i have had my brison 3.2 on 17 lbs plane and it will hover with ease so i can tell you that DA 50 is stronger than any of the 50CC i know off Brison site claims unlimted verticle on a Brison 3.2 up to 18 lbs. So the DA 50 should still be cool it just wow that the plane looks to be very heavy like the DP extra started off saying....