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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
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