Mailing List flyrotary@lancaironline.net Message #6000
From: John Slade <sladerj@bellsouth.net>
Subject: RE: [FlyRotary] Re: EC2 - No spark problem
Date: Fri, 27 Feb 2004 08:34:31 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
Thanks for all the input.
After a few calls to Tracy and a little help from Buly I tracked down the problem(s) and last night.
She went BrrrraaaaPPP for the first time at 9pm. What a beautiful sound! Not just because I wanted to hear it, but also because it truely IS a beautiful sound. Somewhere between a deep growl and race car whine it spoke of power and precision. I'm looking forward to hearing it again today - this time I'll turn the fuel pump on so I get more than 6 seconds worth. :)
 
The problems were -
1. Crank Angle Sensors too far away from trigger wheel - added a thin washer
2. CAS wiring reversed - pulse should be positive as you approach quickly with steel.
3. Cranking voltage/speed too low
4. And the winner......12v supply to lead coils suspect. It tested as 12V, but the plugs wouldn't spark. When I cross wired to the trailing coil supply the plugs sparked. I thought volts were volts. Apparantly not.
 
Many thanks to Tracy for his instant availability, patience and encouragement.
John (this is where I get my own back on the spam cans doing run ups outside my hangar door)
 
 
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