I have a DLE20 on my Deweyville, which is a rather large plane, very long, high wing, big wheels, tricycle gear.  When set with the tail and wing level on the main wheels the 16x8 prop clears the ground by about an inch or so.  When that engine idles the tail shakes quite a bit, but once it throttles up the tail stops shaking.  IIRC the fuse on the Senior is much shorter, so who knows how it would hold up to the idle vibrations of a gasser. Its pretty significant over a 4 stroke glow. <div>
</div><div>I'm looking to put a 3 blade prop on it because I feel the 16X8 will be too fast for the plane. </div>