----- Original Message -----
Sent: Wednesday, January 05, 2011 8:32
AM
Subject: [FlyRotary] Re: GM Coil
Comparison
OK Al, I'll tell you my reason for upgrading. My engine has always
had an occasional intermittent misfire, usually on climbout but occasionally
in cruise. It happens infrequently just to one compression cycle and
then it clears up. Obviously, this does not instill confidence with
pax, or myself either. I've tried various solutions, but the problem
persists. I'm hoping the hotter spark from the 585 coils will cure this
annoying problem. I'll report back after installing the new
coils and test flying.
Mark S.
On Wed, Jan 5, 2011 at 12:13 AM, Al Gietzen
<ALVentures@cox.net> wrote:
So I’m still
waiting for an answer to the question I posed a few days back. Do we have
any real evidence that the higher current spark is needed in our
application; or is going to result in any better
performance?
Perhaps it’s
obvious to someone, but I’m wondering whether it comparable to watts/channel
on a stereo. 50 per channel into good speakers is enough to drive you out of
your home; but the salesperson will try to convince you that 1000 watts must
be 10 times better. The D580 certainly makes a very good spark, which
ignites the mixture just fine. Once the arc is made and the fuel
molecules are burning, does 120 ma spark give you anything that a 60 ma
spark doesn’t if the voltage is the same?
Presumably it is just a matter of spark duration.
Save me the need
to do some researchJ
Al