RE: My Cub flies way too fast!
Hi!
There are two ways!
Put on a larger prop with less pitch! Like a 13x4 or 14x4. Second lighten the plane. Light planes fly slower!
But...first I must say that there is no problem using whatever engine on that CUB and still landing it in as low way!
Have you checked the idle rpm? It should be around 2000rpm. The thing is to slow the plane down, and this you do with using a larger diameter prop with not too much pitch (4").