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Engine
Topics
Accessories |
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The
Magneto Ignition System
By John Schwaner, Sacramento Sky Ranch
98 pages
$10.95
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The
magneto and ignition system as used on Lycoming
and Continental engines. A clear and concise description
with lots of photos and drawings of how your mags
work, what maintenance they require, and typical
failure modes to watch for. This is the first
book I've found that actually made me comfortable
and confident working with my airplane's "mysterious"
ignition system. I guarantee, that's saying a
lot.
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From
the introduction:
Magnetos are reliable
and provide a redundant safety factor, but they
have the potential of causing engine failure if
they are not inspected and serviced. When the Magneto
bearings fail on one magneto, the rotor seizes causing
the gear teeth inside the engine to break. The broken
gear uncouples both mags causing instant engine
shutdown. worn inpulse coupling rivets can cause
engine failure when the impulse coupling engages
in flight. The adage "if it's not broke - don't
fix it" translates to "operate it until
it fails and hope it doesn't take the engine when
it does".
These are tough words
to start a book. When we open up magnetos for overhaul
we see that many are not receiving proper preventative
maintenance. With an understanding of the
magneto's mechanical and energy design you have
the knowledge to make the correct maintenance decisions
so that your magnetos operate safely and reliably.
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Table
of Contents
Introduction
3
the magneto
6
the magneto coil
7
the magneto rotor
14
the magneto capacitor
16
the ignition lead
20
testing the ignition lead
22
"E" gap
23
the "P" lead
25
how much voltage is required
27
how much energy is required
29
how altitude affects magnetos
32
how temperature affects magnetos
36
the impulse coupling
37
inspecting the Bendix impulse coupling 42
installation tip for Bendix impulse coupl. 44
the retard breaker magneto
45
retard breaker circuit design
48
the magneto check
51
magneto induced engine roughness
52
magneto wave form interpretation
56
bumping magneto timing
57
Bendix S-20/S-200 rotor bearings
59
Bendix S-20/S-200 bearing grease
61
moisture drains on Bendix s-1200 magnetos 63
Bendix breaker cam lubrication
64
Bendix distributor block lubrication 65
replacing distributor felt Bendix magnetos 66
coating the s-20/200 distributor block
66
magneto oil contamination
67
checking the ignition filter
69
the D-2000/3000 dual magneto
71
timing the magneto to the engine
72
ignition system EMI
74
electrical bonding
83
storing magneto rotors
85
Slick magneto supersedure listing
85
data plate information
86
Bendix service bulletins
87
Slick service bulletins
91
which magneto is best
92 |
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