I had one of the original ones back in 1977 or so. I flew it several times, as a trainer (then, we swapped the transmitter back and forth with the instructor). I crashed it when the elevator failed. My problem was that I failed to properly reconnect the clevis to the elevator with the tubing to secure it in place. It popped off during flight, and that was that.

I later (like 25 years later) bought one of the revised versions from Goldberg. It was an ARF. I had an OS 52 Surpass which was plenty of power. But, this engine aircraft combination was a real pain in the butt. The throttle is on the opposite side which meant some interesting linkage connections (for a relative newbie that came back in the hobby after 20+ years) and I had to carve out part of the left side cheek to make room for that linkage.

It flew great, though, with that engine, however, as I said, I was a relative newbie and ended up c1 rashing it doing something that I should not have done.. fly it in winds that were stronger than my capabilities.

After what I experienced with the four stroke, I would not go that way (yeah, I know that's not what you asked, but that was my experience and I wanted to relate that to you just in case you decided to go that way). The engine installation was a pain and there are much better choices.

A good 40 or 46 2 stroke will power that plane nicely. And, it is a very nice looking plane when all is said and done.

Best of luck with that. You will enjoy it, I'm sure.

CGr