RE: How come that..........
While it irritates me too, especially because I want to turbine power my 1/4.5 scale Me-163... I can understand why the AMA has an issue with turbines.
Just look at the crashes. How often do you see a fire break out from a ducted fan or standard glow powered crash?
Not to mention the speed turbines have over even the best ducted fan aircraft at this time.
Insurance is expensive, and there are a lot of eyes on the flying RC world now due to some weirdo's at Fox... and the AMA is stuck in the middle.