Maral,

I've got the Super Stearman with a Magnum 61 RFS. It seems to be a good combination as far as power goes. I agree with djlyon that even more wouldn't hurt but that, of course, depends on your flying style.

I've only flown it 7 times, and the engine mixture has needed a lot of babysitting. After setting the high-speed mixture on the ground for 300-400 RPM rich from peak, about 1/2 way through the flight it would stop coming up to full RPM when I advanced the throttle. I'd have to land, lean the mixture a bit, and take back off again. Each flight has required leaning the high speed needle a bit more. This has gotten a bit better with each flight, but almost cost me the plane on two occasions. I hope these are break-in pains, and will go away after the first gallon of fuel.

I bought a flat battery pack and put it under the fuel tank, and the plane balanced great with no additional weight needed. I did start with a brass "heavy hub" also, but removed it because it wasn't needed.

The plane rolls very slowly - too slowly for my tastes. I saw a modification somewhere in this forum that added ailerons to the top wing. I would love to do that if I could ever find the time.