Im running a Saito 91 on my showtime 50...I couldnt imagine running the 82. I would think the 82 would power it enough for simple sport flying...if that! I like the 91...im just trying to figure out the right prop. I might say....MAYBE try the 100....but not more than that. The 91 is nice...but not getting 3d Power....just under enough for full on 3D....but very much good enough for this plane.