I ran 44+ gal. (cool power heli. 30 percent) of fuel through my dz 160 before a ring and piston replacement was required. My prop of choice is a bolly 18x12 cut down to 17.5x12 rounded tips, insane verticle and it slows in the down line because the prop is wider than the standard bolly 17.5x12. Noise is an issue but I have been playing with the tip shape to get better results. 8000 rpms in most weather conditions seem to be the norm. Hatori short pipe and header. hyde ar70


gary