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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: Just livid.....
Date: Sun, 26 Jul 2009 15:48:35 -0400
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Chris, 

I presume you meant there was no strain on the wire - just because it is
short does NOT mean there is no strain on it.  In fact, a short length of
wire (particularly if too short) can put tremendous strain on connectors, so
length has little to nothing to do with the wire being under strain.

A short(tight) wire is also more subject to vibration fatigue as it is less
likely to have much damping to vibrations.

As several have said, this just MIGHT also be the solution to some of your
EC2 problems.  Let's hope it is.

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: 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
>>     
>
>
>   

--
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