Great!

By the way, I meant to say something in the first post about this, but I forgot. YS engines are known to run hot. That's just their nature, and also a function of the higher nitro percentage. But yours has probably been running lean because you've had the regulator turned way in trying to get it to idle right. Once you get the situation sorted out, I think you'll find it runs a lot cooler. Once I got mine fixed and set right, it started putting out a stream of smoke that almost looks like the plane has a smoke sytem in it. I've thought about trying to lean it up a bit to save fuel, but it's running so good I'm afraid to touch it. Once you get these YS motors right, nothing runs better or has more power.

Funny thing is, the motor cutting out on final is why I came to own this plane and this engine. Another member of my club had bought the plane and motor together, and on the second flight was turning on final when the engine quit. It was too far down wind for him to hear it, and there were other planes in the air, too, so he didn't realize it. He continued his turn and stalled the plane, and it crashed before he could save it. He thought he had simply pulled his throttle stick back when his throttle trim was all the way down (JR radio), and assumed it was his fault. He bought another plane, installed the engine, and then discovered it wouldn't idle. He sold it to a second club member, who messed with it for two or three months with no luck, who then he sold it to me. (I got a steal of a deal!) I have quite a bit of experience with small engines and glow engines, so I figured I could fix it in no time. After I had pulled all my hair out, I called YS. Now I have a sweet running YS 140 sport on a sweet flying 72" QQ Yak-54. Life is good!

David