Tracy,

 

I hate to even ask, as I gotta still go out and test the serial wires, however, is there a way...uh, simple way for us non EE types to check if I blew the thing again?  TIA.

 

Chris

 

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 Tracy Crook
Sent: Mon 7/27/2009 1:50 PM

To: Rotary motors in aircraft

Subject: [FlyRotary] Re: Just livid.....but think anyway.

 If the serial data link between the EC2 and EM2 is blown (by a missing ground or other reason) as indicated by the NOP flashing in the EM2  TACH window, it means that the EM2 and EC2 can no longer communicate each other.

If they can no longer communicate, that means the EM2/3 can not possibly know or display what is in the EC2/3 MAP table.   So,  at this point you should not conclude that the MAP table is blown, corrupted, blank, etc.

Tracy

On Mon, Jul 27, 2009 at 2:09 PM, Christopher Barber <CBarber@texasattorney.net> wrote:

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.
>>>
>>>     >>>
>>>      >> --
>> Homepage:  http://www.flyrotary.com/
>> Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>    >
>
>  
--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:
http://mail.lancaironline.net:81/lists/flyrotary/List.html


--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html


Warning: This e-mail transmission, and any documents, files or previous e-mails attached to it, may contain confidential information that is legally privileged. If you are not the intended recipient or the person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify us by telephone at 713-662-8132 and destroy the original transmission and its attachments without reading them. Thank you.

--
Homepage:  http://www.flyrotary.com/
Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html

Warning: This e-mail transmission, and any documents, files or previous e-mails attached to it, may contain confidential information that is legally privileged. If you are not the intended recipient or the person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify us by telephone at 713-662-8132 and destroy the original transmission and its attachments without reading them. Thank you.