PS. The video on this page shows the wankle flying an almost 4 lb plane. I just finished highly modifying the plane last week (cut the nose shorter, new tail, removed a bunch of plywood where I thought I would add floats (won't ever happen) and the plane is now 3 lbs 2 oz. No photos of the mods yet.

http://www.airfieldmodels.com/galler...k_30/index.htm

The video sucks but you can see this engine is not hurting for power.