lee1010,

I have just about fully made the transition from glow to gas. I think a [link=http://www.scottellingson.com/]Brillelli[/link] 26cc swinging an APC 17X6 prop at 8400 rpm would be just fine for the Cermark Pitts. I'm running a [link=http://www.scottellingson.com/]Brillelli[/link] 26cc on a GSP Giles 202 140 at 12.5 + lbs and if flys fine. It wont 3D at that weight but it fly fine other wise. I guess the equivalent to the 26cc would be like a 150-180 4 stroke. I fly mine with an FM radio but I'm going to a PCM, using FM is fine with the proper setup. The pros for gas are cheaper fuel, no batteries to lug around for a starter, no glow igniter, more reliable and last longer, and virtually no clean-up. One more thing, you can't beat the sound of a gasser . These little gassers run very smooth and maybe smoother than most glow of equal size and are easy to maintain and operate. It made a believer out of me.