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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 -----
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Very limited upgrade capability and just outdated (well, it actually was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
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