Not sure I followed the logic on using the same pot for program &
mixture. It just would not work unless there is something I missed
completely. I think there is a misunderstanding on the use of the
program knob. Also remember that the program knob is used for other
functions besides programming the mixture correction table. Having to
mess with the mixture while adjusting other things would be really
bad.
I did think about using the program pot for mixture on B controller but
that would be very confusing when programming on the B controller for most
people. The mixture pot would then be used for program setting on B
controller. Actually this would work OK for me or someone who fully
understood the operation of the EC2. For a reference point, at least
50% of the builders who call for support thinking that their EC2 is not working
correctly, answer the question "Does it do the same thing on B
controller?" by saying "I forgot to try that." I really can't expect
the average user to remember to reverse these two functions when switching
controllers.
----- Original Message -----
Sent: Friday, December 23, 2005 6:32
PM
Subject: [FlyRotary] Re: Question for
Tracy - was: Off Topic "Switch Placements"
Tracy,
Why not just use the "Program" pot for the mixture of one
controller say "A" and the
Mixture pot for the "B" controller. This way you have true
redundancy.
I know that you use the program pot now for programming the mixture but
that never made much sense to me.
If you are going to set the "Mixture" pot to a certain position and then
match that same position with the Program pot and read the program pot's
postion to set the mixture
setting why not just read the Mixture pot's position and use it's value
to program the setting. This seems like it would also be more accurate as the
two pots at the same position could output slightly different values.
This provides true redundancy AND reduces the complexity of tuning.
If the engine stumbles or quits just flip the A/B switch which should be
second nature anyway.
Just an idea for you to ponder.
Merry Chistmas
Jim Maher
Tracy Crook <lors01@msn.com>
wrote:
I have pondered various fail safe strategies for this
scenario (for example, make the B controller fixed at midrange mixture) but
so far have not been satisfied with any of them. Anyone have other
ideas to be considered?
Tracy
----- Original Message -----
Sent: Thursday, December 22, 2005
4:50 PM
Subject: [FlyRotary] Question for
Tracy - was: Off Topic "Switch Placements"
This reminds me to ask a question to Tracy that wanders
through my brain
when there is no civilization in sight out the
cockpit windows.
Tracy: If the mixture pot fails (not all that
uncommon to get an open
failure in potentiometers) what does the EC2
firmware do to the mixture?
Perry
Casson
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