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General control line discussion => Open Forum => Topic started by: Paul Taylor on March 02, 2006, 07:10:54 AM

Title: Cox .049 needle setting?
Post by: Paul Taylor on March 02, 2006, 07:10:54 AM

I think I have been setting the needles wrong on Cox engines.
I start them up and then turn the needle until the engine is at it's highest RPM. Then let it go. Should I not back it off a few clicks?

What is the best way?

Thanks

Title: Re: Cox .049 needle setting?
Post by: Phil Coopy on March 02, 2006, 10:32:58 AM

Back the needle off about 1/8 of a turn from highest RPM unless you are racing and wanna buy a lot of engines.

Title: Re: Cox .049 needle setting?
Post by: john e. holliday on March 03, 2006, 08:56:35 PM

The only way I can get a decent needle on them 1/2A's is trial and error.  The best setting is when the engine runs a slightly rich two stroke and leans out for the last couple of laps.  DOC Holliday