I am getting back in to flying after 8 years. All though I have flown alot and always used 2 strokes. I took my first two stroke apart and rebuilt it at the age of 7. I am very comportable with them. I have never touched a 4 stroke. It seems like they are really better for the sport flyer and to start learning 3d.

my question is?..is the transition hard. how much diff. is there in the every ay use? Where can I learn more about them?