I posted a while back when I started to have problems with my evo trainer engine, it just started to die while attempting touch and go's. It seems that the bottom end was a little lean, making it richer solved that problem. Now it seems like it won't rev out well in the air. It reaches a nice smooth high rpm on the ground but when I go to take off and fly it doesn't rev out well. If I put it into a dive with full throttle it revs out nice and stays until I back off. When I level it out and reduce throttle then try to go back to full throttle it won't rev out again. The high end needle seems to be set right. I did the pinch test and the rpms increased slightly before dying. Any suggestions would be greatly appreciated. I don't really want to dump my plane because of engine problems.

Thanks

Jeremiah

P.S. It is mounted on a H9 Arrow.

G'day Jeremiah,
I disagree with using the pinch test at full throttle, I suggest using it only for idle mixture adjustments, to check you high speed mixture, run engine up to full speed, & lift the plane so the nose is pointing at least up at 60 degree angle, & listen to the engine, if it slows down, & begins to die, it is too LEAN, if it picks up some speed, & keeps going strong, it is set perfectly.
A very common mistake, lots of pilots make, is to have the engine at peak revs, on the ground, this is almost always, too LEAN, & as soon as the plane takes off & the engine unloads, it slows down & usually stops. As the engine unloads, it needs more fuel to sustain the higher revs, too rich is better than too lean, so try the nose up test, & check your tuning, you may be surprised.

Will do, thanks for the help.