need help setting engine - RC Groups
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Sep 16, 2005, 02:34 AM
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MoD_Eagle's Avatar

need help setting engine

I am very new at RC and have a question about my os .46fx I understand the needle valve settings but then there is the adjustment screw right inside the throttle/carborator. I don't know what it does or how to use it.
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Sep 16, 2005, 03:15 AM
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That's the slow-running adjustment. To check if you need to change its setting, start the engine and get it running nicely by adjusting the main needle (if you haven't already done so). Then open the throttle quickly from idle to full and observe what happens. If the engine speeds up smoothly without hesitation, no adjustment is needed; if the engine sounds like it's choking, and then dies, the slow-running needs to be leaned-off a bit; if the engine just dies without choking (no smoke), the slow-running needs to be opened up a bit.

Make only very small adjustments, as the idle needle is very sensitive. Turning it clockwise will lean it, and anti-clockwise will open it.
Sep 17, 2005, 02:09 AM
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MoD_Eagle's Avatar
hey, thanks man, I appreciate you helping me.
Sep 17, 2005, 08:58 AM
God is good
Viper Pilot's Avatar
Originally Posted by abenn
That's the slow-running adjustment. . . .
ALso called the "idle valve".

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