Will hover at a little over half throttle with a webra 50,mounted my battery behind the wing in the fuselage.Friend uses a TT 46 and has plenty of power to hover also.TT makes a premium engine for the price and they are very durable and not as finicky to adjust like my webra.This plane is designed with a 2 cycle in mind and the lighter it is the slower it will go,and it will fly slooow.