Mailing List flyrotary@lancaironline.net Message #37736
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Blown EC2 Serial Ports was [FlyRotary] Re: Frustration. The seriesl....
Date: Thu, 7 Jun 2007 16:49:20 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
 
 
 
2.   A short (possibly from probing around the backside of the EC2 connector, I did that once : ) or a missing ground (even a momentary loss) has caused one or both of the units to have blown their serial data drivers or receivers.  Plugging equipment in with the power on can cause either of these conditions. 
 
I know this won't help but #2 has happened often enough that the next iteration of the EC2 and EM2 will have protection on these two lines.
 
 
Yes, I can attest that if you plug equipment in while power is on - it can not only blow the Serial communcations out/in the EC2, but can also:
 
1.  Completely wipe out the B controller
2.  Place the A controller in the "Cold Start" function
3. Make it impossible to run the engine with all 4 injectors activated (well, almost-it will sputter along with the cold start activated - IF you put the mixture control in FULL Lean).
4. Make it necessary to fly with only two injectors activated (one pair)
 
 
Let me know if there is going to be a backward modification for existing EC2s.  And if so, when the modification is available and I'll send mine in {:>)
 
By the way, Welcome back home and to civilization.
 
Ed
 
 
 
Tracy
----- Original Message -----
Sent: Saturday, May 19, 2007 6:32 PM
Subject: [FlyRotary] Frustration. The seriesl....

Thanks John,
I had another  "going nowhere" day. My neighbor's Lycoming start 
looking very enticing :(.
After day's work with another A&P that's much better with 
electronics, I made no progress.
NOP is still flashing and the injectors are dead. The rest is working 
fine. We should compile a list of
causes and solutions for the flashing NOP and Tracy should have them 
in the manual?
I will not bore you with the all the details today.
Buly


On May 19, 2007, at 1:29 PM, John Downing wrote:

> Buly, quite often as I work on my project, which I refer to as 
> Twice, as it seems like that is the way progress is made.  Having 
> spent countless hours on a tractor and driving trucks, I would 
> entertain myself by doing rhymes, so this morning as I was redoing 
> the primer on the wings of the plane, this little ditty came to me, 
> so I will share it you in your plight in trying to get your engine 
> started.  JohnD
> ----- Original Message -----
> From: John Downing
> To: Tailwind
> Sent: Saturday, May 19, 2007 10:55 AM
> Subject: [TailwindForum] Builders tip - painting
>
> Be sure that you have all your drain and other holes located before 
> you start spraying this heavy primer around.  Of course all you 
> other builders know that.
>
>        Murphy's Law.........From the Farm
>
>        In a younger day, things went
>        right most all the time,
>        which to me seemed just fine.
>
>        Now as years pass, Murphy has
>        chose to tag along.
>        filling my days with many wrongs.
>
>        This morning as I was working on Twice, my thoughts as 
> always were filled with mindless dribble.
>
>        Farmer John
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