Hi guys. I don't own a flip 3D, but a friend of mine does. On his maiden landing he landed with a little roughness to it and it snapped the fuse in half. I honestly didn't think he landing hard enough to snap the fuse in half. The approach was level and on touch down the wind caught it and it plopped down sideways somewhat but not hard enough to do the damage that occured. He may have gotten a weak version or the landing could have been a little harder than I thought it was, but either way, it was repaired and flys great now. He has a Saito .91 on his and it flys great.

My Funtana S 90 has HS-5645MG and seem to do very well. They are really strong. 168oz of torque and centers well, atleast mine does for now.

Thought I'd share my experience with the Flip.

Good luck with your flips