My OS 120 is mounted on a Dubro vibration mount. I have 2 digitals on the elevators and everything else are HT JR coreless and I get 10 - 10 min. flights on a 1100 - 4 cell battery and still have 400 - 500 mah left when I cycle at home.

Pappy35 - don't be so hard on the OS 120FS. I have a number of Saito's and YS's also and yes the YS's are more powerful but my OS 120 is flat out the most realiable, best working engine I have used in well over 20 years of doing this foolishness. The Saito's, that's another story. The only real good one I've had is a 25 year old 270 twin.