Hey Brian, sorry for the delay, I was staining some cherry. The hinges are Dubro brand, there are a few sizes and I'm going to guess medium. Don't know if they actually spec them for the size of the plane. They might. If I remember correctly, they seemed to be about the width of the CA hinges, as they fit the slot nicely. I'll see what I can dig up. My battery is a 5 cell, in a hatch, half way down the fuze. Maybe thats why its tail heavy and no one else likes to fly it! Joe