The Great Planes .40 (54" wing) Ugly Stick! I went through a lot of teeth cutting with 4. Honest bad batteries on 3 and a spectacular DUMB THUMB showing off at a crowded Saturday at our paved field. O.S. .46 Max, clipped wings, no dihedral, same area but modified empennage to loose the WWI thing. 3 to 4 feet off pavement upside down. Feeling my oats! pulled back on elevator and nothing left to pick up, just sweep. Time for a bugle, shovel & volley. I just love the kit. Taught me to hover, land on a table and my jaws still hurt 18 years later from grinning.