Good to hear from you NOSRAM. It's been a while since I've heard from you on this thread. You must be busy cutting down your rudder and relocating your tank too.

Well, to answer your question, I replaced my OS .91 2 stroke with a Saito 150 4 stroke. Not that the OS was underpowered or anything but I had the Saito 150 laying around and figured more power would even be better. Well I was right and really liked the limitless and rocket like vertical. Obviously, I have to fly it most of the time throttled down (it darn near hovers at idle).

Now to all you people who will undoubtedly read this thread and want to reply with something like "the UCD doesn't need that much power" or "the UCD isn't designed for that big of motor" or "the airframe won't take the stress" or "it will be way too nose heavy with that motor" or "it will fly like a brick with that motor" or whatever you're thinking PLEASE don't reply telling me how ignorant or stupid I am. This plane flies great with a 150 and still floats on landing. I just don't want to hear your negative comments. Be adventurous and try something radical like NOSRAM is doing. I hear he is converting his UCD to use a gasoline motor, adding a smoke system, clipping the two outside ribs off the main wings, installing 5" main wheels, and adding some bomb drops. Personally, I can't wait to see it fly after he makes those conversions.