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 -----

From: George Lendich

To: Rotary motors in aircraft

Sent: Sunday, August 28, 2005 6:36 PM

Subject: [FlyRotary] Re: Analog Digital system comparison

 

Ed,

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  Very limited upgrade capability and just outdated (well, it actually was when I designed it - but, being an old analog type myself,  it was a interim system until I could learn a bit about this digital world)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. 

 

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/