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From: "Joe Ewen" <jewen@comporium.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1984306@logan.com>
Subject: Re: [FlyRotary] Re: RWS ECU Switch call-out
Date: Fri, 13 Apr 2007 22:04:44 -0400
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A thought on the injector power supply.  In my installation I use a separate 
power supply for primary and secondary injectors (as well as for the coils.) 
In my case primaries are wired to battery 1 and secondaries are wired to 
battery 2.  Even if you are using a single battery (IMO) its beneficial to 
have separate wiring/switches/overload devices.  If a power supply wire, 
switch, overload, connection were to open there goes all supply to the 
injectors (or coils.)  It may become undesirably quiet.  This comment could 
of course springboard to much debate, the thing to consider - is there a 
single point of failure?

Joe


----- Original Message ----- 
From: "Bob White" <rlwhite@comcast.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, April 13, 2007 9:43 PM
Subject: [FlyRotary] Re: RWS ECU Switch call-out


> Hi Chris,
>
> I have attached a diagram from my disable switch wiring instructions. I
> have been selling a larger switch to some of my cable customers. They
> have nice big handles and a good solder terminal.  The diagrams are for
> NKK S6A DPDT (injector disable) and S308 SPDT (coil disable).  The
> center terminal is connected to the top terminal when the switch is
> down, and the bottom terminal when it's up.  Check to make sure your
> switches work that way.  They probably do.
>
> I reversed the center and outer terminals on one of the connections as
> compared to Tracy's diagram, but it's electrically the same.  It was
> just easier to wire.
>
> Bob W.
>
> On Fri, 13 Apr 2007 19:05:48 -0600
> "Christopher Barber" <CBarber@TexasAttorney.net> wrote:
>
>> Ok folks,
>>
>> Maybe I have just read past it several X 10 times, but what are the 
>> switch
>> number call outs for the DPDT switches for the injectors in Tracy's ECU 
>> set
>> up.  I am still in the throws of a large electronic learning curve, but I 
>> do
>> not see how to determine what wire goes to what connection point.  I ran 
>> it
>> by my EE buddy and he said it should be numbered (if'n he understood the
>> basic level of my question).  Please fill me in on what I am missing.  I
>> don't mind an informative lecture on how this is so basic, how could I 
>> not
>> know......but what I really want is a nice explanation and/or diagram 
>> which
>> even a 5th grader (who is not staring on a TV show) could figure out.
>>
>> As always, THANKS.
>>
>> All the best,
>>
>> Chris
>>
>> Christopher Barber
>> Attorney and Counselor at Law
>> 5110 Bissonnet, No 418
>> Bellaire, Texas 77401
>>
>> Serving the Needs of Senior Texans
>>
>> 281-464-LAWS (5297)
>> 281-754-4168 Fax
>> www.TexasAttorney.net
>>
>>
>>
>> --
>> Homepage:  http://www.flyrotary.com/
>> Archive and UnSub: 
>> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>


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