RE: YS FZ70S vs SAITO 72 AAC
Oh, I thought O.S. 72FS-a, Saito 72 AAC, YS FZ70S, Thunder Tiger F-75S and Magnum XL70 RFS these engines are almost same. But now I understand why YS FZ70S is so expensive because it has more power. I’m looking for 4S engines instead of 2S .46 to .61 class engine for sports and 3D flying.