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Hi Dave,
Rev 2 should be a better version. Will have a
graphical screen, larger screen (and letters) and the input buttons will be
arrange so that fat fingers can better access them. I have the board
designed and ordered while I current working on the software for the
graphical display. If I can get the graphical screen working I should be
able to also graphically display the EC2's fuel map settings - so if your engine
stumbles when the Map shows a "hole/dip" in your settings - you can better
understand why {:>).
Ed
----- Original Message -----
Sent: Monday, August 29, 2005 12:19
AM
Subject: [FlyRotary] Re: Analog Digital
system comparison
But Ed, when can I get MINE? !!???!!!
:-)
On 8/28/05, Ed
Anderson <eanderson@carolina.rr.com>
wrote:
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 Very limited upgrade capability and just outdated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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