Mailing List flyrotary@lancaironline.net Message #57014
From: Richard Sohn <res12@fairpoint.net>
Subject: Re: [FlyRotary] Re: Am I Alone??
Date: Sun, 13 Nov 2011 10:55:33 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
My problem is not the CDI in principal, it is the way MSD has set the trigger signal conditioning, what I can not accommodate.
The "Lethal" amounts of energy will start the engine under almost any condition.
We have grown up with " never turn a prop or trigger a gun, they may be loaded".
 
----- Original Message -----
Sent: Sunday, November 13, 2011 9:14 AM
Subject: [FlyRotary] Re: Am I Alone??

I am confused. What is the "CDY and the "TSI"  igniter?
 
MSD systems provide "Lethal" amounts of energy from the coil secondary. If you get your
"Pacemaker" in the circuit.
 
This is not an "ouch that hurt," type of sting. It is a sitting in the grass trying to remember your name style event.
 
The MSD will trigger from a very small diameter reluctor wheel and at very low cranking speeds. It will also trigger and fire the coil once when energized (ignition turned on) and once when the ignition is turned off. The racer has started instantly from turning on the ignition with no starter energized.  
 
Never reach or walk through the arc of the propeller. Never move a propeller blade at all
unless YOU KNOW that the ignition system is disabled.
 
Lynn E. Hanover
 
 
In a message dated 11/12/2011 11:39:16 P.M. Paraguay Daylight Time, res12@fairpoint.net writes:
Final solution! No CDY. Using two individual coils with a TSI igniter each. No more low speed issues.
 
Installation on the test stand is complete, and will be tested in the next two days. If nothing bad happens, installation in the airplane will be competed in a couple of days.
 
I hope this is not to confusing.
 
Richard Sohn
N2071U
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