ORIGINAL: NM2K

The Tower Hobbies .46 and the Super Tigre GS-40 are about the same size and weight. Power wise, I doubt that there is much difference. The ST GS-40 is a pretty hot engine after a rich break-in of several tanks of fuel. Both are great engines and both will pull your Cub around at more than scale speed, so don't be afraid to throttle back a bit. Your flight will last longer and you won't be beating up your model as much with the increased aerodynamic pressure that full throttle operation imparts.

Ed Cregger