.15 engines
I would recommend the OS 15 CV-A. Though it's a bit pricey, it is of typically great OS quality and has a much better carb then the Norvel so dead sticks and other reliability problems are not as bad. I also have a Norvel AME .15, and it is a monster in the power department, but the goofy muffler attachment and 'here nor there' carb have put this engine in mothballs. I usually run 8x4 APC's for all around use, 7x6's when I just want to scream...