Mailing List flyrotary@lancaironline.net Message #31925
From: Tracy Crook <lors01@msn.com>
Subject: Re: [FlyRotary] Re: Another case of heat-soaked coils?
Date: Tue, 23 May 2006 18:42:09 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

I missed that.  Question is, was the engine really varying that much or was it something else?  The EM2 gets tach info by watching the primary injector switching.  If the injector drive was erratic that would make the tach go wacky.  John said controller A & B worked the same so I ruled out controller problems.  An intermittent connection to the injector would fit the symptoms though.
 
Tracy
----- Original Message -----
Sent: Tuesday, May 23, 2006 5:53 PM
Subject: [FlyRotary] Re: Another case of heat-soaked coils?



John Slade's observation included info that the EM-2 was showing wild
swings in RPM.  Is this a clue to the problem?  I'm not sure coils
failing would take out the tack info.   Is there another failure mode
that could cause the tack to malfunction and the engine to sputter -
crank angle sensor failure,  bad wiring connection from the EC-2 to the
coils?

Dennis H.


>

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