Its held in position with some teeth at the front and a couple of L shape nylon turn buckles at the back made from bolts that have a tab on top, I put a piece of 6mm ply behind the fg and then put star nuts in them to take the bolt, last job I managed to get the the on off switch for the flight pack in there---a tight fit
I have had good service from those motors that's what I use in this size plane
Mike
