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• Standerd Type
Glow Plug •
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How Glowplug
Ignition Works
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With a glowplug engine, ignition is initiated
by the application of a 1.5-volt power source. When the battery
is disconnected, the heat retained within the engine's combusion
chamber remains sufficient to keep the engine running. Ignition
timing is 'automatic': At higher rpm, the plug becomes hitter
and, appropriately, fires the fuel/air charge earlier; at reduced
rpm, the filament becames cooler and ignition is retarded.
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Particuarly in the case of very high performance
engines, glowplugs have to be regarded as consumable items. However,
plug life can be lengthened and performance maintained as follows:
•Fit a plug suitable
for the engine.
•Use fuel containing
a moderate percentage of nitromethane unless essential for contest
use.
•Do not run the engine
lean, or leave the plug connected while adjusting the needle-valve.
•Use a fuel containing
as low nitro as possible.
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When to replace
the Glowplug
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Apart from when actually burned out, a plug may
need to be replaced because it no longer delivers its best performance,
such as when:
•Filament coil has became
distorted.
•Filament surface has
roughened while.
•Foreign
matter had adhered to filament or plug body has corroded.
•Engine
tends to cut out when idling.
•Starting qualities deteriorate.
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How to select
a suitable glowplug in each category.
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| Type A3 |
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For
R/C Aircraft
Running-in, Engines smaller
than .32 capacity
Engine types: 25SF, 25FX, 10-40LA
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For R/C Helicopter
Running-in, Smaller than
.32 capacity engines (for beginners)
Engine types: 32SX-H
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For R/C Cars
Running-in,For beginners
(rich needle setting)
Engine types: 12/15CV and 15LD |
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| Type No.8 |
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For
R/C Aircraft
General purpose
Engine types: Most O.S. engines
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For R/C Helicopter
General purpose
Engine types: Most O.S. engines
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For R/C Cars
General use, 1/8 Off-road
racing
Engine types: 12/15CV, 15LD, 21RG and 21RZ-V 01b |
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| Type A5 |
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For R/C Aircraft
Larger than .60 capacity
engines
Engine types: 61/91FX, 65LA,140RX, 160FX,BX-1,
and BGX-1
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For R/C Helicopter
With higher nitro fuel,
to reduce overheating
Engine types: All O.S. helicopter engines
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For R/C Cars
1/8 Off-road racing, 1/10
Circuit racing, 12 class GP touring racing
Engine types: 21RG, 21RZ-V01b, 12/15CV and 15LD,
12TR |
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| Type R5 |
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For
R/C Cars
1/10 and 1/8 Circuit racing
Engine types: 15RX and 21RZ-R |
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| Type F |
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Engine types: All Four-stroke engines
Engine types: 140RX-FI·
160FX-FI·49PI |
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