take a look at my other designs https://www.thingiverse.com/mg_evolution/designs
This is my v2 wing mounted motor, allowing the motor to point upwards on a flat wing.
I have made this adjustable by changing the font cone section using 2 x 3mm screws.
There is 0, 3, 5, 7 deg mount
The front cone is slightly longer than the original and has a locating tag to give it twisting strength.
The files should be ready to print flat on the bed.
Layer height 0.2 with 100% infill.
I have not test this as yet 01/01/2019
Original design FT sparrow (universal) dual motor wing mount
I made this for the FliteTest Sparrow but this can be made to fit any wing with a flat bottom profile.
This should take a 1104 motor as it is.
2mm thread with 9mm between the thread centers 1104
2mm thread with 12mm between the thread centers 1806
The motors sit forward of the COG which i believe is 1.75" back from the wing front.
I designed the motor mounts to be hot glued in using a slot 5mm x 15mm. The cables are then run through the wing body to the center where they come out at the rear of the servos.
I am open to any questions or changes / ideas you have