RE: Help me choose a .15 engine
The Magnum 15 I have has been easy to break-in, start and tune. Great idle and transition. Not so easy to get shut off, fuel tubing on the main needle cured that. 30% fuel gives 14,800 rpm with an APC 8x4. I have about 80 flights on mine now. It is the only 15 I have run.
It works well for me, MikeB