alarms, remembers fuel parameters at shut down and has an = automatic calibration system. Software changes can be easily = (relative=20 speaking) make to accommodate changes and upgrades.  = Currently=20 waiting for a new board for version 2 of the digital - this one = will have=20 a larger LCD screen (but will still fit 2 1/4" hole) with = graphical=20 capability which I hope to be able to display the EC2 fuel map in=20 graphical form.  The activation buttons will be re-positioned = so that=20 even my fat fingers can better push them. 
 
So after many years of use - old = reliable (but=20 out-dated) analog system is being retired with = honors.
 
Ed
 
Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, NC
eanderson@carolina.rr.com

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