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Listers,
I got my shiny new P-Mag installed last week and
the first flight was wonderful.
The second flight, yesterday, was more like
Clark's. The P-Mag reset it's timing in flight resulting in a nearly total
power loss when running on that ignition alone. I had been running on each
ignition alternately trying to compare timing.
I just got off the phone with Brad Dement at
E-Mag. He said that they'd become aware of the problem only about a week
ago. What happens is that the unit "forgets" the timing that is
established by the quick setup method and reverts to it's base timing. He
offered me three solutions to the problem - firmware, software or
setup.
I'll send the unit back for the most reliable
fix.
Mark Ravinski
N360KB 1396 hrs
----- Original Message -----
Sent: Thursday, December 07, 2006 2:05
PM
Subject: [LML] High Ignition Advance
Problem
On the 2nd leg of a long cross country trip, I noticed that CHTs were
running noticeably higher than usual on climb out. After leveling off at
6,500msl, CHTs were uniformly running approximately 40+ degrees higher than
normal. Upon landing, the problem was eventually traced to one of my
PMag ignitions that, was going to full advance at idle (39degrees). This
was a failure mode of electronic ignitions that I hadn't considered
before. Given the engine seemed to be running fine otherwise, I didn't
try switching off one ignition in flight, which likely would have pinpointed
the problem.
Regards,
Clark Baker
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