Yes, I could see early on that it would take an extremely powerful engine to lug this beast into 'unlimited vertical'.

I could tell in the first few minutes of running the FSOne sim that this model is signifigantly underpowered. I really like FSOne as its physics programming seems excellent and I expect it is acurately simulating the effects of the weight and drag of the F-22 Raptor PTS airframe.

But, I am still having fun with it, with the stock motor and the 3-bladed prop, on the sim. In the sim, I put in a 10x7 and I enjoyed a significant performance boost. Not enough to write home about but enough to appreciate.

I then put in an artifical power boost of x10. Ok yes, it flies like a rocket and can go straight up forever - and can do a powerdive so fast the wings can be ripped off. heh. Kinda fun... [&:]

I am at the point now where I can land the sim model safely 10 out 10 tries, in up to 8 mph wind. Landing is the big trick. And its tricky, too. I don't think a bigger engine with more power helps on the landings. heh.

Alright, alright, I'll look into the Evo .55 and /or .61... twist my arm... What's another c-note for a nice plane like this?