weight to engine ratio
 

Pardon my ignorance if this is out there somewhere in information space but I can’t find it. Is there anyone or anywhere that can list engine size to airplane weight? For example I would like to know just for knowledge sake the following

5lbs – 7lbs airplanes = .40 - .46 2 stroke or 52 – 72 4 stroke
8lbs – 10lbs airplane = .60 – 91 2 stroke or etcetera….
“””” ‘””””””””” “””””””” ‘ ‘”””””””””
“”””””””c ‘’’’’’’’’’ “”””””””” ‘’””””””””

Thx
Joey V.

RE: weight to engine ratio
 

In general, that's a loaded question. :) For instance, a Cub can get by with a lot less power-to-weight (which I think is a more meaningful comparison, by the way) than a plane meant to be a 3D monster. For what it's worth, the numbers you listed are probably pretty close for a sport ship....maybe a bit on the anemic side, but plenty enough for flying.

Erik