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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: Hey, Great find!  RE: [FlyRotary] Re: Just livid.....
Date: Mon, 27 Jul 2009 14:48:48 -0400
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Chris, I know its easy to offer advice, but I have a saying

 "...anything that wants to break on the ground is just fine with me!..." 

But, then given my glider experience what else would you expect from me?
{:>)

You really should be congratulating yourself on finding that bad ground
wire.  As someone mentioned, it could have been hanging by a few strands for
a while - and the vibration of flight would likely have caused it to fail
before long.


 So, Catching that ground wire on the ground rather than in the air was very
fortunate.  I am not surprised you found the A controller fuel MCT flat
lined.  With no designated ground, electronics will find their own way to
ground if there is any path possible - but, it may not be a benign path. 

Hopefully, all it will take is a reset of your "A" controller to default,
since the B controller is apparently still functioning, that may do the job.

Regarding you NOP signal, I don't have an EM2, however, I do know it uses
the serial port of the A controller to communicate with. So the "A"
controller's problem may extend to more than the MCT settings.   Resetting
all the modes (not just the fuel map) on controller "A" is what I would do.

However, I would at least check with Tracy about having power to the EC2
without its designated ground wire.  


Ed

Ed Anderson

Rv-6A N494BW Rotary Powered

Matthews, NC

eanderson@carolina.rr.com

http://www.andersonee.com

http://www.dmack.net/mazda/index.html

http://www.flyrotary.com/

http://members.cox.net/rogersda/rotary/configs.htm#N494BW

http://www.rotaryaviation.com/Rotorhead%20Truth.htm

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Christopher Barber
Sent: Monday, July 27, 2009 2:10 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Just livid.....

I turned on the EC2/EM2 last night and as expected the NOP is flashing 
at me, laughing at my meager attempts to get my airplane airborne.  
Also, I checked out the MAP and everything is flat-lined. All the bars 
are all the way down at the bottom.  Normally, my engine runs well with 
all bars in the middle (at 0).  I did not look at the actual numbers, 
but I think it must be -127 (is that right).  I saw everything down at 
the bottom, and went back to sanding my cowlings and wheel pants.....for 
now.

I guess I will try to reset to factory defaults (which is where it has 
been running well so far) tonight.  See if it even takes the reset. 
<sigh>  In the past, the NOP meant a trip back to Tracy. <heavier sigh> 
(plus trying to figure out the why (broken ground???....but what else, 
if any) <even heavier sigh>

All the best,

Chris

Bill Bradburry wrote:
>
> Chris,
>
> Even if the wire was not completely separated, it was probably only 
> connected by a couple of strands and as it moved (vibrated?) maybe 
> some of the other strands made contact from time to time causing no 
> telling what kind of intermittent effects.  Lucky for you, it finally 
> fell apart and you found it.
>
> Bill B 
>
>  
>
> ------------------------------------------------------------------------
>
> *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] 
> *On Behalf Of *Chris Barber
> *Sent:* Sunday, July 26, 2009 4:26 PM
> *To:* Rotary motors in aircraft
> *Subject:* [FlyRotary] Re: Just livid.....
>
> Perhaps the cause of many problems, however, the broken wire was NOT 
> broken two weeks ago when I rewired the ECU and got it running so 
> well.  I just happened to notice it right off yesterday (gee, what are 
> the odds of me finding something on the first thing I happened to 
> check.  Guessin' that will be the last time<g>).
>
>  
>
> I had to walk away yesterday, take a breath and focused on some micro 
> fill and sanding I needed to do. I at least FELT a bit productive in 
> spite of the demoralizing impact.  I hate the idea of sending the unit 
> back to Tracy again.  He may have had it more than I have.
>
>  
>
> I will play with the sanding stuff tonight and get back to the engine 
> directly.  I will be checking the MAP table first, but the NOP is what 
> really concerns/bothers me.  I am guessing the bad ground could have 
> been the cause, however, the NOP did NOT go away after I found the bad 
> ground.  I fear it may have trashed my serial circuit again.  Donno, 
> just speculation at this point. <sigh> Trying to keep a stiff upper 
> lip <g>
>
>  
>
> All the best,
>
>  
>
> Chris
>
> Houston
>
>  
>
> Cpl. Christopher Barber, JD
>
> Badge 330
>
> Bellaire Police Department
>
> 5110 Jessamine
>
> Bellaire, Texas 77401
>
>  
>
> 713-668-0487
>
> 713-662-8289 fax
>
>  
>
> CBarber@BellairePolice.com
>
>  
>
> ------------------------------------------------------------------------
>
> *From:* Rotary motors in aircraft on behalf of Bill Bradburry
> *Sent:* Sun 7/26/2009 2:03 PM
> *To:* Rotary motors in aircraft
> *Subject:* [FlyRotary] Re: Just livid.....
>
> Chris,
> I would be surprised if you didn't just solve a whole passel of problems
> with your EC-2.  There is not telling what that cut ground connection was
> doing over the past.  High resistance, intermittent, open..who knows.
> Fixing this should make your EC-2 much more solid.
> Bill B
>
> -----Original Message-----
> From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
> Behalf Of Christopher Barber
> Sent: Sunday, July 26, 2009 2:08 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Just livid.....
>
> Thanks guys. I wrote NOS...course, I meant NOP.
>
> Hmmm, Al, I considered a second ground but was concerned that it may 
> cause a
> problem I would be unaware of.  Another testament to my ignorance, but
> learning and better everyday.  I shall see what I can do.
>
> I think I may have over crimped this particular connector.  When I 
> examined
> it, it seemed more cut than crimped.  Donno what caused that. 
> I use a ratchet crimper and have not had problems before, however, most of
> my previous crimps were 20 gage and not 16, so I will check the tool 
> and my
> process.
>
> There was no strain on this particular wire.  It is the very short ground
> Tracy recommend, IIRC, to be shorter than 12 inches.  I relocated my 
> ECU to
> accommodate this instruction.
>
> <sigh>
>
> All the best,
>
> Chris
> Houston
>
> Bob White wrote:
> > I agree, also if the wire can vibrate, do something to restrain it
> > better.
> >
> > Bob W.
> >
> > On Sat, 25 Jul 2009 23:12:25 -0500
> > Dave <david.staten@gmail.com> wrote:
> >
> >  
> >> Sounds like some strain relief is in order.
> >>
> >> Al Wick wrote:
> >>    
> >>> Oem solution for broken wire is brilliant. They use more than one
> >>> wire for both ground and power. Huge improvement in reliability.
> >>> 
> >>> -al wick
> >>>
> >>>
> >>>     I looked at the wires to the ECU and all was secure, EXCEPT, I
> >>>     notice my
> >>>     main (16gage) ground wire broke at the connector at the ECU.
> >>>     Repaired
> >>>     the wire.
> >>>
> >>>     
> >>>
> >>>      
> >> --
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