I've got a 100 saito single on mine, and yeah, you could say it's enough power... sorta like a 20 foot roll, pull to vertical, stop climbing when you can't see it anymore. If you find you do need some extra weight in the tail with a twin (which would make it a VERY cool hog bipe), put it into lumber by making the rudder and elevator a bit larger. They're ok as is, but like they say.. too much of anything is just enough.