steve(at)tomasara.com
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 Posted: Sun Sep 14, 2008 3:10 pm Post subject: P-Mag and E-Mag safety info from canard-aviators list... |
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What follows is some critical safety information published by others
with a request to please distribute. From my experiences on the
canard-aviators listed I believe Marc Z. to be a particularly credible
source. My exposure to the other two authors is too limited to have an
informed opinion.
Steve Stearns
Boulder/Longmont, Colorado
CSA,EAA,IAC,AOPA,PE,ARRL,BARC (but ignorant none-the-less)
Restoring (since 1/07): N45FC O235 Longeze Cothern/Friling CF1 (~1000 Hrs)
Flying (since 9/86): N43732 A65 Taylorcraft BC12D
********** Messages from the Canard-aviators list follow ************
5.
Emagair Emag/Pmag Electronic Ignition warning - Part 1
Posted by: "Marc J. Zeitlin" marc_zeitlin(at)alum.mit.edu zeitlinm
Sun Sep 14, 2008 5:14 am (PDT)
Folks:
While I had planned on writing a description and warning of the issues
that I had on my trip east in July/August with my electronic ignitions
from Emagair (Pmag/Emag), the message that was forwarded to the
canard-aviators list by Ric Lee, With a write-up by Gary Cotner
describing his crash of his Thorp T-18 due to Emag/Pmag failures has
prompted me to accelerate the writing of this warning. So here it is.
History (short - a search of the COZY mailing list archives will turn
up all my previous posts on this subject):
In August of 2004 I purchased a Pmag from Emagair to replace one of my
magnetos. During operation over the next months, I had numerous
issues with intermittent missing. Brad and Tom at Emagair were
extremely good at customer service and replaced my units numerous
times whenever I had an issue. Obviously, I was not happy about the
problems, but I truly wanted them to succeed - the idea for the units
is a great one. By the summer of 2005, after having problems with a
unit during my Instrument Instruction, and further problems with
replacement units, I threw in the towel, sent the unit back, and got a
refund. While replacing the unit with a rebuilt magneto with Ken
Miller, we discovered some anomalous wear on the Emagair soft drive
gear - Ken was very concerned about this, and I'll get to that issue
later.
Fast forward to February, 2007. I figured they had had more than
enough time (1.5 years) to fix any issues that they had, so I wanted
to give Emagair another try. I know that many of you thought that I
was insane, and given the rest of this story, you may have very well
been correct. But I wanted them to succeed and put Slick/Bendix out
of business... At any rate, I got a new generation 3 unit (version
113) and installed it. Within the first month, I had issues with
mis-timing, and worked with Emagair to replace the unit. After
problems with a second unit, I had been able to run for over a year
and 120 hours with no issues whatsoever on the third version 113 unit
that I had installed in the spring of 2007. I finally felt like they
had the issues licked.
After having a magneto failure (reported on list) back in early June
of this year (2008), I decided that since I had been having good luck
with the Pmag, that I'd get an Emag to go along with it to replace the
magneto that had failed. Emagair offered to upgrade my existing Pmag
from the version 113 that I had to a version 114 at the same time that
they were sending me a new version 114 Emag. Hey - something for
nothing - take it, right?
I installed both units and flew locally for about 10 hours, taking
friends for rides, going places for lunch, etc. No problems at all -
engine was running like a top.
To Be Continued....
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