O.S. Glow Plug Selection Guide

Posted: May 6, 2011 in glow plugs, O.S. Engines
Tags: , ,

via O.S. Glow Plugs:

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.

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.

How to Choose the Right Glow Plug


#6
Hot
OSMG2690
A long-lasting plug for most .10-.60 2-strokes
P3
Ultra Hot
OSMG2699
For 21VZ-B V-Spec and most .18-.28 off-road racing Turbo head engines
P4
Super Hot
OSMG2697
For 21VZ-B V-Spec and most .18-.28 off-road racing Turbo head engines
P5
Very Hot
OSMG2711
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
LC3
Hot
OSMG2700
Long reach, for 1/10 scale off-road engines such as O.S. 21TMs and Traxxas® peak needle settings and punchy throttle response
#7
Medium Hot
OSMG2713
For 2-stroke airplane, helicopter and car (except Turbo head) engines. Offers stable idling, broad peak needle settings and punchy throttle response
RP6
Medium
OSMG2703
For most .12-.21 on-road racing Turbo head engines
LC4
Medium
OSMG2708
Long reach, for 1/10 scale off-road engines such as O.S. 21TMs and the Traxxas TRX2.5 & 3.3™ engines
#8
Medium
OSMG2691
A favorite for most 2-stroke engines
RP7
Cold
OSMG2704
For most .12-.21 on-road racing Turbo head engines
RP8
Cold
OSMG2715
Outlast the hottest heats with Turbo head engines
#10
Cold
OSMG2693
Ideal for aircraft engines .60-size and up
R5
Cold
OSMG2694
For leaner needle settings and high-nitro/high-rpm scale racing
F
4-Stroke
OSMG2692
Long reach and long life for 4-stroke engines
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