REFLECTOR: Emag/Pmag Reliability?
Paul W. Krasa
p.w.krasa at larc.nasa.gov
Wed Jan 25 15:23:43 CST 2006
Send an Email to Marc Z. on the Cozy builders group. He has extensive
experience with E/Pmag. In the end, he had tested multiple versions and
found them unreliable and re-installed a Slick mag.
See the Cozy archives@ http://www.cozybuilders.org/
Paul
Long EZ 214LP
At 09:22 AM 1/25/2006, you wrote:
>Ron,
>
>I was hoping somebody with PMag experience would answer your thread.
>
>I waiting for the 6 cylinder model to come out and I understand they
>delayed working on that until they felt they had a bullet proof 4 cylinder
>model.
>
>Scott
>
>Ron Brown wrote:
>>
>>
>>I am a EAA Technical Counselor for our EAA chapter. One of our members
>>is building an RV-9 and had planned to use Pmags. I told him that I
>>thought they were still having some reliability problems. Any updates
>>from any of you using the Emag/Pmag?
>>
>>He ran across the below note from Nick Ugolini, a LongEZ flyer.
>>
>>Dear E-MAG,
>>
>>After uneventful three hour cross country flight, my engine quit and
>>would not restart while taxing to the hangar. The Lycoming engine has a
>>Lightspeed Electronic Ignition and a backup P-MAG for ignition.
>>When tracking down the problem, I discovered I had wired both the P-MAG
>>and the Lightspeed to a shared common negative ground point.
>>The ground connection was corroded thus allowing no ships power to flow
>>to either ignition system.
>>
>>After reflecting on my trip, I realized that at some point in the flight
>>the power had simultaneously failed to both ignition systems.
>>I had flown at least two hours completely unaware the P-Mag was my only
>>source of ignition. Unlike the roughness of my previous magneto, the
>>P-MAG causes no change in smoothness or sense of lost power. The engine
>>quit only after the engine rpm was reduced to a point where the P-MAG
>>could no longer supply its own internal power (per design).
>>
>>With absolute certainty, I fully credit your P-MAG for saving my plane
>>and most likely my life.
>>
>>Sincerely,
>>
>>
>>
>>Nick Ugolini
>>
>>
>>
>>------------------------------------------------------------------------
>>
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