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GLOW PLUG REFERENCE LISTING |
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Hot Glow Plugs- for low nitro fuels |
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MFG |
Number / name |
Use |
Remarks |
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Mc Coy |
MC 55- R/C Long |
sport hot |
Similar to K&B 1L |
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Mc Coy |
MC 59 |
sport hot |
low nitro |
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Mc Coy |
MC 14 |
very hot |
heli/ inverted 4-stroke |
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Fireball |
Hot 1.2-3.0V |
sport hot |
red |
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Fireball |
S-20 R/C Long |
sport hot |
1.5-2.0V |
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SonicTronics |
Glow Devil #300 |
sport med-hot |
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Rossi |
R/C Hot, R-1&R-2 |
sport hot |
low nitro |
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Sig |
R/C Long` |
sport hot |
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Enya |
#3 |
Sport hot |
low nitro |
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Thunderbolt |
R/C Long` |
sport med-hot |
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K&B |
1L |
sport hot |
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Fox |
Miracle |
sport hot |
low nitro or 4-stroke |
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Fox |
Standard |
sport hot |
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Fox |
R/C Long (2V) |
sport hot |
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Standard (med) glow plugs-for 10%-15% fuels |
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MFG |
Number / name |
Use |
Remarks |
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Fireball |
Standard 1.2-2V |
standard sport |
yellow |
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Sonic Tronics |
Glow Devil standard |
standard sport |
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Rossi |
Medium and R-3 |
standard sport |
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Enya |
#4 |
standard sport |
med-hot |
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Enya |
#5 |
standard sport |
med-cool |
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Mc Coy |
MC 50 |
all purpose |
sport w/idle bar |
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Mc Coy |
MC 8 |
sport med-cool |
med to high nitro |
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Hangar 9 |
Sport Long |
standard sport |
MC 50 packaged for Hangar 9 |
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Tower |
Performance plug |
standard sport |
w/o idle bar |
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Fox |
R/C Long (1.2-1.5V) |
standard sport |
med-cool |
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Fox |
Gold |
standard sport |
med-cool |
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Cold Glow Plugs-High nitro, 25% and over or racing/ fans |
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MFG |
Number / name |
Use |
Remarks |
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Mc Coy |
MC 9 |
hi-perf |
Ducted Fan / racing / high nitro |
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Fireball |
Cool 1.2-1.5V |
hi-perf |
Blue |
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Enya |
#6 |
hi-perf |
extremely hot engines/high compression/high nitro |
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K&B |
Long & Short |
hi-perf |
cold standard plug |
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K&B |
Hi Perf Nitro Plug |
hi-perf |
high nitro / high perf |
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Rossi |
R/C Cold |
hi-perf |
R-4 & R-5 |
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Rossi |
Extra Cold |
hi-perf |
R-6 & R-7 |
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Sig |
Cool 1.5V |
hi-perf |
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OS |
R-5 |
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Fox |
R/C 1.2V |
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Fox |
#8 |
hi-perf |
high nitro / high perf |
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Four Stroke plugs- hot |
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MFG |
Number / name |
Use |
Remarks |
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Fox |
Miracle |
4-stroke |
2-cyl low nitro or 4-cyl |
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Mc Coy |
MC 14 |
very hot |
heli and inverted 4 strokes |
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OS |
Type F |
4-stroke |
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Sig |
GP-001 |
4-stroke |
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Sonic Tronics |
Glow Devil St 301/302 |
4-stroke |
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Diagnosis or Symptoms: |
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High Nitro = Hot Fuel: needs colder plugs |
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Low Nitro = Cold Fuel: needs hotter plugs |
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High Nitro + High rpm's: needs colder plug ie:ducted fans |
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If engine sags when the battery is disconnected, the plug is too cold or
more nitro is needed |
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If the engine bites back or backfires when hand cranking, the plug is
too hot or less nitro is needed |
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Most HOT plugs can take 2 volts |
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Most COLD plugs can take 1.2 - 1.5 volts |
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Most 4-strokes need very hot plugs or high nitro |
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Note: Mc Coy 4-cycle plugs (not the MC 14) are "Saito Original
Equipment" |
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Hangar 9 plugs are Original Mc Coy plugs packaged for Horizon |
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The above information was shared by: |
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Charles Thacker of Fox manufacturing |
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Mr. McCoy of his own company |
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Hank, the owner of Sonic Tronics |
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Sig Manufacturing |
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This spreadsheet is meant to be guidance only, by no means is it the
finite answer about glow plugs. |
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I put this out on the net in hopes that other R/C fliers may find it
useful. |
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