alright have one on the way from tower, so this is going to be my first bipe, 2nd kit to put together first kit was a 4*40 also flying a gp supersportster mrkII which i love to fly, i have read the threads on this kit and seems to be a four stroke is the choice to power this thing but i am not sure about the funds for a engine that size i was thinking about a os61 fx so if anyone is flying one with that setup let me know how it flys, guess i should say all i want is to do some loops and rolls but nothing major i just had to have a bipe, always loved the way they look so if anyone is using a 61 let me know how it powers the plane thanks i will post pics soon on the building thanks again mike