I seen a new Ryobi 30cc engine at Home Depot. It is not like the 31cc at all, but looks more like a Homelite. I think it was on a string trimmer. There was another version with a very compac electric starter on it. That may be great for some airplanes or air boats! You know the ones that other stuff is in the way for hand held starters. Capt,n

the 30cc ones are homie 30's, have been around for a little while

haven't seen the electric start ones

What I did like about the 30cc Ryobi....is the carb looks like it may work better than the older ones. I could be wrong on that! Also the engine looks real easy to mount or work on! Cap,t