In a message dated 3/11/2005 9:17:33 A.M. Central Standard Time,=20 JJHALLE@stoel.com writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>I am=20 getting a discount on two replacement mags which I intend to use while I=20 figure out what electronic system to go to. I intend to check them=20 frequently, and I don't mean the run-up check that I have done before ever= y=20 take-off and that has always been perfect. Check out whatever Deakin= =20 article claims that runup checks are a complete waste of time, which I now= put=20 more stock in than I used to. I have no idea if the controller box i= s=20 contributing anything but I intend to test that too when I get it=20 reinstalled. And I still don't know why the engine missed only with=20= the=20 LASAR system on. Without it, I would presumably still be fat, dumb a= nd=20 happy (instead of being only two of the foregoing) flying around with two=20 "shot" mags tbat do just fine on runup.

I have written before about the LASAR system and will add just a bit=20 more. I was shocked when I added a panel switch to cut the power to LA= SAR=20 controller, thus making it run on the mags. Initially I had better=20 performance on the mags only because the LASAR switching relays (in the mag=20 bulge in the cable) failed so that the controller and the mags were both try= ing=20 to issue sparks thus making the system perform worse than mags only. =20 Unison happily replaced the "mags."

I have run my IO 320 with the LASAR O-320 controller (most aggressive=20 timing advance), the O-360 (less aggressive) and the IO-360 (least aggressiv= e)=20 and I do not see much difference below 24" MAP (where advancement shoul= d=20 begin). The benefit has been "electronic" ignition operation at engine= =20 start and for high power, low altitude flights (races). On the other hand, .= 018=20 plug gaps (so the backup mag operation can make the spark jump) somewha= t=20 defeats the better, more consistently delivered "electronic" spark.

So......

I have looked at the P-Mags (complete self-powered electronic ignition)= at=20 emagair.com, but I am concerned that not enough experience exists with=20 "peculiar" engine setups - like mine.

I have finally decided to do the extra work and install twin Lightspeed= =20 electronic ignitions with a backup battery.

Join me in the 2005 Air Venture Cup Race and I'll tell you how they wor= k=20 for me.=20

Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)

Fai= r=20 and Balanced Opinions at No Charge!
Metaphysical Monologues used at your=20= own=20 Risk.

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