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For the beginners - how to adjust your model / engine: For optimum performance, the following guide may prove useful: OVERHEATING / HOT WEATHER - Increase combustion chamber volume or head (squish band) clearance - Increase stinger diameter or decrease stinger length (to reduce pipe pressure) - Decrease wheel size. - Improve cooling COOL RUNNING / COLD WEATHER - Decrease combustion chamber volume or head (squish band) clearance - Decrease stinger diameter or increase stinger length - Increase wheel size - Decrease cooling HIGH HUMIDITY - Decrease wheel size
PIPE LENGTH P ipe too short- frequent blowing of glow plugs - Sand blasted head - over heating engine - excessive carbonising of the head - engine sags under load, ie, long climbs - 'Harsh' running Pipe too long - very easy on needle - smooth, quiet running - prone to burbling, rich running - no power - none of above, try shorter and see what happens. Only trial and error will prove which pipe is best suited to your engine requirements.
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