Thanks you guys. I will check into this next week. Nikko, your photos are great. 40 pitch!!!! I'd figure a 15 or better pitch might get it there at 9 to 10 K like Ralph once stated. The AT6 prop is for an 80cc. At this point I'd like to get some hands on usage suggestions from someone that has done it with a 50cc. Piping the engine is no problem either. My idea is a like a very large hot liner.

Joe