I had an eaglet 50 with a .15 on it. I thought it was an interesting combo. But it was so lame, that someone at the field actually gave me a .25 to put on it. He just coudn't stand watching me struggle to climb above the trees that surrounded our field. Turns out he was right. The plane was much easier and more fun to fly with the .25. It was a bushing .25 , but had plenty of power. Later, the plane had floats on it for a few years. The .25 came in real handy then.