I built one a while ago, and only recently flew it. Unfortunately, I built it with the tail misaligned and a badly warped wing. What can I say? I was about 12 when I built it Even though I built it badly, it still flew okay. Used a K&B .20 Sportster engine (HEAVY), and it had plenty of speed. The K&B 20 is actually larger than my OS.25 FP I'll be putting in another one, so something larger may fit, but it doesn't really need the power. You can forget about a grass field on the suggested wheel size. I had to go to 2" or larger tires to keep it from flopping on its nose during takeoff. I don't know what the actual weight was, but with 4 channel standard radio gear and an overweight .20 engine, it still had no trouble getting airborne. Good luck, and take your time getting everything aligned properly.

Silent J[sm=thumbup.gif]