http://www.osengines.com/accys/glowplugs.html
If you are using O.S. Engines, or perhaps these are the only glow plugs available at your local hobby shop, here’s a selection guide that you should look at. Don’t simply buy the LC3 plugs for your .21 engine like they tell you so. An LC4 plug is good for overall response and rev band for offroad bashing. But if you plan to race… use a No. 8 or R5 for cooler temps and higher revving band.
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Tough Enough to Take the Heat™.Getting the best engine performance means choosing the right glow plug, which depends on a number of different factors – the engine type, air–fuel mix, nitro percentage, and even air temperature. What’s more, the right glow plug will change as conditions change. Keeping a range of glow plugs on hand will help you fine–tune glow heat and enjoy maximum performance under all conditions. Generally, hot plugs provide better idle and acceleration than cold plugs. Cold plugs will produce more power but may idle more roughly and be harder to tune. |
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#6
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Hot
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OSMG2690
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A long-lasting plug for most .10-.60 2-strokes |
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P3
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Ultra Hot
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OSMG2699
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For 21VZ-B V-Spec and most .18-.28 off-road racing Turbo head engines |
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P4
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Super Hot
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OSMG2697
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For 21VZ-B V-Spec and most .18-.28 off-road racing Turbo head engines |
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P5
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Very Hot
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OSMG2711
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For 21VZ-B V-Spec and most .18-.28 off-road racing Turbo head engines, especially when the temperature is high or for leaner needle settings and high-nitro/high-rpm running |
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LC3
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Hot
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OSMG2700
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Long reach, for 1/10 scale off-road engines such as O.S. 21TMs and Traxxas® peak needle settings and punchy throttle response |
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#7
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Medium Hot
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OSMG2713
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For 2-stroke airplane, helicopter and car (except Turbo head) engines. Offers stable idling, broad peak needle settings and punchy throttle response |
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RP6
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Medium
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OSMG2703
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For most .12-.21 on-road racing Turbo head engines |
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LC4
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Medium
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OSMG2708
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Long reach, for 1/10 scale off-road engines such as O.S. 21TMs and the Traxxas TRX2.5 & 3.3™ engines |
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#8
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Medium
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OSMG2691
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A favorite for most 2-stroke engines |
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RP7
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Cold
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OSMG2704
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For most .12-.21 on-road racing Turbo head engines |
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RP8
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Cold
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OSMG2715
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Outlast the hottest heats with Turbo head engines |
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#10
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Cold
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OSMG2693
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Ideal for aircraft engines .60-size and up |
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R5
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Cold
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OSMG2694
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For leaner needle settings and high-nitro/high-rpm scale racing |
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F
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4-Stroke
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OSMG2692
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Long reach and long life for 4-stroke engines |
Brushless & Nitro RC Cars Trucks | HPI | Traxxas 