Flew my new Mini-BobCat today. All I can say is Wow! It uses the WeMoTec Mini fan with a Astro 805 power system on 10 cells (Sanyo 4/5 AUP 1700 ma cells). This plane is quick. With the above batteries I'm using 250 Watts which produces 31,000 RPM. Flying weight is 39 oz. I'll be doing more test flights next Sat. Keep you posted.