Spadsriver, I have a G38 reduction on my 1/3 Pup.. and it works well on there. I am not sure you will be thrilled with it on a 1/3 Fokker D7... I am someone that doesn't mind flying slow and scale. But I think you might be a bit underpowered for anything other than flying the pattern..... Keep it as light as possible if you go that route. I hope it works out whatever route you go..have you seen the videos of the 1/3 D7 with the G62 reduction? that has major power to play, and will also slow down and fly scale...