By Cults on December 9, 2019 11:17
I designed this motor mount to fit in a bodied foam board rc plane with a 2.5" inner dimension. It attaches by sliding over a 3/16" foam board horizontal, and in between the side pieces. I've found it to be fairly durable, withstanding many nose down "landings". For best results print the mounting face down, as pictured. I recommend drilling the mounting holes to your tap drill size, I use M3 screws. Note: Download has additional fillets not shown in pictures.
3D file format: STL