[h=1]FG-33R3 33cc 3-Cylinder Radial be sufficient for a Platt Zero? (Not shouting, just a result of copying and pasting.)[/h]TIA.

I think it will fly it, but only marginally. I this engine in the Hangar 9 20cc Corsiar and it's ok. Adequate power, could use a little more, but it flies it ok. I love it for the sound.

This Zero should be larger and heavier then the H9 20cc Corsiar, so I would not recommend it. I would get the 60cc Saito Radial.

Thanks DHC, but I think the .60 will be too big for the cowling.