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Date: Tue, 08 Jan 2008 15:23:25 -0500
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From: Micah Froese <micah@froese.com>
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Subject: Re: [LML] Re: One mag, One electronic ignition
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Just as a point of reference, I have 1 Slick mag and one Lightspeed 
ignition on my IO-550  Legacy, 10:1 pistons.  After 250 hours I am very 
happy with the setup.  Engine will start on either system, normal start 
is on both.   Of course it starts much quicker on the electronic 
ignition.  Mag check has a 20-30 rpm drop on electronic, and 60-90 on 
the mag.  Spark plugs wear a little quicker on the EI side, course 
they're only $3.00 each to replace. 

Only issue I've had is 1 failure early on , a hall effect sensor failed 
due to an installation error.  The crank position pickup board was 
touching the baffling in one spot, during flight the baffling moves ever 
so slightly which caused a mechanical interference between sensor and 
the rotating magnet.  This caused 2 cylinders not to fire on the EI 
side.  Noticed the problem during and inflight mag check, landed, had 
board repaired and improved by Klaus and haven't had a problem since.  I 
will give Klaus credit, he has made 2 improvements since then, a bigger 
magnet so that the space between the rotatting magnet and sensor can be 
increased, also a metal striker plater that protects the whole board.

Micah Froese
Lancair Legacy
250 hours