If your training geta cheap 40-46 2 stroke! I ran my first lt-40 with a magnum .40. I learned on it, but when I went float flying, my reciever shorted out, and it ran straight into the bank. My magnum 40 ended up in 4 pieces!!! Moral of the story, engines do break!!!

On my next lt 40 I ran a saito 56. That is the perfect combo if your not gonna crash it, or if your rich!

I now have an lt 40 with a saito .72. It's a trainer AND it hovers. how fun!!! Had to reduce the atv's on the radio to teach my g/f to fly.