Well here we Go! Opinions are for everyone! This Plane would fly very nice with a four stroke OS 70! I have the Ninty Magnum in mine. It will fly ultra slow and on a brezzy day you can actually fly it backwards into the wind! I had a 40 LA in it it flew nice. I had a Magnum 52fs in it. It also flew nice. I had the Ninty Magnum fs I had to try it! It's perfect the plane will do anything you want it to!
Check this post out
http://www.rcuniverse.com/forum/m_13...tm.htm#1394294