Here you can download free plans for a foam rc plane.
Homemade RC Airplane VTOL
Build Super Simple Flying Wing
how to make rc landing gear
Mounting RC Aeroplane Engine - RC Model Aeroplane Build & Repair
How to Make Remote Control Helicopter Drone.
How to make a Aeroplane - Big RC Airplane
Big Rc Plane Mig 21 Flight Test
IT’S a BEAST! - ZLRC BEAST SG906 4K DRONE - REVIEW & FLIGHTS
Online calc of the CG of an RC airplane