Okay, it sounds like your getting close. heres the deal. You may still have a smooth transition but your setting s can stil be way off but we'll get to that in a while.

Factory settings! Don't need them and don't ever worry about getting things all fouled up and want to revert back to them. If you do want to start all over again, then do this. Find a quiet area with no noise (home). Open your high end about 3 turns and close your low end completely.

Now, remove the fuel line and attach a separate piece of fuel line to the carb, maybe around 5 ish inches long. Okay, at the same time, blow into the tube and open the low end needle until you hear a hissing noise. Congratulations, your low end is now in the ballpark and should be good enough to get it started up.

Start it up, generally, the high end needle is a no brainer, its the low end that causes all the problems. Once you understand the low end, you will have a nice RC career.

So start this thing up and dial it in as best you can. Low end/high end, get it where you "think" its good. Now how do you know the adjustments you made had an effect ? Smooth transition maybe but like I said earlier, it can still be way off.

Remember every time you make and adjustment on the low end, you need to check the high. You kind of bounce back and forth until it comes together.

So now you think yo have it and lets see if you do. Let the engine idle, while the engine is at an idle, carefully remove the fuel line from the carb and let the engine quit, if you cannot safely do this , thentake a pair of pliers and pinch the line until the engine quits.

Listen to the rpms as the engine quits, (this is very important), if the rpms increase a bit as the engine quits, your low end is too rich, this lean it a bit (1/turn at most). If the rpms just go down and quit, low end is too lean. I set all my engines for a very slight increase.

Also remember again each time to adjust that low end, check the high. There is absolutely no reason you cannot have a perfectly tuned engine and this is not a difficult task.

I reset mine at the beginning of each season due to temperatures and such and i do not have to reset my low end again for several months. It usually takes a couple tank fulls of fuel to get this done. This is a very easy thing to master. I have not had an engine fail on me in years due to tuning. Also with a perfectly tune engine, if something goes wrong, one thing for sue is that an out of adjustement engine is last on my list of things to look for. I know the engine is tune just fine so I look for other problems.

You will also find pilots who constsantly fool with their settings. this gives off the impression they know what they're doing, they don't and stay away from them.


As far as checking the high end, that tipping the plane up is pretty good. There is also a pinch method use for the high end, I rarely use it because most of my engines are enclosed. Basically, you run the engine full throttle, give the fuel line a quick pinch/release. Some look for a sligh tincrease in rpms and then back to normal, I go for no change.

Good luck