RE: Smallest gas engine
One of the guys I fly with picked up a 15cc, it has been bench run but not in a plane yet. I think he picked it up from Hobby King when he ordered a couple of the DLE 20s. It's been a few weeks sense we spoke about it but I recall everyone was impressed with the RPM he got with the prop being used. If you need any info on it I can email him and ask.