RE: ***CUB BROTHERHOOD***
The metal gear HS-645MG will be more than sufficiant for all surfaces on a 1/3 scale Cub. 107 oz-in @ 4.8V and 133oz-in @ 6V are the specs. The one I have on the rudder is a bit of overkill but I had it left over from another project so I used it. I switch props to a smaller one on the water because I need the clearance. The prop is too close to the water with the larger prop, way too much spray. Water is not real friendly to wood or carbon props.
Wild Bill