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I see everyone taking
about Lightspeed and no one has mentioned E-mag...I have one in
my Glasair and it has been just great and no problems so far...Hot
starts have been easier than before, runs smoother and burning less gas at
10,000' than before, not a lot less, but less....My opinion
Michael
Giardino
n66mg flying
n7sz L-IV 95%
No
flywheel on a TSIO-550. Alternative is to use tape marks at the base of
the spinner and use extension of the case split line as the fixed point.
Worked fairly well for us.
John
Barrett
From: Lancair Mailing
List [mailto:lml@lancaironline.net] On Behalf Of randy
snarr
Sent: Friday, December 30, 2011 9:07 AM
To:
lml@lancaironline.net
Subject: [LML] Re: Lightspeed
Ignition
When
running a mag and the Light Speed EI they recommend the timing be set on the
mag with a timing light as they do for their unit as well. If the shop set the
mag timing with a buzz box that could have changed it. I run the same
set up. I get almost no drop in rpm when the mag is shut off. This is due to
the fact that the mag mostly sparks in the shadow of the longer hotter
sparking electronic ignition. It is my understanding that the Electronic
Ignition is doing 90% of the firing of the gases in the
cyl.
I
would retime both the EI and the mag and see what you get. I have the hall
effect module and you use a simple automotive timing light with marks on the
fly wheel.
It is
pretty easy to do..
"Flight by machines heavier than air is unpractical and
insignificant, if not utterly impossible"
-Simon Newcomb, 1902
From: Gary
Casey <casey.gary@yahoo.com>
To: lml@lancaironline.net
Sent: Thursday, December 29, 2011 2:10 PM
Subject: [LML]
Re: Lightspeed Ignition
I'm sure the
most common cause for this is a change in ignition timing. I assume the
mechanic left the Lightspeed system alone, but did the normal routine of
resetting the timing of the mag. If the two timings are exactly the same
you will likely get the same drop on each, or maybe a little less drop on the
Lightspeed. I've observed that most annuals include resetting the
timing, but rarely will the mechanic state what it was before the change,
which would be very useful information. I'll bet he advanced the timing
of the mag by maybe 2 degrees. Just a guess
:-)
Um
– er - (headscratch) – fellow LMLer’s – since the annual performed by
maintenance outfit (not necessarily significant) I notice I get a drop around
80 RPM on the Lightspeed ignition during run-up, whereas before it was barely
noticeable.
Been
wondering why. Changed my iridium plugs two days ago just as a starting point
but no difference.
So
thought I would ask the experts herein.
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