I agree with you for the most part. but.


1. Most two strokes have a much heavier muffler than necessary, the newer tuned expansion mufflers are much lighter, still large though. Some of the pitts mufflers are lighter as well.

2. The noise problem is workable, but with 98 Db being the usual limit there is not a lot of them below that. Course the hight RPM is partly responsible.

3. They burn more fuel but I disagree that it is a lot, especially with the more powerful four strokes. You would have to fly a lot to pay for the difference, more than I currently fly.

4. With the timing of the ports detuned the two stokes can perform better than the four strokes for the same displacement, supercharged YS engines being the exception. The OS FX 160, large Moki's, and large SuperTigres are an example of this. But still have that large muffler, though a rear exhaust and light weight pipe gets around this somewhat.

5. Maybe in competition and your part of the woods the four strokes are gaining in popularity. It was here too till the economy turned down. Now I see people showing up with two strokes, complaining about the high maintenance of four stokes, maybe but I suspect that they are not making as much and cost is a big factor. I myself make less than I did, and I have to support a wife and three kids.

But other than that it's whatever floats your boat!