Evolution cold running poorly - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-21-2004, 08:16 PM   #11
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I think you are referring to what is called the needle seat

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Old 12-22-2004, 09:52 AM   #12
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I prefer to call those types of parts the "thingy that fits on the other thingy, you know, on the carb?" Where's a Clarica Agent when you need one!
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Old 12-23-2004, 09:03 AM   #13
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Had a puzzler one time. New engine would run rich with the needle valve turned all the way in to the stop. Turned out the threads on the needle valve were hitting bottom before the needle was seated. Ground about 1/8 in off the threads and it was fine. Never know what your going to find.
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Old 12-23-2004, 09:50 AM   #14
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I ran the engine yesterday with the needle seat installed and it runs great. I can even hand start it from a deep cold. Very pleased with this engine now. I only paid $40 bucks for it as it was in the box when I got it and unless I see it run I always assume its a paper weight until I can get it to run so I buy used engines with that in mind.
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Old 12-27-2004, 07:55 PM   #15
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One of the guys we fly with had the same motor, and the same problem. After playing with it, he replaced the motor and sent it back to Illinois to the dealer. After about 3 weeks, it came back , new nedle vave, new rings and piston just like a brand new one. I was not impressed with the motor, as I was trying to teach him how to fly.After he got it back from the dealer in brand new condition, and at NO CHARGE, we tried it out. When we tried it, it started on the third flip by hand, and ran around 11500 RPM. It is now in another plane, as it is completely satisfactory now the way it runs.... As a side note, this motor had been crashed too and disassembled to clean, and I do beleave that the same part was misplaced when it was reasembled. I don't know what the part looks like as we never did see it. Anyway, at Toledo, the dealer said that you can take the rear mounted needlevalve from the back and it will fit into the carb fitting , and it will work just fine.......... Have a great Holiday.......
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Old 12-27-2004, 09:21 PM   #16
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Thanks Plowboy,

I have this engine running about as good as any engine can now. I put the needle seat in and the engine starts by hand with one flip back against compression by snapping the spinner with my fingers. This thing runs great so far, I haven't actually flown with it yet. That is going to happen tomorrow hopefully.
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