I have an OS 70 Surpass on mine. Its plenty of power for this plane & balanced perfectly without adding any weight. Bend the tail wheel towards the fuse a bit, helps the nosing over tendency. You still need to hold up elevator when taxing though. I don't know what type of covering they use on this plane but I've had to use the iron on it several times because the covering keeps coming loose. Its a very nice flying plane with no bad habits. Get the red/orange version Its easier to see on a cloudy day.