the seagull p47 is a good model for my FG19R3 saito radial engine. the model weighs 9.5 lbs and as it ends up the wee little 19 cc flys this p47 just fine! the 19 cc radial is rated at just shy of 2 hp. where as a 20 cc DLE makes over 2.5 hp. i decided that the hangar 9 20cc p47 is too big and heavy of a model for the wee little radial. eventually i would like to mate the FG19 to my topflite .60 gold corsair but for now it is great fun in this P47! =D