In the newest tower talk that I have they show the 3001 as having only 33.3 oz.in with 4.8 battery and 41.6 oz.in with 6.0 battery. If theses numbers are right they aren't enough for an fun fly plane. I run 6 volt packs in most of my funfly stuff. Have 1 magic with 148's servos and 4 cell battery and if it has much speed it doesn't preform well until it bleeds off some speed. It is stalling out the servos.