Mailing List Message #63385
From: Michael Logan <>
Subject: Re: [FlyRotary] Re: Tach signal
Date: Tue, 23 May 2017 13:37:28 -0500
To: Rotary motors in aircraft <>

I have your EC2 controller on my Subaru EA81.  It has been sitting for 12 years and I am just now getting back to working on it.  It seems to run fairly smoothly on controller A, with just a slight miss at higher RPM's.  When I switch to the B controller, the engine runs rough.  I checked the gap on the ignition pickups and one is .008" and the other is .017".  Could this be causing my rough running B controller?

I miss seeing you at Sun n Fun.

Mike Logan

On Tue, May 23, 2017 at 1:15 PM, Tracy Crook <> wrote:

It is the yellow wire on the trailing coil assembly that is the tach drive signal.  I never looked at the signal but I used it to drive an analog car tach setup for a 4 cyl. Engine on my first installation. 




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From: Joseph Berki
Sent: Tuesday, May 23, 2017 2:08 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Tach signal


I would like to use the tach signal from the lead igniter I believe is present on the yellow with blue tracer wire.


Does anyone know what this signal is?  Is it a 12volt pulse?  How many pulses would represent a complete revolution?


Thanks for any help


Joe Berki

Limo EZ



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