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From: "Jim Mosur" <jmosur@interlog.com>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: Flooding on startup....
Date: Mon, 16 May 2005 20:46:57 -0400
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Hi Ed.


Off the subject, I noticed in one of your e-mail's that you said you
were waiting for a gear leg, nose or fuse. ? What happened ? I have
heard that 6A's and 7A's have been breaking their nose gear.

We have over 40 hrs. on the 7A goes like hell.

 Jim Mosur

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ed Anderson
Sent: Friday, October 14, 2005 11:28 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Flooding on startup....


Buly,  If I understood your findings.  There are eight wires to the 
injectors (2 per injector).  Four (one per injector ) will be connected
to 
the 12Vdc power source through your injector switches/CB.  All will have

12Volts on them if your injector switches are on and there is power to
them 
(engine not running). The other  Four of the 8 wires (one per injector) 
will go back to the EC2 (these are the wires that trigger the
injectors). 
Remember that all the injector has electronic-wise is a coil of wire.
So if 
you have 12V on one end of a coil of wire, you will have 12V on the
other 
end - if it is NOT grounded.  You must have current flowing through the
coil 
to produce a voltage drop and if the one side is not grounded, there is
no 
current flow and no voltage drop so the wire on both sides of the
injector 
will measure 12Vdc.

The way the EC2 triggers the injectors is to ground this wire through a 
transistor inside the Ec2.  So only the periodic  grounding of the one
side 
will activate the injector.  Therefore, if the engine were running you
would 
find that one side of the injector will always have 12Volts on it and
the 
other side will be pulsating between 12 volts and zero volts (this the
wire 
going to the Ec2).  If the engine is not running (and there is power to
the 
injectors) then there will be 12Vdc on both sides of the injector
connection 
or on all 8 wires to the injectors.

Ed A


----- Original Message ----- 
From: <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, October 14, 2005 11:55 PM
Subject: [FlyRotary] Flooding on startup....


> Tonight I spent some time checking around the engine. With both inj.
> switches on, I have 12V on all the wires going to the injectors? As
far as 
> I know, there is one 12V feed from the switch to each P/S injectors
and 
> one wire for each injector comming from the EC2 providing intermitten 
> ground. If I'm right, how come there is the same voltage on all the
wires?
> Buly
>
> BTW few months ago the engine was running perfect? I have no idea what
> caused all this trouble?
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> 


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