Peggy, I'm not sure if anyone answered the second question in your post...I'm really not sure about the 100, but I have an early BME 102 in an Aeroworks SU-31 at 27lbs. With a 26X10 Beila prop it has unlimited vertical. If you are talking about the Composite ARF YAK2.6 it is advertised at 26-27lbs. If it were me, however, I would opt for the ZDZ 100NG, the BME 110 Extreme,The DA 100 or the 3W106. I hope this helps.