X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.25.9.103] (HELO ms-smtp-04-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 5.0c1) with ESMTP id 685095 for flyrotary@lancaironline.net; Sun, 28 Aug 2005 19:40:10 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.103; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-065-188-083-049.carolina.res.rr.com [65.188.83.49]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id j7SNdM1v002755 for ; Sun, 28 Aug 2005 19:39:23 -0400 (EDT) Message-ID: <001e01c5ac29$c1415c90$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Analog Digital system comparison Date: Sun, 28 Aug 2005 19:39:38 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001B_01C5AC08.39ECE730" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_001B_01C5AC08.39ECE730 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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_001B_01C5AC08.39ECE730 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi George,
 
No comparison.  Tracy's offers much more in = terms of=20 both engine and aircraft performance data.  This is not a Fuel = management=20 system, I refer to it as a Fuel Monitoring System.  It offers no = aircraft=20 nor engine performance data (other than RPM,  It focuses on =  Fuel=20 Flow, Fuel Used and Air/Fuel Ratio indicator).  If I am able = to read=20 the EC2 Fuel Map and display the fuel MAP then it will provide a = bit more=20 insight in how well your EC2 MAP is set up.  You'll still have to = change it=20 using the EC2 controls, so it is probably better  than = having=20 nothing.  But, I would never consider it even close to what Tracy's = EM2 can=20 provide.  Plus, I am certain Tracy will continue to add to its=20 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=20 Lendich
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 fuel=20 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,=20 it was large, had 9 chips and only provided two bits of data - = Fuel=20 Flow and Fuel Used as displayed = information. =20 Any change required a change to the design, new chips and a new = board. =20 Very limited upgrade capability and just outdated (well, it actually = was=20 when I designed it - but, being an old analog type myself,  it = was a=20 interim system until I could learn a bit about this digital=20 world)
 
The digit system is much smaller, the one = shown used 2=20 chips (since reduced to one chip- the microprocessor) and provides 9 = different fuel factors (including Air/Fuel ratio indication), has = user=20 settable alarms, remembers fuel parameters at shut down and has an = automatic=20 calibration system. Software changes can be easily (relative = speaking) make=20 to accommodate changes and upgrades.  Currently waiting for a = new board=20 for version 2 of the digital - this one will have a larger LCD = screen (but=20 will still fit 2 1/4" hole) with graphical capability which I hope = to be=20 able to display the EC2 fuel map in graphical form.  The = activation=20 buttons will be re-positioned so that even my fat fingers can better = push=20 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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