I have had 2 different 4 star 60's and they both flew great. The first was an ARF that started out with a Thunder Tiger 61 on it. It flew alright with this engine but I wanted more power so it got a GWS 75 on it. This engine was great and really pulled the plane vertical. The second 4* was a kit built plane that was given to me by a friend. It had a Magnum 91 4 stroke on it and was very nice to fly. I switched the magnum and put a Thunder tiger 91 4 stroke on it and this engine made the plane come to life. I have since passed these planes on to some friends but now I have a 4 star 40 that was given to me by a fellow club member that I will be keeping for a long time. 4 Stars are great flying planes!!!

Rick