I just built the Eindecker Arf from SF. I powered it with a ASP(Magnum) FS.61AR 4 stroke. It was very easy and didn't take too much work to get the plane balanced. I took my time in painting the gun and pilot... also painted the cowl aluminum looking silver. I took it to the field today... After taking it out I had a crowed looking a it and saying how great it looked. When i got it in the air it flew Great... Very easy to fly. Taking off was easy just eased up the throttle with a little rudder to keep it staight and it gently lifted off. Landing was easy too... Didn't mind the slower speeds... It's not a 3 d plane but will loop and roll easy... hard to hold a knife edge because of small tail. If you want something that looks older like a war bird... or relic... ( not a scale plane) but easy to fly, I recomend this plane... I loved every second of it and can't wait to get it back to the field.