RE: AP engines
LeeMRC- what size were you looking at.... is there a plane in mind for the motor? The reason I liked the AP was the rear muffler, but that don't come on the .061 . And I hear the .09 is weak for hard flying in a .10 plane, but looks great inside a cowl. I had a .15 sized Texan that the AP 15 fit tottally inside the cowl, just a small hole for the igniter, an exhaust tube, & some cooling outlet slit. If you are looking at the smaller guys, I'd go with the Norvel 074 over the AP unless you really like the rear muffler more than power.