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Date: Tue, 16 Jun 2009 02:33:05 -0500
From: Christopher Barber <CBarber@TexasAttorney.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: More Wire Separation?
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OK, I think I got separate wire runs for the needed runs to the EC2.  To 
recap, from what I recall the injector wires should be segregated in a 
bundle as well as the wires to the coils in a separate bundle.  I 
believe the wires to the Crank Angle Sensor do NOT need to be bundled 
separately since they are shielded.

My question is, when segregating the bundle for the injectors Tracy 
states to segregate wires 17, 18, 35, 36 & 19 and 37 from the EC2.  For 
this, does it just include these wires are should the POWER wires for 
the injectors also be segregated? 

Also, the one wire that goes from the Rotor One Primary injector to the 
EM2/engine monitor, should it be segregated along with the other ones 
since int is connected to the injector?

Finally, as to wires 19 and 37.  In Tracy version of the wire diagram it 
shows these two ground wires grounded on the airframe.  He also states 
that these two wires should be as short as possible.  However, in the 
alternate wire diagram provided in the manual (the one with the coil 
wire harness that is in color online), and the diagram that is easier 
for me to wrap my mind around, it shows these two wires ground to the 
engine.  To ground to the engine makes it a pretty long wire run.  I 
cannot ground to the airframe in a composite.  IS IT ACCEPTABLE to 
ground these two wires to my ground "forest" (the one from B&C per 
AeroElectric/Bob Knuckles) on my firewall.  This would allow for these 
two wires to be quite short....from about four feet to about 10 inches.

Thanks for your patience guys.  Doing this stuff now is much easier on 
the third or forth attempt <g>.....I gotta do something while waiting 
for my new "Minstral type" injectors to arrive <g>

All the best,

Chris