Modular RC Airplane

This design provides the components to construct a modular RC airplane. The components are slid onto an 8mm carbon fiber backbone. The wing sections and ailerons are slid onto three 4mm carbon fiber rods. Except for wing end caps, no glue is used, instead everything is fastened using M2.5 and M3 bolts and screws. This allows you to easily do things like adjust wing size and slide components on the backbone rod to adjust the center of gravity.

I used PLA+ for printing, where it provides a better strength to weight ratio than lightweight PLA. The tires for the landing gear were printed using TPU. The total weight of the plane shown in the picture with all components, motor, servos and battery is 644 grams.

My implementation uses the popular 2.4GHz Express LRS (ELRS) for radio controls. This involves a 4 channel receiver, three servos and an electronic speed controller (ESC) , as well as an ELRS transmitter. I have chosen these components from Radiomaster.

The (non-printed) parts list