ORIGINAL: GPSpacewalker
I would not be too sure that in a matter of a few years you will see 4 stroke gas motors take over in the 50cc+ area. I not saying that it could not happen, I am saying that I doubt it.
FIve years ago, when I goined this hobby, hardly no one at my club had a 4 stroke. 4 strokes were only for the dedicated scale builder only.
Now, five years on, the reverse is becoming true.