OK, four strokes don't like landing on the rocker cover. However, the one in the photo spent four months buried up the to firewall in a creek bed over the winter and was flying again a week after being found. I've destroyed two 4*60's, two home brew's and a trainer and had several other really hard landings destroying spinners and props. All on four strokes. The only damages to engines was a broken carb mount on a O.S 52 and on a Mag 91. And then the O.S. 52 in the photo. It was the same one that had the carb mount on the back plate broken and later spent the winter in the creek bed. That one came down like a hatchet. The handle was the right wing tip hitting first followed by the rocker cover. The gyser of yellow monokote was awsome. I'm not sure a 2 stroke would have come out any better.

Don