I have never tried to weigh it, I dont have a good scale. I had to add some nose weight with the saito 72 but was able to take some off with the saito 91. The ys is weighs a little more so maybe I can remove all of it when it gets here. I am using a cline regulator with the tank at the cg. I feel this is one of the best rc products I've ever bought. Once setup, which is easy, I have'nt had to touch them. I own two. If you want to keep the plane looking good, put some clear monocoat over the diamonds or they will eventually fall off. I dont do much 3D, dont really know how, but I want enough power to get out of a low torque roll gone bad:-(........Dave